Variable flow resistance system with circulation inducing structure therein to variably resist flow in a subterranean well.
Abstract
Un dispositivo de control de flujo puede incluir una superficie que defina una cámara e incluye superficies de perímetro lateral y superficies de extremo opuestas, una mayor distancia entre las superficies de extremo opuestas es más pequeña que una dimensión más grande de las superficies de extremo opuestas, un primer puerto a través de una de las superficies de extremo, y un segundo puerto a través de la superficie y separado del primer puerto, la superficie de perímetro lateral opera para dirigir el flujo desde el segundo puerto para rotar alrededor del primer puerto; otro dispositivo puede incluir una cámara cilindroide para recibir flujo a través de una entrada y dirigir el flujo a una salida, una mayor dimensión axial de la cámara cilindroide es más pequeña que una mayor dimensión diametral de la cámara cilindroide, la cámara cilindroide promueve la rotación del flujo con base en una característica del flujo de entrada a través de la entrada; el dispositivo puede tener una estructura de trayectoria de flujo en la cámara cilindroide.

Term
6.3 yearsleft in the term
Expires 16 January 2033.
- Priority
- Filed
- Granted
- Today
- Expires
22 claims: 4 independent, 18 dependent
- 1NOVEDAD DE LA INVENCION Habiendo descrito el presente invento, se considera como una novedad y, por lo tanto, se reclama como prioridad lo contenido en las siguientes:REIVINDICACIONES 1. Un dispositivo de control de flujo para su instalación en un sondeo subterráneo, el dispositivo de control de flujo caracterizado porque comprende: una cámara, una superficie interior de la cámara que incluye una superficie de perímetro lateral y primera y segunda superficies de extremo opuestas, una mayor distancia entre las superficies de extremo opuestas siendo menor que una dimensión diametral más grande de la primera y segunda superficies de extremo opuestas;al menos una entrada localizada en la superficie de perímetro lateral, en donde un fluido de pozo entra en la cámara mediante la por lo menos una entrada;una salida localizada en una de las superficies de extremo, en donde todo el fluido de pozo que entra a la cámara mediante la entrada también sale de la cámara mediante la salida;y una estructura de trayectoria de flujo que se extiende desde por lo menos una de la primera y segunda ..··· *'»» a ·”· superficies de extremo opuestas, en donde la estructura de trayectoria de flujo permite que el fluido de pozo fluya radialmente hacia la salida. 5
- 2El dispositivo de control de flujo de conformidad con la reivindicación 1, caracterizado porque la estructura de trayectoria de flujo induce el fluido de pozo al flujo circular sobre la salida.
- 3El dispositivo de control de flujo de 10 conformidad con la reivindicación 1, caracterizado porque la estructura de trayectoria de flujo comprende una pared que se extiende desde por lo menos una de la primera y segunda superficies de extremo opuestas.
- 4El dispositivo de control de flujo de 15 conformidad con la reivindicación 3, caracterizado porque la pared se extiende desde la primera superficie de extremo opuesta a la segunda superficie de extremo opuesta. * conformidad con la reivindicación 3, caracterTí£atte*'qgo-rq»e“‘l^-~«-M» estructura de trayectoria de flujo comprende una primera pared que se extiende desde la primera superficie de extremo opuesta, y la estructura de trayectoria de flujo comprende
- 55 una segunda pared que se extiende desde la segunda superficie de extremo opuesta.
- 67. El dispositivo de control de flujo de conformidad con la reivindicación 1, caracterizado porque la estructura de trayectoria de flujo comprende al menos uno de 10 filamentos, cerdas o alambres que se extienden desde por lo menos una de la primera y segunda superficies de extremo opuestas.
- 78. El dispositivo de control de flujo de conformidad con la reivindicación 1, caracterizado porque la 15 estructura de trayectoria de flujo comprende cavidades en al menos una de la primera y segunda superficies de extremo opuestas.
- 89. El dispositivo de control de flujo de conformidad con ia reivindicación 1, caracterizado porque la 20 estructura de trayectoria de flujo comprende ondulaciones en al menos una de la primera y segunda superficies de extremo opuestas.
- 910. El dispositivo de control de flujo de conformidad con la reivindicación 1, caracterizado porque la ι. iNsrrTi·' di; :.ό Τ estructura de trayectoria de flujo comprende una hélice.
- 1011. Un dispositivo de control de flujo para su instalación en un sondeo subterráneo, el dispositivo de control de flujo caracterizado porque comprende:una cámara cilindroide, que incluye al menos una entrada y sólo una salida, una mayor dimensión axial de la cámara cilindroide es menor que una dimensión diametral mayor de la cámara cilindroide, en donde un fluido de pozo entra en la cámara cilindroide mediante la por lo menos una entrada y sale de la cámara cilindroide mediante la salida , y en donde una resistencia ai flujo del fluido de pozo a través de la cámara cilindroide varia en respuesta a un cambio en una característica del fluido de pozo;y una estructura de trayectoria de flujo colocada dentro de la cámara cilindroide, en donde la estructura de trayectoria de flujo resiste a un cambio en una dirección por la cual el fluido de pozo fluye desde la por lo menos una entrada a la salida. característica comprende una viscosidad del fluido de pozo. Α-ΜΒ3
- 1114. El dispositivo de control de flujo de conformidad con la reivindicación 11, caracterizado porque la característica comprende una velocidad del fluido de pozo.
- 1215. El dispositivo de control de flujo de conformidad con la reivindicación 11, caracterizado porque la resistencia al flujo del fluido de pozo a través de la cámara cilindroide aumenta cuando el fluido de pozo fluye más circularmente sobre la salida.
- 1316. El dispositivo de control de flujo de conformidad con la reivindicación 11, caracterizado porque la resistencia al flujo del fluido de pozo a través de la cámara cilindroide disminuye cuando el fluido de pozo fluye más radialmente hacia la salida.
- 1417. El dispositivo de control de flujo de conformidad con la reivindicación 11, caracterizado porque un mayor eje y un menor eje de la cámara cilindroide tienen substancialmente una misma dimensión.
- 1518. El dispositivo de control de flujo de conformidad con la reivindicación 11, caracterizado porque la cámara cilindroide incluye una superficie de perímetro lateral y superficies de extremo opuestas, y la superficie de perímetro lateral es perpendicular a ambas de las superficies de extremo opuestas.
- 1619. Un método para controlar el flujo en un sondeo IMPI subterráneo, caracterizado porque comprende:recibir un fluido de pozo dentro de una cámara cilindroide de un dispositivo de control de flujo en el sondeo, la cámara cilindroide, incluye al menos una entrada 5 por la cual el fluido de pozo entra en la cámara cilindroide, la cámara cilindroide incluye sólo una sola salida mediante la cual el fluido de pozo sale de la cámara cilindroide, una mayor dimensión axial de la cámara cilindroide es menor que una dimensión diametral mayor de la cámara cilindroide;10 el fluido de pozo se pone en contacto con una estructura de trayectoria de flujo, resistiéndose de tal modo a un cambio en una dirección por la cual el fluido de pozo fluye desde la por lo menos una entrada a la salida;y una resistencia al flujo del fluido de pozo a 15 través de la cámara cilindroide varía en respuesta a un cambio en una característica del fluido de pozo.
- 1720. El método de conformidad con la reivindicación 19, caracterizado porque la característica comprende una viscosidad del fluido de pozo. 20
- 1821. El método de conformidad con la reivindicación 19, caracterizado porque la característica comprende una velocidad del fluido de pozo.
- 1922. El método de conformidad con la reivindicación 19, caracterizado porque la característica comprende una Λ W . ϊ τι η τ densidad del fluido de pozo.
- 2023. El método de conformidad con la reivindicación 19, caracterizado porque la resistencia ai flujo del fluido de pozo a través de la cámara cilindroide aumenta cuando el fluido de pozo fluye más circularmente sobre la salida.
- 2124. El método de conformidad con la reivindicación 19, caracterizado porque la resistencia al flujo del fluido de pozo a través de la cámara cilindroide disminuye cuando el fluido de pozo fluye más radialmente hacia la salida.
- 2225. El método de conformidad con la reivindicación 19, caracterizado porque la cámara cilindroide incluye una superficie de perímetro lateral y se opone a las superficies finales, y la superficie de perímetro lateral es perpendicular a ambas de las superficies de extremo opuestas. •4
Independent claims22
400 paragraphs in 26 sections, as filed
(54) Title: VARIABLE FLOW RESISTANCE SYSTEM WITH CIRCULATION INDUCTION STRUCTURE IN THE SAME TO VARIABLY RESIST THE FLOW IN AN UNDERGROUND WELL.
(54) Title: VARIABLE FLOW RESISTANCE SYSTEM WITH CIRCULATION INDUCING STRUCTURE THEREIN TO VARIABLY RESIST FLOW IN A SUBTERRANEAN WELL.
(57) Summary
A flow control device may include a chamber defining surface and includes side perimeter surfaces and opposite end surfaces, a greater distance between the opposite end surfaces is smaller than a larger dimension of the opposite end surfaces, a first port through one of the end surfaces, and a second port through the surface and separated from the first port, the lateral perimeter surface operates to direct the flow from the second port to rotate around the first port; Another device may include a cylindroid chamber to receive flow through an inlet and direct the flow to an outlet, a larger axial dimension of the cylindroid chamber is smaller than a larger diametrical dimension of the cylindroid chamber, the cylindroid chamber promotes rotation. flow based on a characteristic of the inlet flow through the inlet; The device may have a flow path structure in the cylindroid chamber.
(57) Abstract
A flow control device can inelude a surface that defines a chamber and ineludes a side perimeter and opposing end surfaces, a greatest distance between the opposing end surfaces being smaller than a largest dimension of the opposing end surfaces, a first port through one of the end surfaces, and a second port through the surface and apart from the first port, the side perimeter surface being operable to direct flow from the second port to rotate about the first port. Another device can inelude a cylindroidal chamber for receiving flow through an inlet and directing the flow to an outlet, a greatest axial dimension of the cylindroidal chamber being smaller than a greatest diametric dimension of the cylindroidal chamber, the cylindroidal chamber promoting rotation of the flow based on a characteristic of the inflow through the inlet. The device can have a flow path structure in the cylindroidal chamber.
Institute
Mexican Property
Industrial
SECONDARY M tCWiOMlA
<img file="MX337033B_D0001.tif" />
patent title NO. 337033
Owner (s): HALLIBURTON ENERGY SERVICES, INC.
Address: 10200 Bellaire Boulevard, Houston, Texas, 77072, USA
Name: VARIABLE FLOW RESISTANCE SYSTEM WITH CIRCULATION INDUCTION STRUCTURE IN THE SAME TO VARIABLY RESIST THE FLOW IN AN UNDERGROUND WELL.
Classification:
Invi lnt.CI.8: E21B34 / 06
<img file="MX337033B_D0002.tif" />
Justrial.
<sup>r</sup>unquestionable facts, • bis 2 of the law of the
12/26/1997, 1W) 5/1999, 12); Articles 1, 3 '«action V (DOF 14/12/1999, refOmed on __ ictions I and III and 30 of the Christian Statute> / 2002. 07/29/2004, 08/04/2004 and 09/13/2 < W); 1st, 3rd _______________ ps of the
Regional, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Mexican Institute of Industrial Property. (DOF 12/15/1999, amended Yes 04/02/2000, 07/29/2004, 08/04/2004 and 09/13/2007).
<img file="MX337033B_D0003.tif" />
Issue Date: February 8, 2016
DIVISIONAL DIRECTOR OF PATENTS
<img file="MX337033B_D0004.tif" />
NAHANNY CANAL REYES
<img file="MX337033B_D0005.tif" />
<img file="MX337033B_D0006.tif" />
Arenal No 550, Floor 1,
Col. Pueblo Santa María Tepepan,
Xocbimilco Delegation,
CP 16020, Mexico City
Tel. (55) 53 34 07 00 www.impi.qob.mx
MX / 2016 / 115O4
<img file="MX337033B_D0007.tif" />
SYSTEM. VARIABLE FLOW RESISTANCE CO
33W
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OF
INDUCTION OF CIRCULATION IN THE SAME FOR M ^ NERA. ^
VARIABLE FLOW IN AN UNDERGROUND WELL
BACKGROUND OF THE INVENTION
This disclosure generally relates to equipment used and operations performed in conjunction with an underground well and, in an example described below, more particularly allows variable resistance to flow in an underground well.
In a hydrocarbon production well, it is often beneficial to be able to regulate the flow of fluids from a land formation in a borehole. Such provision can serve a variety of purposes, including preventing water or gas cone, minimizing the production of sand, minimizing the production of water and gas, maximizing the production of oil and gas, the balance of production between zones, etc.
In an injection well, it is typically desirable to uniformly inject water, steam, gas, etc., into multiple zones, so that hydrocarbons are displaced evenly through a land formation, without injected fluid go prematurely to
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DE LA P aop¡ SD <·. Or you see «« A * INDUSTRIAL »« fc-jS .-- a survey. Therefore, the ability to regulate the flow of fluids from a borehole in a land formation can also be beneficial for injection wells.
Therefore, it will be appreciated that advances in the technique of variably restricting fluid flow in a well would be desirable in the aforementioned circumstances, and such advances would also be beneficial in a wide variety of other circumstances.
SUMMARY OF THE INVENTION
A variable flow resistance system is provided in the following disclosure which provides improvements to the technique of regulating fluid flow in a well. An example is described below in which the flow of a fluid composition resisted more if the fluid composition had a threshold level of an undesirable characteristic. Another example is also described below in which a resistance to flow through the system increases as a ratio of desired fluid to unwanted fluid in the fluid composition decreases.
In one aspect, this disclosure provides the art with a variable flow resistance system for use in an underground well. The system may include a camera
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Flow TTi through which a fluid composition flows. The chamber has at least one inlet, one outlet, and at least one structure which prevents a change from the circular flow of the fluid composition around the outlet to the radial flow to the outlet.
In another aspect, a variable flow resistance system for use in an underground well may include a flow chamber through which a fluid composition flows. The chamber has at least one inlet, one outlet, and at least one structure which prevents the circular flow of the fluid composition around the outlet.
In yet another aspect, a variable flow resistance system is provided for use in an underground well. The system may include a flow chamber through which a fluid composition flows into the well, the chamber having at least one inlet, one outlet, and at least one structure that prevents a change in the circular flow of the fluid composition around from outlet to radial flow to outlet.
In another aspect, a variable flow resistance system described below may include a flow chamber with an outlet and at least one structure that resists a change in a flow direction of a fluid composition toward the outlet. Fluid composition enters the chamber
MEXICAN INSTITUTE of industrial atrophy flow that changes base. on one.
desired to unwanted fluid in the in a fluid composition fluid ratio direction.
In yet another aspect, this disclosure provides a variable flow resistance system that may include a flow path selection device that selects through which of the multiple flow paths most fluid flows from the device, based on in a ratio of desired fluid to unwanted fluid in a fluid composition. The system also includes a flow chamber having an outlet, a first inlet connected to a first of the flow paths, a second inlet connected to a second of the flow paths, and at least one structure that prevents radial flow of fluid composition from the second inlet to the outlet rather than preventing radial flow of the fluid composition from the first inlet to the outlet.
In one example, a flow control device for installation in an underground borehole may include an interior surface that defines an interior chamber, the interior surface may include a lateral perimeter surface and opposite end surfaces, a greater distance between the surfaces of opposite ends is smaller than a larger dimension of the surfaces of ί
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Opposite end, a first port through one of the end surfaces, and a second port through the inner surface and separated from the first port, the lateral perimeter surface operates to direct flow from the second port to rotate around the first port, and may also include a flow path structure in the inner chamber.
In another example, a flow control device for installation in an underground borehole may include a cylindroid chamber to receive flow through a chamber inlet and direct the flow to a chamber outlet, a larger axial dimension of the cylindroid chamber is smaller than a larger diameter of the cylindroid chamber, the cylindroid chamber promotes a rotation of the flow around the chamber outlet and a degree of rotation is based on a characteristic of the inlet flow through the chamber inlet, and may further include a flow path structure in the cylindroid chamber.
A method of controlling flow in an underground borehole may include receiving flow into a cylindrical chamber from a flow control device in a borehole, the cylindroid chamber comprises at least one chamber inlet, a larger axial dimension of the cylindroid chamber is Smaller than a larger diametric dimension of the chamber
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<img file="MX337033B_D0010.tif" />
cylindroid direct the flow through a flow path structure within the cylindroid chamber; and promoting a rotation of the flow through the cylindroid chamber around a chamber outlet, where a degree of rotation is based on an inlet flow characteristic through the chamber inlet.
These and other features, advantages and benefits will be apparent to those skilled in the art upon careful consideration of the detailed description of the representative examples below and the accompanying drawings, in which similar elements are indicated in various figures using the same reference numbers.
BRIEF DESCRIPTION OF THE FIGURES
Fig. 1 is a partially cross-sectional schematic view of a well system that may incorporate principles of the present disclosure.
Fig. 2 is an enlarged scale cross-sectional schematic view 20 of a well filter and a variable flow resistance system that can be used in the well system of Fig. 1.
Figure 3 is an unrolled schematic plan view of a configuration of the
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Figures 4A and 4B are schematic plan views of another configuration of a flow chamber of the variable flow resistance system.
Figure 5 is a schematic plan view of yet another configuration of the flow chamber.
Figures 6A and 6B are schematic plan views of yet another configuration of the variable flow resistance system.
Figures 7A-H are schematic cross-sectional views of various flow chamber configurations, with Figures 7A-G being taken along line 7-7 of Figure 4B, and Figure 7H being taken along along line 7H-7H in Figure 7G.
Figures 71 and 7J are schematic perspective views of structure configurations that can be used in the flow chamber of the variable flow resistance system.
Figures 8A-11 are schematic plan views of additional flow chamber configurations.
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DETAILED DESCRIPTION OF THE INVENTION.
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Representatively illustrated in Figure 1 is a well system 10 that can incorporate the principles of this disclosure. As shown in Fig. 1, a bore 12 has a generally vertical unpiped section 14 extending downward from the casing 16, as well as a generally horizontal tubed section 18 extending through a land formation 20.
A tubular chain 22 (such as a production pipe chain) is installed in bore 12.
Interconnected in the tubular chain 22 are multiple well filters 24, variable flow resistance systems 25, and plugs 26.
The plugs 26 seal a crown 28 formed radially between the tubular chain 22 and the drilling section
18. In this way, fluids 30 can be produced from multiple intervals or zones of formation 20 through isolated portions of crown 28 between adjacent pairs of plugs 26.
Placed between each adjacent pair of plugs 26, a well filter 24 and a variable flow resistance system 25 are interconnected in the tubular chain 22. The well filter 24 filters fluids 30 that flow into the tubular chain 22 from the crown 28. The ü; ' resistance system of variably the flow of tubular chain 22, based on fluids.
Variable flow 2.5 restricts of the fluids 30 within the in certain characteristics of the
At this point, it should be noted that well system 10 is illustrated in the drawings and described herein as merely an example of a wide variety of well systems where the principles of this disclosure can be used. It should be clearly understood that the principles of this disclosure are by no means limited to any of the details of well system 10, or components thereof, shown in the drawings or described herein.
For example, it is not necessary in adhering to the principles of this disclosure that the bore 122 include a generally vertical bore section 14 or a generally horizontal bore section 18. Fluids 30 need not be produced only from the formation 20 because, in other examples, fluids could be injected into a formation, fluids could be both injected into and produced from a formation, etc.
Each of the well filter 24 and the variable flow resistance system 25 need not be • CTS ,,
<img file="MX337033B_D0011.tif" />
'4 placed between each adjacent pair of plugs 26. It is not necessary that a single variable flow resistance system 25 be used in conjunction with a single well filter 24. Any number, arrangement and combination of these components can be used.
It is not necessary that some variable flow resistance system 25 be used with a well filter 24. For example, in injection operations, the injected fluid could be made to flow through a variable flow resistance system 25, without also flow through a well filter 24.
Well filters 24, variable flow resistance systems 25, plugs 26 or any other components of tubular chain 22 need not be placed in unpiped sections 14, 18 of the borehole
12. Any section of the bore 12 may be piped or non-piped, and any portion of the tubular chain 22 may be placed in a non-piped or cased section of the bore, adhering to the principles of this disclosure.
However, it should clearly be understood that this disclosure describes how to make and use some examples, but the principles of disclosure are not limited to any of the details in those examples. Rather, those principles can be applied to a __.... JS.
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variety of other examples using ^ the c ^^ ffí'taien'to 'obtained from this disclosure. ~
Those skilled in the art will appreciate that it would be beneficial to be able to regulate the flow of fluids 30 within tubular chain 22 from each zone of formation 20, for example, to avoid water cone 32 or gas cone 34 in the formation. Other uses for flow regulation in a well include, but are not limited to, balancing the production of (or injection within) multiple zones, minimizing production or injection of unwanted fluids, maximizing production or injection of desired fluids , etc.
Examples of the variable flow resistance systems 25 described in greater detail below can provide these benefits by increasing flow resistance in the event that a fluid velocity increases beyond a selected level (for example, to balance flow between zones, avoid the cone of water or gas, etc.), increase the resistance to flow in the event that a viscosity 20 or fluid density falls below a selected level (for example, in order to restrict the flow of an unwanted fluid, such as water or gas, into an oil production well), and increase the resistance to flow in the event that a viscosity or density of fluid increases above a selected level (by _______
<img file="MX337033B_D0012.tif" />
<td>reduce</td><td>to the</td><td>minimum the</td><td>water injection into</td><td>a well</td><td>of</td>
<td>injection</td><td>of</td><td>steam ).</td><td></td><td></td><td></td>
<td></td><td>Yes</td><td>a fluid</td><td>is a desired fluid</td><td colspan="2">or unwanted</td>
<td>It depends</td><td>of the</td><td>purpose</td><td>of the operation of</td><td>production</td><td>or</td>
injection being performed. For example, if you want to produce oil from a well, but you don't want to produce water or gas, then oil is a desired fluid, and water and gas are unwanted fluids. If you want to produce gas from a well, but you don't want to produce water or oil, gas is a desired fluid, and oil and water are unwanted fluids. If you want to inject steam into a formation, but you don't want to inject water, then steam is a desired fluid and water is an unwanted fluid.
Note that, at downhole temperatures and pressures, the hydrocarbon gas may actually be completely or partially in the liquid phase. Therefore, it should be understood that when the term gas is used herein, supercritical, liquid, and gaseous phases are included within the scope of that term.
<td>Doing</td><td>reference additionally</td><td>now</td><td>to</td><td>the</td>
<td>figure 2 so</td><td>representative illustrated</td><td colspan="2">a sight</td><td>in</td>
<td>cross section</td><td>of enlarged scale of</td><td>one</td><td>of</td><td>the</td>
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variable flow resistance systems 25 and a portion of one of the well filters 24. In this example, a fluid composition 36 (which may include one or more
<td>fluids,</td><td>such as</td><td>Petroleum</td><td>and water,</td><td>liquid water and steam,</td>
<td>5 oil</td><td>and gas, gas</td><td>and water,</td><td>Petroleum,</td><td>water and gas etc.) flows</td>
<td>to him</td><td>filter</td><td>well 24,</td><td>so</td><td>is filtered, and then</td>
flows into an inlet 38 of the variable flow resistance system 25.
A fluid composition can include one or more unwanted or desired fluids. Both steam and water can be combined into a fluid composition. As another example, oil, water, and gas can be combined in a fluid composition.
The flow of the fluid composition 36 through the variable flow resistance system 25 is resisted based on one or more characteristics (such as density, viscosity, speed, etc.) of the fluid composition. Fluid composition 36 is then discharged from variable flow resistance system 25 into an interior of tubular chain 22 through an outlet 40.
In other examples, well filter 24 may not be used in conjunction with variable flow resistance system 25 (eg, in injection operations), fluid composition 36 could flow in one direction.
INSTITUTO MKUCANQ Dí LA i'nVr'UMAl?
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<img file="MX337033B_D0014.tif" />
Opposite across the various elements of well system 10 (eg, in injection operations), a single variable flow resistance system could be used in conjunction with multiple well filters, multiple flow resistance systems could be used Variable with one or more well filters, fluid composition could be received from or discharged to different well regions
<td>to an o ring</td><td>a chain</td><td>tubular, the</td><td>composition</td><td>of</td><td>fluid</td>
<td>could flow to</td><td>through the</td><td>system of</td><td>resistance</td><td>of</td><td>flow</td>
<td>variable before</td><td>to flow</td><td>through</td><td>filter</td><td>of</td><td>water well,</td>
any other components could be interconnected upstream or downstream of the well filter and variable flow resistance system, etc. Therefore, it will be appreciated that the principles of this disclosure are by no means limited to the details of the example shown in FIG. 2 and described herein.
Although the well filter 24 shown in Figure 2 is of the type known to those skilled in the art as a wire wound well filter, in other 20 examples any other types or combinations of well filters (such as sintering) may be used. , expanded, prepackaged, wire mesh, etc.). If desired, additional components may also be used (such as fairings, vents, pipes, '? Γ
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pipes, instrumentation, sensors, inlet flow control devices, etc.).
Variable flow resistance system 25 is shown in simplified form in Figure 2, but in a preferred example, the system may include various passages and devices to perform various functions, as described in greater detail below. Furthermore, system 25 preferably extends at least partially circumferentially around tubular chain 22, or the system can be formed into a wall of an interconnected tubular structure as part of the tubular chain.
In other examples, the system 25 may not extend circumferentially around a tubular chain or be formed on a wall of a tubular structure. For example, system 25 could be formed into a flat structure, etc. System 25 could be in a separate housing that is attached to tubular chain 22, or it could be oriented so that the axis of outlet 40 is parallel to the axis of the tubular chain. System 25 could be on a perforation log chain or attached to a non-tubular shaped device. Any guidance or configuration of system 25 may be used in accordance with the principles of this disclosure.
<img file="MX337033B_D0016.tif" />
Now additionally referencing the ...___ ~
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Figure 3, representatively a view in
<td>section</td><td>more detailed cross</td><td>of</td><td>a</td><td>example of</td><td>system</td>
<td>25. The</td><td>system 25 shown</td><td>in</td><td>the</td><td>figure 3</td><td>like</td>
<td colspan="2">5 was unwound from</td><td>its</td><td colspan="2">setting</td><td>That</td>
<td>extends</td><td>circumferentially</td><td>to</td><td></td><td colspan="2">a configuration</td>
generally flat.
As described above, fluid composition 36 enters system 25 through inlet 38, and exits the system through outlet 40.
A resistance to flow of the fluid composition 36 through system 25 varies based on one or more characteristics of the fluid composition. The system 25 shown in Figure 3 is similar in most respects to that illustrated in Figure 23 of the previous application with serial number 12/700685 incorporated herein by reference above.
In the example of Figure 3, fluid composition 36 initially flows into multiple flow passages 42, 44, 46, 48. Flow passages 42, 44, 46, 48 direct fluid composition 36 to two selection devices of flow path 50, 52. Device 50 selects which of the two flow paths 54, 56 will enter the majority of flow from passages 44, 46, 48, and
T> Tí τ η s'í / íi V * the other device 52 selects which of the two flow paths 58, 60 will enter the majority of the flow from passages 42, 44, 46, 48.
Flow passage 44 is configured to be more restrictive to the flow of fluids having a higher viscosity. The flow of fluids of increased viscosity will be increasingly restricted through flow passage 44.
As used herein, the term viscosity is used to indicate any of the related rheological properties including kinematic viscosity, production intensity, viscoplasticity, surface tension, wettability, etc.
For example, flow passage 44 may have a relatively small flow area, the flow passage may require that the fluid flowing through it follow a tortuous path, rough or flow-preventing surface structures may be used to provide increased resistance to the flow of higher viscosity fluid, etc. However, relatively low viscosity fluid can flow through flow passage 44 with relatively low resistance to such flow, j
A control passage 64 of the
<img file="MX337033B_D0017.tif" />
Flow path selection 50 receives fluid flowing through flow passage 44. A control port at one end of control passage 64 has a reduced flow area to thereby increase a velocity of the fluid leaving the control passage. .
Flow passage 48 is configured to have a flow resistance that is relatively insensitive to the viscosity of fluids flowing through it, but can be increasingly resistant to the flow of fluids of higher velocity and density. The flow of fluids of increased viscosity can be increasingly resisted through flow path 18, but not to the degree to which the flow of such fluids would be resisted through flow passage 44.
In the example shown in FIG. 3, the fluid flowing through the flow passage 48 must flow through a vortex chamber 62 before being discharged into a control passage 68 of the flow path selection device 50. Because chamber 62 in this example is cylindrical in shape with a central outlet, and fluid composition 36 spirals around the chamber, increasing speed as it approaches the outlet, driven by a pressure differential from the entrance to the exit, the
<img file="MX337033B_D0018.tif" />
<img file="MX337033B_D0019.tif" />
chamber is referred to as an exemplary chamber one or more orifices, Venturi tubes, nozzles etc. may be used.
Control passage 68 terminates at control port 70. Control port 70 has a reduced flow area, in order to increase the rate of flow out of control passage 68.
It will be appreciated that, as a viscosity of fluid composition 36 increases, a greater proportion of the fluid composition will flow through flow passage 48, control passage 68, and control port 70 (because the flow passage 44 resists the flow of fluid of higher viscosity than flow passage 48 and vortex chamber 62), and as a viscosity of the fluid composition decreases, a greater proportion of the fluid composition will flow through flow passage 44, control passage 64, and control port 66.
Fluid flowing through the flow passage
46 it also flows through a vortex chamber 72, which may be similar to vortex chamber 62 (although vortex chamber 72 in a preferred example provides less resistance to flow through it than vortex chamber 62) , and unloads in a central passage
<img file="MX337033B_D0020.tif" />
74. Vortex chamber 72 is used for 'pairing of »» τί ·; Λ .-: Λ · βΑ · ι · Λ impedance to achieve a desired balance of flows through flow passages 44, 46, 48.
Note that it will be necessary to appropriately select dimensions and other characteristics of the various components of system 25, so that desired results are achieved. In the example of FIG. 3, a desired result of the flow path selection device 50 is that the flow of most of the fluid composition 36 flowing through the flow passages 44, 46, 48 is directed toward flow path 54 when the fluid composition has a sufficiently high ratio of desired fluid to unwanted fluid therein.
In this case, the desired fluid is petroleum, which has a higher viscosity than water or gas, and thus when a sufficiently high proportion of the fluid composition 36 is petroleum, most of the fluid composition 36 which entering flow path selection device 50 will be directed to flow within flow path 54, rather than within flow path 56. This result is achieved due to fluid leaving control port 70 at a higher rate or at a higher rate than the fluid.
<img file="MX337033B_D0021.tif" />
leaving the other control port 66, thereby influencing the fluid flowing from passages 64, 68, 74 to flow further into flow path 54.
If the viscosity of fluid composition 36 is not high enough (and therefore a ratio of desired fluid to unwanted fluid is below a selected level), most of the fluid composition entering the selection device of flow path 50 will be directed to flow towards flow path 56, rather than towards flow path
54. This will be due to the fluid leaving the control port at a higher rate or at a higher speed than the fluid leaving the other control port 70, thus influencing the fluid flowing from passages 64,
68, 74 to flow further into flow path 56.
It will be appreciated that, by appropriately configuring flow passages 44, 46, 48, control passages 64, 68,
<td>the</td><td>ports</td><td>of control</td><td> 66,</td><td>70, the cameras</td><td>vortex</td><td> 62,</td>
<td> 72,</td><td>etc., the</td><td>proportion</td><td>of</td><td>desired fluid to</td><td>unwanted in</td><td>the</td>
<td colspan="2">20 composition</td><td>fluid</td><td> 36</td><td>to which the</td><td>device</td><td> 50</td>
select either flow passage 54 or 56 to flow most of the flow from the device can be set to several different levels.
Flow paths 54, 56 direct fluid
<img file="MX337033B_D0022.tif" />
AO
TO THE
<img file="MX337033B_D0023.tif" />
to respective control passages Χί, 78 flow path selection device 52. Control passages 76, 78 terminate at respective control ports 80, 82. A central passage 75 receives fluid from flow passage 42.
Flow path selection device 52 operates similar to flow path selection device 50, in that fluid flowing to device 52 through passages 75, 76, 78 is directed toward one of the flow paths 58, 600, and the selection of the flow path depends on a proportion of fluid discharged from the control ports
80, 82. If the fluid flows through the control port · at a higher rate or speed compared to the fluid flowing through the control port 82, then most of the fluid composition 36 will be directed to flow to through flow path 60.
If the fluid flows through the control port 82 at a higher rate or speed compared to the fluid flowing through the control port 80, then most of the fluid composition 36 will be directed to flow through the path flow 58.
Although two of the flow path selection devices 50, 52 are shown in the example of,, '<-J' I,, Í - Ί. ., II 7, '* · «L *. njpr¡ »AO system 25 in figure 3, it will be appreciated that<sup>4</sup>” '^<sup>11 .</sup>.....*<sup>XJrl</sup> use any number (including one) of flow path selection devices in accordance with the principles of this disclosure. The devices 50, 52 illustrated in Figure 3 are of the type known to those of skill in the art as jet-type fluid rate amplifiers, but other types of flow path selection devices (for example, flow amplifiers) may be used. pressure-type fluid ratio, bistable fluid switches, proportional fluid ratio amplifiers, etc.) in accordance with the principles of this disclosure. <sub>x</sub>
Fluid flowing through flow path 58 enters a flow chamber 84 through an inlet 8 6 that directs fluid to enter the chamber generally tangentially (eg, the chamber is sized similar to a cylinder, and inlet 86 is aligned with a tangent to a circumference of the · 20 cylinder). As a result, the fluid will spiral around chamber 84 until it eventually exits through outlet 40, as schematically indicated by arrow 90 in Figure 3.
The fluid flowing through the path of
<img file="MX337033B_D0024.tif" />
ru flow 60 enters flow chamber 84 (Item-'m »inlet 88 which directs fluid to flow more directly to outlet 40 (for example, in a radial direction, as schematically indicated by the 5 arrow 92 in figure 3). As will be readily appreciated, much less energy is consumed at the same flow rate when the fluid flows more directly to the outlet 40 compared to the situation when the fluid flow flows less directly to the outlet.
Therefore, less flow resistance is experienced when the fluid composition 36 flows more directly to the outlet 40 and, conversely, more flow resistance is experienced when the fluid composition flows less directly to the outlet. Therefore, when working upstream from the outlet
40, less flow resistance is experienced when most of the fluid composition 36 flows into chamber 84 from inlet 88, and through flow path 60.
Most fluid composition 36 flows through flow path 60 when fluid exits control port 80 at a higher rate or speed compared to fluid exiting control port 82. More fluid exits port control 80 when a majority of the fluid flowing from passages 64, 68, 74 flows through flow path 54.
Most of the fluid flowing from passages 64, 68, 74 flows through flow path 54 when fluid exits control port 70 at a higher rate or speed compared to fluid exiting control port 66 More fluid leaves the control port when a viscosity of fluid composition 36 is above a selected level.
Therefore, flow through system 25 is less resisted when fluid composition 36 has an increased viscosity (and a higher proportion of desired to unwanted fluid therein). Flow through system 25 is further resisted when fluid composition 36 has a decreased viscosity.
More resistance to flow is experienced when fluid composition 36 flows less directly to outlet 40 (eg, as indicated by arrow 90). Therefore, more resistance to flow is experienced when a majority of the fluid composition 36 flows into chamber 84 from inlet 86, and through flow path 58.
A majority of fluid composition 36 flows through flow path 58 when fluid exits £
from control port 82 at a higher rate or speed in
MEXICAN INSTITUTE t> tf ™ DE LA PROFIEDAD <
INDUSTRLAL compared to the fluid leaving the control port
80. More fluid leaves control port 82 when a majority of the fluid flowing from passages 64, 68, 74 flows through flow path 56, rather than through flow path 54.
A majority of the fluid flowing from the passages
64, 68, 74 flows through flow path 56 when fluid exits control port 66 at a higher rate or speed compared to fluid exiting control port 70. More fluid exits control port when a viscosity of fluid composition 36 is below a selected level.
As described above, system 25 is configured to provide less resistance to flow when fluid composition 36 has an increased viscosity, and more resistance to flow when fluid composition has a decreased viscosity.
This is beneficial when you want to flow more of a higher viscosity fluid, and less of a lower viscosity fluid (for example, to produce more oil and less water or gas).
If you want to flow more of a lower viscosity fluid and less of a viscosity fluid
<img file="MX337033B_D0025.tif" />
higher (eg, in order to produce more gas and less water, or to inject more steam and less water), the system 25 can then be easily reconfigured for this purpose. For example, inlets 86, 88 could be conveniently inverted, so that the fluid flowing through flow path 58 is directed to inlet 88, and the fluid flowing through flow path 60 is directed at entrance 86.
Referring now further to Figures 4A and B, another configuration of flow chamber 84 is illustrated representatively, in addition to the rest of the variable flow resistance system 25. Flow chamber 84 of Figures 4A and B is similar in most respects to the flow chamber of Figure 3, but differs at least in that one or more structures 94 are included in the chamber. As shown in the figures
4A and B, structure 94 can be considered as a single structure having one or more landings or openings 96 therein, or as multiple structures separated by landings or openings.
Structure 94 induces any portion of fluid composition 36 that flows circularly around chamber 84, and has a relatively high speed, high density, or low viscosity of
ΎΤ Τ ', Ti' Ϊ / 'Ύ: r Γ' <sup>;</sup> j:? ''. r'g ···: 'to continue flowing in a circular way around the chamber, but at least one of the openings 96 allows more direct flow of the fluid composition from the inlet to the outlet 40. Therefore, when fluid composition 36 enters other inlet 86, it initially flows in a circular fashion in chamber 84 around outlet 40, and structure 94 increasingly resists or prevents a change in flow direction. from the fluid composition to the outlet, as the velocity and density of the fluid composition increases, and as the viscosity of the fluid composition decreases. However, openings 96 allow fluid composition 36 to gradually spiral inward to outlet 40.
In FIG. 4A, a relatively high speed, low viscosity, high density fluid composition 36 enters chamber 84 through inlet 86.
Part of the fluid composition 36 can also enter chamber 84 through inlet 88, but in this example, a substantial majority of the fluid composition enters through inlet 86, thus flowing tangentially into the flow chamber 84 initially (i.e. at an angle of 0 degrees relative to a tangent to the outer circumference of the flow chamber).
<img file="MX337033B_D0026.tif" />
Upon entering the chamber ^ fluid composition 36 initially flows circularly around outlet 40. For most of its path around outlet 40, the fluid composition is prevented, or at least 5 prevented 36 change direction and flow radially toward the outlet through structure 94. However, openings 90 gradually allow portions of fluid composition 36 to spiral radially inward toward outlet 40.
In FIG. 4B, a relatively low speed, high viscosity, low density fluid composition 36 enters chamber 84 through inlet 88.
Part of the fluid composition 36 can also enter chamber 84 through inlet 86, but in this example, a substantial majority of the fluid composition enters through inlet 88, thus flowing radially through the chamber flow 84 (i.e. at a 90 degree angle relative to a tangent to the outer circumference of the flow chamber).
One of the openings 96 allows the fluid composition 36 to flow more directly from the inlet to the outlet 40. Therefore, the radial flow of the fluid composition 36 to the outlet 40 in this example significantly is not resisted or impeded
INSTITUTE 'DE LA>
<img file="MX337033B_D0027.tif" />
the i.
structure 94.
If a portion of the relatively low speed, high viscosity, and low density fluid composition 36 were to flow circularly around outlet 40 in Figure 4B, the openings 96 will allow the fluid composition to easily change direction and flow more directly into the departure. In fact, as a viscosity of fluid composition 36 increases, or as a density or velocity of fluid composition decreases, structures 94 in this situation will increasingly impede the circular flow of fluid composition 36 around chamber 84, allowing the fluid composition to more easily change direction and flow through openings 96.
Note that multiple openings 96 need not be provided in structure 94, because fluid composition 36 could flow more directly from inlet 88 to outlet 40 through a single opening, and a single opening as well could allow flow from inlet 86 to gradually spiral inward to outlet. Any number of openings 96 (or other areas of low resistance to radial flow) could be maintained in accordance with the principles
MC-ICAHO INSTITUTE
OF THE PPDI'IEDAD
INDUSTRIAL
<img file="MX337033B_D0028.tif" />
of this disclosure. Also, one of the openings need not be placed directly between inlet 88 and outlet 40. Openings 96 in structure 94 may allow more direct flow of fluid composition 36 from inlet 88 to outlet 40, even if some circular flow of the fluid composition around the structure is necessary for the fluid composition to flow inward through one of the openings.
It will be appreciated that more loop flow of the fluid composition 36 in the example of FIG. 4A results in more energy consumed at the same flow rate, and therefore more resistance to flow of the fluid composition compared to the example in figure 4B. If oil is a desired fluid, and water and gas are unwanted fluids, then it will be appreciated that the variable flow resistance system 25 of the figures
4A and B will provide less resistance to flow of fluid composition 36 when it has an increased ratio of desired to unwanted fluid therein, and will provide greater resistance to flow when fluid composition has a decreased ratio of desired to unwanted fluid in it. same.
Referring further now to the
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MEXICAN INSTITUTE OF THE PROP.'ÍD / .u INDUS r.TlAL figure 5, another configuration of the Indian 8 4 .. £ a ^> ..
In this configuration, chamber 84 includes four of the structures 94, which are equally separated by four openings 96. The structures 94 may be equally or unequally separated, depending on the desired operating parameters of system 25.
Referring now further to Figures 6A and B, another configuration of the variable flow resistance system 25 is illustrated. The variable flow resistance system 25 of Figures 6A and B differs substantially from that of Figure 3, at least in which is much less complex and has far fewer components. In fact, in the configuration of the figures
6A and B, only camera 84 is interposed between input 38 and output 40 of system 25.
Chamber 84 in the configuration of Figures 6A and B only has an inlet 86. Chamber 84 also includes structures 94 therein.
In Figure 6A, a relatively high speed, low viscosity, high density fluid composition 36 enters chamber 84 through inlet 8 6 and is influenced by structure 94 to continue to flow around the chamber. Fluid composition 36 then flows in circuit through chamber 84 .4
<img file="MX337033B_D0029.tif" />
eventually spiraling inward at exit 40 to ls \ -. - '··· - ·. , ». · ,. - • -ΧΣ. » ;.; f. ^. · t as it gradually deviates from structure 94 through openings 96.
However, in Figure 6B the fluid composition 36 has a lower speed, increased viscosity, and decreased density. Fluid composition 36 in this example can more easily change direction as it flows into chamber 84 through inlet 86, allowing it to flow more directly from inlet to outlet 40 through openings
96.
It will be appreciated that a much more in-circuit flow path taken by the fluid composition 36 in the example of FIG. 6A consumes more of the energy of the fluid composition at the same flow rate and therefore results in more flow resistance compared to the much more direct flow path taken by the fluid composition in the example in Figure 6B. If oil is a desired fluid, and water and gas are unwanted fluids, then it will be appreciated that the variable flow resistance system 25 of Figures 6A and B will provide less resistance to flow of fluid composition 36 when it has an increased ratio fluid desired to unwanted in it, and
Á in;
<img file="MX337033B_D0030.tif" />
will provide greater resistance to flow when the fluid composition has a decreased ratio of desired to unwanted fluid in it.
Although only one inlet 86 is used in the configuration of Figures 6A and B to admit fluid composition 36 into chamber 84, in other examples multiple inlets could be provided, if desired. Fluid composition 36 could flow into chamber 84 through multiple inlets simultaneously or separately. For example, different inputs could be used for the situation where the fluid composition has different corresponding characteristics (such as different speeds, viscosities, densities, etc.).
Structure 94 may be in the form of one or more helices that extend circumferentially with one or more of the openings 96 between the helices.
Alternatively, or additionally, structure 94 could be in the form of one or more cavities that circumferentially extend into one or more chamber walls 84. Structure 94 could project in and out relative to one or more chamber walls 84. Therefore, it will be appreciated that, in accordance with the principles of this disclosure, any
<img file="MX337033B_D0031.tif" />
every time
F <sup>Λ</sup> type of structure that functions to further influence fluid composition 36 to continue to flow in circuit around chamber 84 as the velocity or density of the fluid composition increases, or as a fluid viscosity decreases and which functions to increasingly prevent the circular flow of the fluid composition around the chamber as the speed or density of the fluid composition decreases or as the fluid viscosity increases.
Various illustrative schematic examples of structure 94 are shown in Figures 7A-J, with the cross-sectional views of Figures 7A-G being taken along line 7-7 of Figure 4B. These various examples demonstrate that a wide variety of possibilities exist for constructing structure 94, and so it should be appreciated that the principles of this disclosure are not limited to the use of any particular structure configuration in chamber 84.
In Figure 7A, structure 94 comprises a wall or helix that extends between the upper and lower walls (as seen in the drawings) 98, 100 of chamber 84. Structure 94 in this example prohibits flow radially toward into fluid composition 36 from an exterior portion of chamber 84, except in
<img file="MX337033B_D0032.tif" />
T?:? Ro //-.::::-/,-10} Λ «·? -Λ
<img file="MX337033B_D0033.tif" />
opening 96.
In Figure 7B, structure 94 comprises a wall or helix that extends only partially between walls 98, 100 of chamber 84. Structure 94 in this example does not prohibit radially inward flow of fluid composition 36, but it resists a change in the direction of circular to radial flow in the outer portion of chamber 84.
An entrance (such as entrance 88) could be placed at a height relative to the chamber walls
98, 100 such that the fluid composition 36 entering chamber 84 through that inlet does not substantially impact structure 94 (eg, flowing over or under the structure). Another inlet (such as inlet 86) could be positioned at a different height, so that the fluid composition 36 entering chamber 84 through that inlet substantially impacts structure 94. More resistance to flow would be experienced by the fluid composition 36 that impinges on the structure.
In Figure 7C, structure 94 comprises rigid filaments, bristles, or wires that resist radially inward flow of fluid composition 36 from the outer portion of chamber 84. Structure 94
<img file="MX337033B_D0034.tif" />
INSTITUTE ΜΕΧΌΑΜΠ OF PROPERTY
INDUSTRIAL
<img file="MX337033B_D0035.tif" />
in this example it can be extended completely or partially <sup>X</sup> —Wini n ,, wi ----<sub>F</sub> between walls 98, 100 of chamber 84, and can extend inward from both walls.
In Figure 7D, structure 94 comprises multiple cavities and circumferentially extending projections which resist flow radially inward of fluid composition 36.
Either or both of the cavities and projections can be provided in chamber 84. If only the cavities are provided, then structure 94 may not protrude into chamber 84 at all.
In Figure 7E, structure 94 comprises multiple circumferentially extending corrugations formed in chamber walls 98, 100 of chamber 84. Similar to the configuration of Figure 7D, the corrugations include cavities and projections, but in other examples, they can provide any of the cavities and projections. If only cavities are provided, then structure 94 may not protrude into chamber 84 at all.
In Figure 7F, structure 94 comprises circumferentially but radially offset radially extending walls or propellers extending inwardly from chamber walls 98, 100. It can be used and
r * ni '
<img file="MX337033B_D0036.tif" />
any number, arrangement and configuration of the walls ^ or propellers, in accordance with the principles of this disclosure.
In Figures 7G and H, structure 94 comprises a wall or helix extending inwardly from chamber wall 100, with another helix 102 influencing fluid composition 36 to change direction axially relative to outlet 40. For example , propeller 102 could be configured so that it directs fluid composition 36 to flow axially away from, or toward outlet 40.
Propeller 102 could be configured so that it achieves mixing of fluid composition 36 received from multiple inlets, increases resistance to fluid flow circularly in chamber 84, and provides resistance to fluid flow at different axial levels of the camera etc. Any number, arrangement, configuration, etc., of propeller 102 may be used in accordance with the principles of this disclosure.
The propeller 102 can provide greater resistance to the circular flow of the fluids of increased viscosity, so that said fluids are more easily diverted towards the outlet 40. Therefore, although the structure 94 increasingly prevents more than a fluid composition 36 that has increased speed,
<img file="MX337033B_D0037.tif" />
OF INDUSTRIAL PROPERTY
<img file="MX337033B_D0038.tif" />
increased density or viscosity - g-educed to flow radially inward to outlet 40, propeller 102 can increasingly resist the circular flow of an increased viscosity fluid composition.
An entrance (such as entrance 88) could be placed at a height relative to the chamber walls
98, 100 such that the fluid composition 36 entering chamber 84 through that inlet does not substantially impact structure 94 (eg, flowing over or under the structure). Another inlet (such as inlet 86) could be positioned at a different height, so that the fluid composition 36 entering chamber 84 through that inlet substantially impacts structure 94.
In Figure 71, frame 94 comprises a one-piece cylindrical wall with openings 96 distributed around the wall, at alternate upper and lower ends of the wall. Structure 94 would be placed between the end walls 98, 100 of the chamber
84.
In Figure 7J, structure 94 comprises a one-piece cylindrical wall, similar to that shown in Figure 7J, except that openings 96 are distributed around the middle portion of the a
jf.
<img file="MX337033B_D0039.tif" />
wall between its upper and lower ends<sup>1</sup>'-*-’»—
Additional configurations of the flow chamber and the structures 94 therein are representatively illustrated in Figures 8A-11. These additional configurations demonstrate that a wide variety of different configurations are possible without departing from the principles of this disclosure, and those principles are by no means limited to the specific examples described herein and shown in the drawings.
In Figure 8A, chamber 84 is similar in most respects to that of Figures 4A-5, with two inlets 86, 88. Most fluid composition having a relatively high speed, low viscosity, and a high density flows into chamber 84 through inlet 86 and flows circularly around outlet 40. Structures 94 prevent radially inward flow of the fluid composition to outlet 40.
In Figure 8B, most fluid composition 36 having a relatively low speed, high viscosity, and low density flows into the chamber through inlet 88. One of structures 94 prevents direct flow of the composition. of fluid 36 from inlet 88 to outlet 40, but the fluid composition
MEXICAN INSTITUTE
OF THE PROPERTY \
INDUSTRIAL (. <> 5 • <sub>B</sub> - - '<sup>!</sup><* __ JKZ to flow around
Therefore, one of figure 8B is ¡4 is similar in figures 6A and B, you can easily change direction of each of the structures.
resistance to flow of system 25 lower than that of figure 8A.
In FIG. 9A, the chamber most aspects to that of a single inlet 86. Fluid composition 36 having a relatively high speed, low viscosity, and high density flows into chamber 84 through inlet 86 and flows in a circular manner around outlet 40. Structure 94 prevents radiant flow into the fluid composition 36 toward outlet
40.
In FIG. 9B, fluid composition 36 having a relatively low speed, high viscosity, and low density flows into chamber 84 through inlet 86. Structure 94 prevents direct flow of fluid composition 36 from entrance 88 to exit
40, but the fluid composition can easily change direction to flow around the structure and through opening 96 toward the outlet. Therefore, a flow resistance of the system 25 of FIG. 9B is less than that of FIG. 9A.
It has been postulated that by preventing the flow of
MEXICAN INSTITUTE DS THE PROPERTY
INDUSTRIAL fluid composition 36 of relatively low speed, high viscosity, and low density directly to outlet 40 from inlet 88 in Figure 8B, or from inlet 86 in Figure 9B, the radial velocity of the fluid composition toward the outlet it can be desirably decreased, without significantly increasing the flow resistance of the system 25.
In Figures 10 and 11, chamber 84 is similar in most respects to the configuration of Figures 4A-5, with two inlets 86, 88. Fluid composition 36 flowing into chamber 84 through the Inlet 86 will flow at least initially in a circular fashion around outlet 40, while fluid composition flowing into the chamber through inlet 88 will flow more directly to the outlet.
Multiple cup-shaped structures 94 are distributed around chamber 84 in the configuration of Figure 10, and multiple structures are located in the chamber in the configuration of Figure 11. These structures 94 can increasingly impede the circular flow of the fluid composition 36 around outlet 40 when the fluid composition has a decreased velocity, increased viscosity, and decreased density. In this way, structures 94 can
<img file="MX337033B_D0040.tif" />
rr <'
Funcionar · function to stabilize relatively low speed, high viscosity, and low density fluid flow in chamber 84, even though the structures do not significantly impede the circular flow of relatively high speed, low viscosity, and high density fluid around the outlet 40.
There are many other possibilities for placement, configuration, number, etc. of the structures in the chamber 84. For example, the structures 94 could have a wing shape or a cylinder shape, the structures could comprise notches oriented radially relative to the outlet 40, etc. Any arrangement, position, and combination of structures 94 may be used in accordance with the principles of this disclosure.
It can now be fully appreciated that this disclosure provides several advances to the fluid flow regulation technique in an underground well. The various configurations of the variable flow resistance system 25 described above allow control of desired and unwanted fluids in a well, without the use of complex, expensive or failure-prone mechanisms. In contrast, system 25 is relatively straightforward and inexpensive to produce, operate and maintain, and is reliable in operation.
<sup>INST</sup>™ 7 <'MEXICAN VÍSSLj
OF INDUSTRIAL PROPERTY
The above disclosure provides a variable flow resistance system 25 for use in an underground well. System 25 includes a flow chamber 84 through which a fluid composition 36 flows. Chamber 84 has at least one inlet 86, 88, one outlet 40, and at least one structure 94 that prevents a change in circular flow fluid composition 36
<td>about</td><td>the exit</td><td> 40</td>
<td> 40.</td><td></td><td></td>
<td>The</td><td>composition</td><td>of</td>
<td>of the camera</td><td>flow 84</td><td>in</td>
<td>The</td><td>structure</td><td> 94</td>
changing circular flow of fluid composition 36 around outlet 40 to radial flow to outlet in response to at least one of a) increased velocity of fluid composition 36, b) decreased viscosity of fluid composition 36, c) increased density of fluid composition 36, d) a reduced ratio of desired fluid to unwanted fluid in fluid composition 36, e) decreased inlet angle of fluid composition 36 into chamber 84, and f) more substantial incidence of fluid composition 36 on structure 94.
<img file="MX337033B_D0041.tif" />
Structure 94 may have at least one opening that allows fluid composition 36 to change direction and flow more directly from inlet 86, 88 to outlet 40.
At least one inlet may comprise at least first and second inlets, wherein first inlet 88 directs fluid composition 36 to flow more directly into outlet 40 of chamber 84 compared to second inlet 86.
At least one input may comprise only one input 86.
Structure 94 may comprise at least one of a propeller and a cavity.
Structure 94 can project to at least one inward or outward relative to a wall 98,
100 from camera 84.
Fluid composition 36 can exit chamber 84 through outlet 40 in a direction that changes based on a ratio of desired fluid to unwanted fluid in fluid composition 36.
Fluid composition 36 can flow more directly from inlet 86, 88 to outlet 40 as the viscosity of fluid composition 36 increases, as the speed of the composition of fluid decreases.
IMPI <sup>, NST</sup>^ BBs
<img file="MX337033B_D0042.tif" />
fluid 36, as fluid composition 36 decreases, as the ratio of desired fluid to unwanted fluid in fluid composition 36 increases, and as an inlet angle of fluid composition 36 increases.
Structure 94 can reduce or increase the speed of fluid composition 36 as it flows from inlet 86 to outlet 40.
The foregoing disclosure also provides the art with a variable flow resistance system 25 comprising a flow chamber 84 through which a fluid composition 36 flows. Chamber 84 has at least one inlet 86, 88, one outlet 40 , and at least one structure 94 that prevents the circular flow of the fluid composition 36 around the outlet 40.
A variable flow resistance system 25 for use in an underground well was also previously described, with the system comprising a flow chamber 84 including an outlet 40 and at least one structure 20 94 which resists a change in a flow direction of a fluid composition 36 towards outlet 40. Fluid composition 36 enters chamber 84 in a flow direction that changes based on a ratio of desired fluid to unwanted fluid in the composition of 'Ar, ί * · A4 7
INS.
í PT ituto v. ExiOí. a DE LA f fO! - 'ir.OAi>
INDUSTRIAL fluid 36.
Fluid composition 36 can exit the chamber through outlet 40 in a direction that changes based on a ratio of desired fluid to unwanted fluid in fluid composition 36.
Structure 94 can prevent a change from circular flow of fluid composition 36 around outlet 40 to radial flow to outlet 40.
Structure 94 may have at least one opening that allows fluid composition 36 to flow directly from first inlet 88 of chamber 84 to outlet 40. First inlet 88 can direct fluid composition 36 to flow more directly towards outlet 40 of chamber 84 compared to a second inlet 86.
The opening 96 in the structure 94 can allow the direct flow of the fluid composition 36 from the first inlet 88 to the outlet 40. In an example described above, the chamber 84 includes only one inlet 86.
Structure 94 may comprise a propeller or a cavity. Structure 94 can project inward or outward relative to one or more chamber walls 98, 100, 84.
Fluid composition 36 can flow smoothly
<img file="MX337033B_D0043.tif" />
MEXICAN INSTITUTE W THE PROPERTY
INDUSTRIAL
<img file="MX337033B_D0044.tif" />
more direct from inlet 86 of chamber 84 to ττιΐϊίΐιι ·· ιι-ι «^ ·» ιη * ίΛ. «ihwh outlet 40 as a viscosity of fluid composition 36 increases, as a velocity of fluid composition 36, as a density of fluid composition 36 increases, as a ratio of desired fluid to unwanted fluid in fluid composition 36 increases, as an inlet angle of the composition of fluid increases.
<td>fluid 36 and</td><td>custom</td><td>than</td><td>decreases the</td><td>incidence</td><td>of</td><td>the</td>
<td colspan="5">fluid composition 36 on structure 94.</td><td></td><td></td>
<td>The</td><td>structure</td><td> 94</td><td>can induce</td><td>servings</td><td>of</td><td>the</td>
<td>composition</td><td>fluid</td><td> 36</td><td>flowing from</td><td colspan="3">circular way</td>
<td>about</td><td>the exit</td><td> 40</td><td colspan="2">to keep flowing from</td><td colspan="2">way</td>
<td colspan="2">circulate around</td><td>the</td><td>exit 40. The</td><td>structure</td><td> 94</td><td>of</td>
<td>preference</td><td>prevents a</td><td colspan="2">flow change</td><td>circular</td><td>of</td><td>the</td>
Fluid composition 36 around outlet 40 at radial flow to outlet 40.
The above disclosure also describes a variable flow resistance system 25 including a flow chamber 84 through which a fluid composition 36 flows. Chamber 84 has at least one inlet 86, 88, one outlet 40, and at least one structure 94 that prevents a change in circular flow of fluid composition 36 around outlet 40 to radial flow to the outlet
40.
1 'You O
I JLVA r
MEXICAN INSTITUTE OF INDUSTRIAL PROPERTY
<img file="MX337033B_D0045.tif" />
•1
The above disclosure also describes a variable flow resistance system 25 including a flow path selection device 52 that selects through which of the multiple flow paths 58, 60 most of the fluid flows from device 52, based on a ratio of desired fluid to unwanted fluid in a fluid composition 36.
A flow chamber 84 of system 25 includes an outlet
40, a first inlet 88 connected to a first of the flow paths 60, a second inlet 86 connected to a second of the flow paths 58, and at least one structure 94 that prevents radial flow of fluid composition 36 from the second inlet 86 to outlet 40 rather than preventing radial flow of fluid composition 36 from first inlet 88 to outlet 40.
A flow control device (eg, variable flow resistance system 25) for installation in an underground bore 12 may comprise:
an inner surface 98, 100, 110 defining an inner chamber 84, the inner surface including a side perimeter surface 110 and opposite end surfaces (eg walls 98, 100), a greater distance between the opposite end surfaces is
<img file="MX337033B_D0046.tif" />
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• NSTI i UTO 'Λ ύΧίΟΛ-ÁO £' λ / · SH LA? (1 “Λΰ V ': ·.
ÍHCiJi'íTJAL
-T \
0 $ less than a larger dimension of I4 s.,. .S'Up.g ^ .fl.g ie g. ^ ,. dQ ....... ,,,, opposite ends, a first port (eg outlet 40) through one of the end surfaces (eg wall 100), and a second port (eg inlet 86) through the inner surface and separated from the first port, the side perimeter surface 110 operates to direct the flow from the second port 86 to rotate around the first port 40, and may further comprise a flow path structure (eg structures 94) in the inner chamber 84.
Flow path structure 94 can operate to direct flow from second port 86 to rotate around first port 40. Flow path structure can operate to allow flow from second port 86 to flow directly into first port 40.
The first port 40 may comprise an output from inner chamber 84, and the second port 8 6 may comprise an input to inner chamber 84.
Flow path structure 94 may comprise an interior wall (eg, as in the example of Figure 7F) extending from at least one of the opposite end surfaces 98, 100. The interior wall may extend from one of the surfaces of
<img file="MX337033B_D0048.tif" />
IMPI
MEXICAN INSTITUTE of PROPERTY <sup>Χ</sup> INDUSTRIAL end opposite to the other surface Hp. <sub>OY</sub>-t-<sub>r</sub>opposite g.mQ (for example, from one wall 98 to the other wall 100, as in the example of Figure 7J)). The inner wall can extend from one of the opposite end surfaces and can define a gap between one top of the inner wall and the other opposite end surface (eg, as in the example of Figure 7F).
Flow path structure 94 may comprise a first helix 102 extending from one of the opposite end surfaces (eg, wall or 100), and a second helix 102 extending from the other opposite end surface.
Flow path structure 94 can
<td>understand the</td><td>less</td><td colspan="2">one of</td><td>filaments, bristles</td><td>or</td><td>wires</td>
<td>15 spreading</td><td>since</td><td>a</td><td>of</td><td>The surfaces</td><td>of</td><td>extreme</td>
<td>opposing 98,</td><td colspan="3">100 cavities</td><td colspan="3">defined in at least one of</td>
opposite end surfaces 98, 100, defined ripples on at least one of opposite end surfaces 98, 100, and propellers 102.
A flow control device (eg, variable flow resistance system 25) for installation in an underground borehole 12 may include a cylindrical chamber 84 to receive flow through chamber inlet 86 and direct flow to a chamber outlet 40, a larger axial dimension a (see figure cylindroid chamber 84 is smaller than a larger diametrical dimension D of the cylindroid chamber 84, cylindroid chamber 84 promotes a rotation of the flow around the chamber outlet 40 and a degree of rotation is based on a characteristic of an inlet flow through the chamber inlet 86, and a flow path structure 94 in cylindroid chamber 84.
The degree of rotation can be based on an inflow density, an inflow viscosity, and an inflow velocity.
An increase in the degree of rotation can increase a resistance to flow between an interior and an exterior of device 25, and a decrease in the degree of rotation decreases a resistance to flow between interior and exterior.
The degree of rotation can be based on a spatial relationship between a position of the flow path structure 94 in the cylindroid chamber 84 and a direction of inlet flow through chamber inlet 86.
Cylindrical chamber 84 may be cylindrical. The cylindrical chamber 84 can include a lateral perimeter surface 110 and opposite end surfaces 98
<img file="MX337033B_D0049.tif" />
110 can be
100, and the lateral perimeter surface perpendicular to both opposite end surfaces 98,
100.
A method of controlling flow in an underground bore 12 may include receiving flow in a cylindrical chamber 84 from flow control device 25 in a bore 12, cylindrical chamber 84 comprises a plurality of chamber inlets 86, 88, a larger dimension axial a of cylindroid chamber 84 is smaller than a larger diametric dimension D of cylindroid chamber 84; direct the flow by a flow path structure 94 into the cylindrical chamber 84;
and promoting a rotation of the flow through the cylindroid chamber 84 around a chamber outlet 40, where a degree of rotation is based on a characteristic of the inlet flow through at least one of the chamber inlets 86, 88 .
Promoting rotation may comprise, increasing the degree of rotation based on an inflow viscosity, increasing the degree of rotation based on an inflow velocity, and increasing the degree of rotation based on an inflow density .
Directing flow through flow path structure 94 may comprise, increase, or
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WínüTO; · ΐ7 .: '·<sup>:</sup>
<img file="MX337033B_D0051.tif" />
'-Ρ ·
<img file="MX337033B_D0052.tif" />
decrease the degree of rotation gsa ,,, .... base ^ jgjx characteristic of the input flow through at least one of the camera inputs 86, 88 and allow the
<td>less</td><td>a</td><td>flow portion</td><td>flow</td><td>directly towards</td><td>the</td>
<td>departure</td><td>of</td><td>camera 40 from to</td><td>less</td><td>one of the entrances</td><td>of</td>
<td>camera</td><td> 86,</td><td> 88.</td><td></td><td></td><td></td>
Promoting rotation can comprise, increasing the degree of rotation, and increasing the degree of rotation can increase a resistance to flow through the cylindroid chamber 84.
It will be understood that the various examples described above can be used in different orientations, such as inclined, inverted, horizontal, vertical, etc., and in various configurations, without departing from the principles of the present disclosure. The embodiments illustrated in the drawings are shown and described simply as examples of useful applications of the principles of the disclosure, which are not limited to specific details of these embodiments.
Of course, one skilled in the art would readily appreciate that, upon careful consideration of the above description of representative embodiments, many modifications, additions, substitutions, deletions, and other changes can be made.
A to these specific modalities, and such changes are within the scope of the principles of this disclosure. Accordingly, the foregoing detailed description will be clearly understood as being provided by way of illustration and example only, the spirit and scope of the present invention is limited only by the appended claims and their equivalents.
Contents26
63 sheets
Sheet 1 Sheet 2 Sheet 3 Sheet 4 Sheet 5 Sheet 6 Sheet 7 Sheet 8 Sheet 9 Sheet 10 Sheet 11 Sheet 12 Sheet 13 Sheet 14 Sheet 15 Sheet 16 Sheet 17 Sheet 18 Sheet 19 Sheet 20 Sheet 21 Sheet 22 Sheet 23 Sheet 24 Sheet 25 Sheet 26 Sheet 27 Sheet 28 Sheet 29 Sheet 30 Sheet 31 Sheet 32 Sheet 33 Sheet 34 Sheet 35 Sheet 36 Sheet 37 Sheet 38 Sheet 39 Sheet 40 Sheet 41 Sheet 42 Sheet 43 Sheet 44 Sheet 45 Sheet 46 Sheet 47 Sheet 48 Sheet 49 Sheet 50 Sheet 51 Sheet 52 Sheet 53 Sheet 54 Sheet 55 Sheet 56 Sheet 57 Sheet 58 Sheet 59 Sheet 60 Sheet 61 Sheet 62 Sheet 63
173 members in 13 offices
Priority claims8
| Document | Office | Kind | Date |
|---|---|---|---|
| 79214610 | United States of America | A | |
| 79214610 | United States of America | A | |
| 13351035 | United States of America | – | |
| 201213351035 | United States of America | A | |
| 201213351035 | United States of America | A | |
| 13351035 | – | – | – |
| US20100792146 | – | – | – |
| US201213351035 | – | – | – |
Members173
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| US2011042091A1 | United States of America | A1 | |
| US2011042092A1 | United States of America | A1 | |
| WO2011022210A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO2011022211A2 | World Intellectual Property Organization (WIPO) | A2 | |
| WO2011022210A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO2011022210A3 | World Intellectual Property Organization (WIPO) | A3 | |
| WO2011022211A3 | World Intellectual Property Organization (WIPO) | A3 | |
| US2011186300A1 | United States of America | A1 | |
| CA2787332A1 | Canada | A1 | |
| WO2011097101A1 | World Intellectual Property Organization (WIPO) | A1 | |
| US2011214876A1 | United States of America | A1 | |
| CA2740459A1 | Canada | A1 | |
| CN102268978A | China | A | |
| EP2392771A2 | European Patent Office (EPO) | A2 | |
| US2011297385A1 | United States of America | A1 | |
| MX2011005641A | Mexico | A | |
| AU2011202159A1 | Australia | A1 | |
| US2011308806A9 | United States of America | A9 | |
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| US2012111577A1 | United States of America | A1 | |
| CN102472092A | China | A | |
| CN102472093A | China | A | |
| EP2467569A2 | European Patent Office (EPO) | A2 | |
| EP2467570A2 | European Patent Office (EPO) | A2 | |
| US8235128B2 | United States of America | B2 | |
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1 legal event, as the office reported them to INPADOC
Events
| Event | Code | |
|---|---|---|
| Grant or registrationFG | FG |
Numbers
- Publication
- 337033
- Publication, DOCDB
- 337033
- Publication, EPODOC
- MX337033
- Application
- 608
- Application, DOCDB
- 2013000608
- Application, EPODOC
- MX20130000608
Titles
- Spanish
- SISTEMA DE RESISTENCIA DE FLUJO VARIABLE CON ESTRUCTURA DE INDUCCIÓN DE CIRCULACIÓN EN EL MISMO PARA RESISTIR DE MANERA VARIABLE EL FLUJO EN UN POZO SUBTERRÁNEO.
Classification
- CPC, 7
- E21B34/06
- E21B43/12
- Y10T137/2087
- Y10T137/2093
- Y10T137/2109
- Y10T137/2229
- E21B2200/02
- IPC, 4
- E21B34 06
- E21B43 12
- F15C1 08
- F15C1 16