发明名称 |
FOAMING AGENTS FOR USE IN COAL SEAM RESERVOIRS |
摘要 |
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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申请公布号 |
WO0163090(A2) |
申请公布日期 |
2001.08.30 |
申请号 |
WO2001EP01832 |
申请日期 |
2001.02.19 |
申请人 |
SOFITECH N.V.;SCHLUMBERGER CANADA LIMITED;COMPANIE DES SERVICES DOWELL SCHLUMBERGER S.A. |
发明人 |
ENGLAND, KEVIN, W.;BROWN, J., ERNEST;HINKEL, JERALD, J.;REDDY, RAMCHANDRA, M. |
分类号 |
C09K8/70;C09K8/94;(IPC1-7):E21B43/00 |
主分类号 |
C09K8/70 |
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