The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 29, 1985
Filed:
May. 19, 1980
Hsiu Kuo Chen, Mission Viejo, CA (US);
Charles P Thomas, Littleton, CO (US);
Phillips Petroleum Company, Bartlesville, OK (US);
Abstract
Permeable portions of a subterranean formation are temporarily plugged by driving a foam formed by interacting an aqueous surfactant solution and dense fluid carbon dioxide into the permeable portions of the formation. In an embodiment of the invention the aqueous surfactant solution and the dense fluid carbon dioxide are introduced into the formation by sequential slug injections of the foam generating compositions. In another embodiment oil is displaced from an oil-bearing underground formation by plugging more permeable portions of the formation as described above, introducing a drive fluid into the formation and producing recovered oil and drive fluid from a well penetrating the formation.