发明名称 |
COMPOSITIONS AND METHODS FOR SERVICING SUBTERRANEAN WELLS |
摘要 |
Fluid compositions containing a silica-particle suspension with no intrinsic cementitious properties may be pumped into a wellbore. Upon making downhole contact with previously placed well cements from primary-cementing or previous remedial-cementing operations, the silica suspension reacts to form a gel that seals voids, cracks or fissures in the cement sheath. Portland cement is the preferred cement with which the silica-particle suspensions interact downhole. |
申请公布号 |
EP2417213(A1) |
申请公布日期 |
2012.02.15 |
申请号 |
EP20100710810 |
申请日期 |
2010.03.25 |
申请人 |
SERVICES PETROLIERS SCHLUMBERGER;SCHLUMBERGER TECHNOLOGY B.V.;SCHLUMBERGER HOLDINGS LIMITED;PRAD RESEARCH AND DEVELOPMENT LIMITED |
发明人 |
JAMES, SIMON;MICHAUX, MICHEL;CARELLI, CLARA;LE ROY-DELAGE, SYLVAINE |
分类号 |
C09K8/42;C04B28/22;E21B33/13 |
主分类号 |
C09K8/42 |
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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