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US 9,068,108 B2Granted
Methods and compositions for stimulating the production of hydrocarbons from subterranean formations
AssigneeCESI Chemical, Inc.
InventorsRandal M. Hill, Lakia M. Champagne, Nathan L. Lett, Maria Elizabeth Green
Life of this patent
Estimating the term…
Abstract
Methods and compositions for stimulating of the production of hydrocarbons (e.g., formation crude oil and/or formation gas) from subterranean formations are provided. In some embodiments, the compositions are emulsions or microemulsions, which may include water, a terpene, and a surfactant. In some embodiments, methods of selecting a composition for treating an oil or gas well are provided.
Claims16
An emulsion or a microemulsion for stimulating an oil or gas well, comprising:
- an aqueous phase;
- a surfactant, wherein the surfactant is present in an amount between about 15 wt % and about 55 wt % versus the total composition;
- a freezing point depression agent, wherein the freezing point depression agent is present in an amount between about 5 wt % and 40 wt % versus the total composition;
- and
- an oil continuous phase being a terpene, wherein the terpene is nopol and wherein the nopol is present in an amount between about 5 wt % and about 40 wt % versus the total composition, and wherein the ratio of water to terpene is between about 3:1 and about 1:2.
2 more elements
An emulsion or a microemulsion for stimulating an oil or gas well, comprising:
- an aqueous phase;
- a surfactant, wherein the surfactant is present in an amount between about 15 wt % and about 55 wt % versus the total composition;
- a freezing point depression agent, wherein the freezing point depression agent is present in an amount between about 5 wt % and 40 wt % versus the total composition;
- and
- an oil continuous phase being a terpene, wherein the terpene is eucalyptol, and wherein the eucalyptol is present in an amount between about 5 wt % and about 40 wt % versus the total composition, and wherein the ratio of water to terpene is between about 3:1 and about 1:2.
2 more elements
Dependencies are inferred from the claim text.