发明名称 |
Process for controlling gas migration during well cementing |
摘要 |
The present invention provides a cement composition and a process for using the cement composition to inhibit gas migration from a subterranean zone into the cement. The process comprises displacing a gelling additive, preferably comprised within a cement composition, into a well bore such that the gelling additive passes into the subterranean zone, and allowing the gelling additive to form a crosslinked gel in the subterranean zone to inhibit gas migration from the subterranean zone. The crosslinked gel acts as a barrier to gas in the subterranean zone and thereby inhibits the gas from passing into the cement and forming flow channels therein before the cement can set.
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申请公布号 |
US2004048751(A1) |
申请公布日期 |
2004.03.11 |
申请号 |
US20020233038 |
申请日期 |
2002.08.30 |
申请人 |
DAO BACH;BIEZEN EWOUT;VIJN JAN PIETER;PHAM THIEN |
发明人 |
DAO BACH;BIEZEN EWOUT;VIJN JAN PIETER;PHAM THIEN |
分类号 |
C04B7/00;C04B24/26;C04B26/02;C04B28/02;C08J3/00;C09K3/00;C09K8/493;E21B;E21B21/00;E21B33/13;E21D11/04;(IPC1-7):E21B21/00 |
主分类号 |
C04B7/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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