Invention Grant
- Patent Title: Quaternary foamers for downhole injection
- Patent Title (中): 用于井下注射的第四纪起泡器
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Application No.: US13102251Application Date: 2011-05-06
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Publication No.: US08746341B2Publication Date: 2014-06-10
- Inventor: Duy T. Nguyen , Fenfen Huang
- Applicant: Duy T. Nguyen , Fenfen Huang
- Applicant Address: US IL Naperville
- Assignee: Nalco Company
- Current Assignee: Nalco Company
- Current Assignee Address: US IL Naperville
- Agent Edward O. Yonter
- Main IPC: E21B41/02
- IPC: E21B41/02 ; E21B43/00 ; E21B43/25 ; C09K8/54 ; C09K8/94

Abstract:
A method of foaming a fluid for recovering gas from a gas well and enhancing oil production from a gas-lifted oil well penetrating a subterranean oil-bearing formation is disclosed and claimed. The method includes introducing into the fluid a foam-forming amount of a composition comprising at least one compound having the general formula: R1 is selected from a saturated linear or branched alkyl, an unsaturated linear or branched alkyl, a substituted naphthalene, a substituted benzene, a natural oil, and a natural oil derivative. R2 is a C2-C8 alkyl. R3, R4, and R5 are independently selected from trimethyl, triethyl, diethyl, monoethyl, benzyl dimethyl, and benzyl diethyl. X is selected from hydrogen, methyl, and ethyl. Z− is a negatively charged counterion.
Public/Granted literature
- US20120279715A1 NOVEL QUATERNARY FOAMERS FOR DOWNHOLE INJECTION Public/Granted day:2012-11-08
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