Methods and compositions for stimulating the production of hydrocarbons from subterranean formations using emulsions comprising terpene
First Claim
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1. A method of treating a formation crude oil well having a wellbore comprising:
- injecting an emulsion or a microemulsion into the wellbore of the formation crude oil well to stimulate displacement of residual aqueous treatment fluid by formation crude oil and increase production of formation crude oil by the well,wherein the emulsion or the microemulsion comprises water, a terpene, and a surfactant;
wherein the surfactant comprises a fatty acid polyglycol ester having 6-24 carbon atoms and 2-40 ethylene oxide units; and
wherein the terpene has a phase inversion temperature greater than or equal to 43°
C.
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Abstract
Methods and compositions for stimulating of the production of hydrocarbons (e.g., formation crude oil and/or formation gas) from subterranean formations, and methods of selecting a composition for treating an oil or gas well. In some embodiments, the compositions are emulsions or microemulsions, which may include water, a terpene, and a surfactant.
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Citations
8 Claims
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1. A method of treating a formation crude oil well having a wellbore comprising:
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injecting an emulsion or a microemulsion into the wellbore of the formation crude oil well to stimulate displacement of residual aqueous treatment fluid by formation crude oil and increase production of formation crude oil by the well, wherein the emulsion or the microemulsion comprises water, a terpene, and a surfactant; wherein the surfactant comprises a fatty acid polyglycol ester having 6-24 carbon atoms and 2-40 ethylene oxide units; and wherein the terpene has a phase inversion temperature greater than or equal to 43°
C. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of treating a formation gas well having a wellbore comprising:
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injecting an emulsion or a microemulsion into the wellbore of the formation gas well to stimulate displacement of residual aqueous treatment fluid by formation gas and increase production of formation gas by the well, wherein the emulsion or the microemulsion comprises water, a terpene, and a surfactant; wherein the surfactant comprises a fatty acid polyglycol ester having 6-24 carbon atoms and 2-40 ethylene oxide units; and wherein the terpene has a phase inversion temperature less than 43°
C. - View Dependent Claims (8)
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Specification