Method of treating a wellbore at high temperature in contact with carbon dioxide
AssigneeSchlumberger Technology Corporation
InventorsLeiming Li, Lijun Lin, Curtis L. Boney, Michael D. Parris, Kevin W. England
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Abstract
A method for treating a subterranean formation is made of steps of providing a composition comprising a carrier fluid, a polymer viscosifying agent, carbon dioxide and a formate salt or formic acid; injecting into a wellbore, the composition; contacting the composition with the subterranean formation, wherein the temperature is above 100 degrees Celsius at this contact; and allowing the composition to treat the subterranean formation.
Claims31
A method comprising:
- a. providing a composition comprising a carrier fluid, a polymer viscosifying agent, and a formate ion compound;
- b. contacting the composition with carbon dioxide;
- and
- c. allowing the composition to be at a temperature above 100 degrees Celsius.
A method of treating a subterranean formation comprising:
- a. providing a composition comprising a carrier fluid, a polymer viscosifying agent, carbon dioxide and a formate ion compound;
- b. injecting into a wellbore, the composition;
- c. contacting the composition with the subterranean formation, wherein the temperature is above 100 degrees Celsius at this contact;
- and
- d. allowing the composition to treat the subterranean formation.
A composition comprising a carrier fluid, a polymer viscosifying agent, carbon dioxide and a formate ion compound, wherein the carbon dioxide is present with a foam quality of from about 25% to about 80%.
Dependencies are inferred from the claim text.