Device used in the form of a packer or a temporary plug.

(54) Title: DEVICE USED IN THE FORM OF A TEMPORARY PACKAGING OR PLUG. (54) Title: DEVICE USED IN THE FORM OF A PACKER OR A TEMPORARY PLUG.

(57) Summary

The invention relates to geophysical research methods, in particular geophysical methods for well research, and can be used to seal a well bore area during logging.

(57) Abstract

The invention relates to geophysical investigation methods, in particular to geophysical methods for well surveying and can be used for sealing a well bore zone during logging.

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Μ Λ nUFAIUA Say Ι.ΓΟΝΟΜΙΆ

Institute

Mexican Property

Industrial

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PATENT TITLE NO. 338745

Owner (s): SCHLUMBERGER TECHNOLOGY BV

Address: Parkstraat 83-89, 2514, JG The Hague, NETHERLANDS

Name: DEVICE USED IN THE FORM OF A TEMPORARY PACKAGING OR PLUG. Classification: IC 8: E21B33 / 12

Inventor (s): DEAN WILLBERG

Number:

MX / a / 2009/003043

YOU

Country;

RU

REQUEST

Coot of international presentation:

September 2007

PRIORITY

Date: Number:

September 2006. ? '2006133823

Validity: Twenty years

Expiration Date: September 18, 2027

The reference patent is granted based on articles 1, 2 fraction V, 6 fraction III, and 59 of the Industrial Property Law.

In accordance with article 23 of the Industrial Property Law, this patent has a non-extendable term of twenty years, counted from the filing date of the international application and will be subject to the payment of the fee to maintain the rights in force. .

Who subscribes to this title does so based on the provisions of articles 6 sections III and 7 bis 2 of the Industrial Property Law (Official Gazette of the Federation (DOF) 06/27/1991, amended on 02 / 08/1994, 10/25/1996, 12/26/1997, 05/17/1999, 01/26/2004, 06/16/2005, 01/25/2006, 06/05/2009 / 06/01 / 2010, 06/18/2OÍO; 06/28/2010, 01/27/2012 and 04/09/2012); Articles 1, 3, faction V, subsection a), sub subsection iii), 4th and 12th fractions l and III of the Regulations of the Mexican Institute of Industrial Property (DOF 14 (12/1999, amended on 07/01/2002, 15) / 07/2004, 07/28/2004 and 09/07/2007); articles 1, 3, 4, 5, section V, Section a), sub-section II), 16 sections I and III and 30 of Organic Statute of the Mexican Institute of Industrial Property (DOF 12/27/1999, amended on 10/10/2002, 07/29/2004, 08/04/2004 and 09/13/2007); 1st, 3rd and 5th subsection a) and antepenultimate paragraph of the Agreement that delegates powers to the Deputy Directors General, Coordinator, Divisional Directors, Heads of Regional Offices, Divisional Deputy Directors, Departmental Coordinators and other subordinates of the Mexican Institute of Property Industrial. (DOF 12/15/1999, amended on 02/04/2000, 07/29/2004, 08/04/2004 and 09/13/2007).

Issue Date: April 29, 2016

DIVISIONAL ASSISTANT DIRECTOR OF PATENT FUND EXAMINATION, AREAS

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The invention relates to geophysical research methods, particularly well geophysical research methods, and can be used to seal seal formation near wells during logging activities.

The plug to isolate the absorption zone for well drilling that consists of flexed filamentary filling, the load to be drilled that will be placed in the operating position is known (UK, Patent 2018631); A flexed filament filler is formed as a splittable beam in the cement slurry stream, therefore one end of the flexed filament filler is rigidly connected to the load to be drilled.

The drawbacks of the known plug are the complexity of its structure and complexity of its placement in the well.

The heel to isolate the absorption zone for drilling wells consisting of flexed filamentary fillers of different density and load formed from the material to be drilled is known (UK. Patent 2049909), whereby the fillers contain different size bands and are formed as bundles, one end of the bundle is rigidly connected to the end of the load and the fillers with density less than 1 g / cm³ connect with the

IΜ P i

MEXICAN INSTITUTE

OF THE PROPERTY ^J

INDUSTRIAL with density greater than 1

The drawback of the structure.

Consists of a reliable box is known (SU, central loading part and fillers g / cm³ with the periphery of the load, known plug is the complexity of its

The package design which made of easily deform material;

Patent 1199905); In the box is placed a box deformation substance (made as an explosion charge) as well as a substance that prevents the liquid from passing; The substance that prevents the liquid from passing is made of a substance that hardens at excessive temperatures, and the second substance is a porophore. This treated solution can be used as a narrower analog of the proposed invention.

The drawbacks of the known packaging are the complexity of its structure and also the complexity of its placement.

The engineering problem solved by the proposed package design is the ease of isolating one or more zones in the hole of the well in the housing cord.

The treated result obtained in the implementation of the proposed design consists of the simplification of the package in well placement technology with simultaneous reduction of its cost price.

To obtain the established engineering result, it is proposed to use a device that works as a

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MEXICAN INSTITUTE rhh -.-. C-Á ¡1 'DE LA PROPIEDAD tv .fifi industrial packaging or temporary stopper consisting of the pipe in which the substance that prevents the passage of liquids is located, said substance that prevents the liquid passage is a layer of fibers made of organic polymers and / or fiberglass and the box is made of materials of at least low solubility in the oil well fluid. In the preferred version during the implementation of the device the box is formed as an integral unit with the expansion operation in the well. Facilitates the device placement process in the well. In the case of forming the box as an integral unit in the most preferred implementation version the device additionally includes an accessory that ensures the expansion of the box in the well which is represented by a spring corrugated core hinged mechanism or umbrella mechanism. hinged (similar devices are highlighted in US Patent 6,915,845).

In a version of the device implementation spiral spring, including in the box both spring ends connected to each other. After each device is placed in the packaging or temporary plug zone it is activated by the action of the spring or hinged umbrella mechanism that ensures that the device box is opened (Figs. 1A-1C). In particular, the actuation of the device can be ensured by the destruction of the substance that keeps the spring mechanism compressed or

IM F!

MEXICAN PROPERTY INSTITUTE

INDUSTRIAL

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hinged mechanism. Destruction is possible, in particular, due to the action of the oil well fluid in said retention facility. The device may also additionally include protective housing protecting it while lowering into the drill string placed in the well. Said housing is preferably made of an easily destructible material, and in the event that the device is placed in the place of a temporary plug or packing, it is mechanically or chemically destroyed. Herein, the device case acquired the ability to capture fibers from the liquid column located earlier. In the preferred implementation version the box is a wire sphere or rotating body open at the top. The rotating body in longitudinal cross section can be triangular, possibly with rounded angles as well as semi-oval or semi-circle. Where the upper surface is additional it may be an element made of fabric, mesh, or permeable perforated material and can be used for fiber gathering. Said element ensures a more complete collection of fibers in the case of the surface under the force of gravity of the fibers. The items in the box may be made of a memory effect material. The shape of the box can be changed by changing the fluid temperature of the oil well.

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Also, the box may be made of a destructible material in the oil well environment. In particular, the box-forming elements can be, at least partially formed from polyhydroxypropanoic acid, polyglycolic acid, polyethylene terephthalate, polyamides, polyurethanes or mixtures of these materials. Furthermore, the box may be formed, at least partially, of material capable of reacting with the filament decomposition products and / or at least partially, of materials that can be destroyed with easily rinsed fluid (particularly aluminum or magnesium or its alloys). All this allows, if necessary, to easily remove the temporary package or cap by removing (solvent) the box.

Furthermore, the box may be formed of elements submerged in the well separately, which forms said box in the well. In this case, the elements can be sticky surface fibers and / or fibers that interconnect due to physical interaction (magnetic or electrostatic).

The fibers included in the substance that prevents the liquid from passing can preferably be formed of polyhydroxypropanoic acid, polyglycolic acid and fiberglass. Said liquid-preventing substance may additionally contain expanding particles, expanding fibers as well as reinforcing fibers. Also, the τ V Τ '£ / 1 instttjto m ^ ícJX

Say La β ^ β W £&gt; ujt_hmi substance that prevents the passage of liquid ρθ ^ '&lt;Γ * ~ · ϊτ · ιο1) ΑΑΧ · additionally materials that promote expansion or hardening by creating chemical bonds within the fibers. Furthermore, the essence of the invention will be explained in greater detail.

Initially, a flexible or operating housing chain, drill chain, service chain, slip sleeve, etc., are inserted into the well. Via these elements, the device box formed as a packed housing and a deformed metal, elastomer or plastic frame (particularly, a group of polymers such as polyhydroxypropanoic acid, polyethylene terephthalate, polyamides, polyaramides, polyphenols) is lowered into the water well. The device is distributed to the pressure package placement location via housing chains (or on the box's flexible chain, drill chain, service chain, or other chain) as shown in Fig. IA. In another implementation version the box is on the auxiliary cable or tape that goes down to the actuation site. To avoid early actuation and to ensure mechanical protection in such a way that it is established, the box is placed in a protective housing. Said housing may be formed of magnesium, aluminum or plastic (i.e. materials soluble in acidic solutions, strong alkaline solutions, chemically active solutions of

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slowly fluid soluble materials of

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In another version the housing can be opened using a spring release mechanism or in the case of mechanical contact with the chain end of the flexible housing. After placing the box at the temporary packing or plug installation site and / or dissolution of the housing takes place the box actuation process. The struts of the open box on the wall of the oil well to be attached, to the gasket or the gasket plug position in the well (Fig. IB). The drive method depends on the method of supplying it to the well. The box can be operated using the spring release mechanism, gas filler, power tools, mechanical manipulations with the chain end of the flexible housing, smooth wire, work chain, or electromagnetic mechanism. Also the box can assemble the well of the small elements (rods, adhesive fibers, flexible or spring elements, self-assembled magnetic elements (as pre-coating filter forming process).

After actuation of the box a certain amount of suspended fiber drilling mud is pumped through it. The box is covered with fibers and a dense packing is formed which prevents the oil well fluid from passing, that is, the packing or packing plug is

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INST.'Ti JTc MEZICANO DE LA PROVÍrUAp

INDUSTRY,.

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form by isolating the appropriate well hole section ~ (- Pig - 1C). Depending on the selection of the material to form this device in the hole of the well, a temporary plug (made of materials subject to destruction) or a permanent plug (made of long-term service materials) can be obtained.

The fiber material can be glass, polymers (polyethylene terephthalate, hydroxypaopanoic acid polymer, polyamides, polyamides, cellulose, and other polymers or homo / co-polymers). Fibers are usually pumped into the well via the service chain (Fig. 2A). The specific fiber size is determined by three conditions: first - the possibility of introducing fibers into the drilling mud in the ground units, second possibility of pumping the suspension obtained by the equipment to the required level, third - the capacity of fibers to accumulate in the device forming a plug (Fig. 2B). Normal fiber size is 3 to 50mm, but length is better in the range of 3mm to 18mm. The diameter of these fibers is 3 micras to 1 mm. The pumping conditions are selected to form the fibers to accumulate in the box and form a dense plug (Fig. 2C). Due to increasing pressure of the formed gasket / plug leans closer to the wall of the oil well, it was partially obtained due to

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the interaction of these fibers with the cTeI pWo — of ——— perforation surface (Fig. 2D).

If a temporary plug / gasket is required, the material selection depends on its ability to destroy itself in the oil well fluid. A good example of such a material is that of fibers produced from hydroxy-propanoic acid polymer. Polyethylene terephthalate acid demonstrates good performance at high temperatures. To accelerate the replacement of temporary packing, acid rinse (mixture of mineral and organic acids) or alkaline sodium hydrate rinse is used to pump the hole from the well.

Thermally stable fibers are used to form the permanent plug / gasket. A good example is fiberglass or novoloid fibers. Combinations of the fibers can be used to form temporary or permanent plug combinations, or materials can be added to improve packing or plug performance. For example, fiberglass normally has a high Young's modulus, consequently, fiberglass is mechanically stronger for use in the well than polymeric fibers with the same diameter (polyethylene terephthalate or hydroxypropanoic acid polymer). .

In particular, fiberglass is normally captured easier and accumulates in the open frame of the

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INSTITUTO MEXICANO 'féárezá 4 OE THE PROPERTY industrial device, but a Softer hydroxy propanoic acid — it —----—- can deform better and promote the plugging of the pressurized channel easier.

The application of the proposed treated solution allows obtaining the following advantages.

For many well activities, isolation of one or more zones in the well or pipe is required. Sometimes insulation plays a supporting role, it is required to facilitate other well activity and then the temporary plug must be removed. That is, first a section of well is isolated and then the main activity is carried out and then the temporary plug that ensures that the insulation is removed. In many cases the lockout, packing plug, or packing forming or removal device requires the use of the wire line, wire flexible housing chain, work chain, or drill pipe more than once.

This invention demonstrates how a permanent or temporary packing plug or packing can be formed in situ using fiber materials. This invention demonstrates that in the event that the appropriate box and its selection of geometry the required fiber plugs can be formed on site using standard well tools.

IMPI

MEXICAN INSTITUTE OE INDUSTRIAL PROPERTY

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like a gasket or and that the fluid may pass