Compositions and Methods for Treating a Water Blocked Well
First Claim
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1. A method of treating a hydrocarbon-bearing subterranean formation having non-connate water, the method comprising contacting the hydrocarbon-bearing subterranean formation with a composition comprising solvent and a wettability modifier, wherein the solvent at least partially displaces or solubilizes the water in the formation.
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Abstract
The present invention includes a method of treating a hydrocarbon-bearing clastic formation having non-connate water, the method includes contacting the hydrocarbon-bearing clastic formation with a composition that includes a solvent and a surfactant wherein the solvent at least partially displaces or solubilizes the water in the formation.
155 Citations
29 Claims
- 1. A method of treating a hydrocarbon-bearing subterranean formation having non-connate water, the method comprising contacting the hydrocarbon-bearing subterranean formation with a composition comprising solvent and a wettability modifier, wherein the solvent at least partially displaces or solubilizes the water in the formation.
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2. (canceled)
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6. (canceled)
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8. (canceled)
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12. A method of reconditioning a hydrocarbon-bearing formation treated with a first wettability modifier, wherein the treated hydrocarbon-bearing formation is at least partially water-blocked, the method comprising:
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contacting the treated hydrocarbon-bearing formation that is at least partially water-blocked with a fluid, wherein the fluid at least partially displaces water in the hydrocarbon-bearing formation; obtaining performance information from the hydrocarbon-bearing formation after contacting the hydrocarbon-bearing formation with the fluid; and making a determination based at least partially on the performance information whether to re-treat the hydrocarbon-bearing formation with a second wettability modifier. - View Dependent Claims (14, 15, 16, 19, 21, 22, 23)
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13. (canceled)
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17. (canceled)
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18. (canceled)
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20. (canceled)
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24. A method of treating a hydrocarbon-bearing formation having connate brine and at least one first gas relative permeability, wherein the formation is not otherwise liquid blocked or damaged by liquid, the method comprising:
contacting the hydrocarbon-bearing formation with a wettability modifier, wherein when the wettability modifier is contacting the hydrocarbon-bearing formation, the formation has at least one second gas relative permeability, and wherein the second gas relative permeability is at least 5% higher than the first gas relative permeability. - View Dependent Claims (25, 27, 28)
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26. (canceled)
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29-50. -50. (canceled)
Specification