Title:
FOAMING AGENTS FOR USE IN COAL SEAM RESERVOIRS
Document Type and Number:
WIPO Patent Application WO2001063090
Kind Code:
B1
Abstract:
A well treatment fluid composition that comprises a carrier fluid and an amphoteric surfactant, and optionally a viscosifying agent and proppant, is well suited for use in fracturing coal beds to stimulate methane production. The composition preferably is a foam that comprises a gas such as nitrogen or air. Preferably, the surfactant has formula R-NH2-(CH2)n-C(O)OX, wherein R is a saturated or unsaturated alkyl group having from 6-20 carbon atoms, n is from 2-6, and X is hydrogen or a salt forming cation.
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Inventors:
ENGLAND KEVIN W
BROWN J ERNEST
HINKEL JERALD J
REDDY RAMCHANDRA M
BROWN J ERNEST
HINKEL JERALD J
REDDY RAMCHANDRA M
Application Number:
PCT/EP2001/001832
Publication Date:
March 28, 2002
Filing Date:
February 19, 2001
Export Citation:
Assignee:
SOFITECH NV (BE)
SCHLUMBERGER CA LTD (CA)
COMPANIE DES SERVICES DOWELL S (FR)
SCHLUMBERGER CA LTD (CA)
COMPANIE DES SERVICES DOWELL S (FR)
International Classes:
C09K8/70; C09K8/94; (IPC1-7): E21B43/26; E21B43/25
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