Nova Patents
CA2745640C

Use of zeta potential modifiers to decrease the residual oil saturation

Abstract

Compositions and methods for their use are disclosed, where the compositions comprise an amine component, an amine/phosphate ester component and optionally a solvent component. The compositions are adapted to coat solid materials, substrates and/or surfaces of producing of reservoirs and formations and methods for making and using same, where the coating agents modify surface properties of the solid materials, substrates and/or surfaces of producing formations decreasing residual oil saturation.

CA2745640C, drawing sheet 1
Sheet 1 of 2

Term

4.8 yearsleft in the term

Expires 7 July 2031.

  1. Priority
  2. Filed
  3. Granted
  4. Today
  5. Expires

12 claims: 9 independent, 3 dependent

  1. 1
    CA 02745640 2013-11-08 The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:1. A method for increasing production comprising: pumping or injecting into an oil producing reservoir or formation a coating composition at least partially to coat surfaces and/or particles of the reservoir or formation with the composition, where the coating modifies surface properties of the surfaces and/or particles of the reservoir or formation to decrease residual oil saturation in the reservoir or formation by decreasing the capillary pressure, wherein the composition comprises a first component, a second component and optionally a solvent component, the first component comprising a first amine, and the second component comprising a reaction product of a second amine or a mixture of second amines and a phosphate compound or mixture of phosphate compounds.
  2. 4
    The method of any one of claims 1 to 3, wherein the second amine comprises an amine of the general formula R',R2NH or mixtures or combinations thereof, where R1 and R2 are independently a hydrogen atom or a carbyl group having from 1 to 40 carbon atoms and the required hydrogen atoms to satisfy the valence and where one or more of the carbon atoms can be replaced by one or more hetero atoms each independently consisting of boron, nitrogen, oxygen, phosphorus, or sulfur and where one or more of the hydrogen atoms can be replaced by one or more single valence atoms each independently consisting of fluorine, chlorine, bromine, or iodine.
  3. 5
    The method of any one of claims 1 to 3, wherein the second amine comprises aniline or an alkyl aniline or a mixture of alkyl anilines, pyridine or an alkyl pyridine or a mixture of alkyl pyridines, pyrrole or an alkyl pyrrole or a mixture of alkyl pyrroles, piperidine or an alkyl piperidine or a mixture of alkyl piperidines, pyrrolidine or an alkyl pyrrolidine or a mixture of alkyl pyrrolidines, indole or an alkyl indole or a mixture of alkyl indoles, imidazole or an alkyl imidazole or a mixture of alkyl imidazoles, quinoline or an alkyl quinoline or a mixture of alkyl quinolines, isoquinoline or an alkyl isoquinoline or a mixture of alkyl isoquinolines, pyrazine or CA 02745640 2013-11-08 an alkyl pyrazine or a mixture of alkyl pyrazines, quinoxaline or an alkyl quinoxaline or a mixture of alkyl quinoxalines, acridine or an alkyl acridine or a mixture of alkyl acridines, pyrimidine or an alkyl pyrimidine or a mixture of alkyl pyrimidines, quinazoline or an alkyl quinazoline or a mixture of alkyl quinazolines, or any mixture or combination thereof.
  4. 6
    The method of any one of claims 1 to 5, wherein the phosphate compound comprises a phosphate ester of the general formula P(O)(OR3)(OR4)(OR5), phosphoric acid, polyphosphoric acid, or any mixture or combination thereof, where R3, R4, and R5 are independently a hydrogen atom or a carbyl group having from 1 to 40 carbon atoms and the required hydrogen atoms to satisfy the valence and where one or more of the carbon atoms can be replaced by one or more hetero atoms each independently consisting of boron, nitrogen, oxygen, phosphorus or sulfur and where one or more of the hydrogen atoms can be replaced by one or more single valence atoms each independently consisting of fluorine, chlorine, bromine or iodine.
  5. 7
    The method of any one of claims 1 to 5, wherein the phosphate compound comprises a phosphate ester including, without limitation, a phosphate ester of an alkanol having the general formula P(O)(OH)x(OR6)y where x + y = 3 and where R6 is independently a hydrogen atom or a carbyl group having from 1 to 40 carbon atoms and the required hydrogen atoms to satisfy the valence and where one or more of the carbon atoms can be replaced by one or more hetero atoms each independently consisting of boron, nitrogen, oxygen, phosphorus or sulfur and where one or more of the hydrogen atoms can be replaced by one or more single valence atoms each independently consisting of fluorine, chlorine, bromine or iodine.
  6. 9
    The method of any one of claims 1 to 8, wherein the first amine comprises an amine of the general formula R/R^NH or mixtures or combinations thereof, where R1 and R2 are independently a hydrogen atom or a carbyl group having from 1 to 40 carbon atoms and the required hydrogen atoms to satisfy the valence, where at least one of R1 and R2 is a nitrogen containing heterocycle, and where one or more of the carbon atoms can be replaced by one or more hetero atoms each independently consisting of boron, nitrogen, oxygen, phosphorus or sulfur and where one or more of the hydrogen atoms can be replaced by one or more single valence atoms each independently consisting of fluorine, chlorine, bromine or iodine. CA 02745640 2013-11-08
  7. 10
    The method of any one of claims 1 to 8, wherein the first amine comprises pyridine or an alkyl pyridine or a mixture of alkyl pyridines, pyrrole or an alkyl pyrrole or a mixture of alkyl pyrroles, piperidine or an alkyl piperidine or a mixture of alkyl piperidines, pyrrolidine or an alkyl pyrrolidine or a mixture of alkyl pyrrolidines, indole or an alkyl indole or a mixture of alkyl indoles, imidazole or an alkyl imidazole or a mixture of alkyl imidazoles, quinoline or an alkyl quinoline or a mixture of alkyl quinolines, isoquinoline or an alkyl isoquinoline or a mixture of alkyl isoquinolines, pyrazine or an alkyl pyrazine or a mixture of alkyl pyrazines, quinoxaline or an alkyl quinoxaline or a mixture of alkyl quinoxalines, acridine or an alkyl acridine or a mixture of alkyl acridines, pyrimidine or an alkyl pyrimidine or a mixture of alkyl pyrimidines, quinazoline or an alkyl quinazoline or a mixture of alkyl quinazolines, or any mixture or combination thereof.
  8. 11
    The method of any one of claims 1 to 8, wherein the first amine comprises an alkyl pyridine.
  9. 12
    The method of any one of claims 1 to 11, wherein the solvent component comprises a lower alcohol having from 1 to 4 carbon atoms, a glycol, an acetate, an oxygen containing solvent or any mixture or combination thereof.
Independent claims9