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U.S. Department of Energy
Office of Scientific and Technical Information

Non-aqueous viscosified carbon dioxide and method of use

Patent ·
OSTI ID:6028704
This patent describes a method of treating a subterranean formation penetrated by a well bore. It comprises: solubilizing a polymer comprising N,N-dimethylacrylamide in a substantially anhydrous fluid to form a viscosified fluid; admixing the viscosified fluid with liquid carbon dioxide to form an admixture in which the carbon dioxide is present in an amount sufficient to comprise from about 0% to about 80% by volume of the admixture; introducing the admixture into the well bore; and treating the subterranean formation with the admixture.
Assignee:
Halliburton Co., Duncan, OK (USA)
Patent Number(s):
US 4964467; A
Application Number:
PPN: US 7-417941
OSTI ID:
6028704
Country of Publication:
United States
Language:
English