发明名称 |
Lettvekts sementblanding samt fremgangsmåte for å tette rundt et rør i en borebrønn |
摘要 |
A lightweight cement composition, used to seal a pipe in a well bore penetrating a zone or formation which readily fractures at low hydrostatic pressure, comprises hydraulic cement, water and an additive comprising an aqueous suspension of microspheres containing a water swellable clay suspending agent. |
申请公布号 |
NO339168(B1) |
申请公布日期 |
2016.11.14 |
申请号 |
NO20020005777 |
申请日期 |
2002.12.02 |
申请人 |
HALLIBURTON ENERGY SERVICES INC |
发明人 |
VIJN JAN PIETER;DAO BACH;BROTHERS LANCE EVERETT;KEENER KRISTA L;BRADEN JAMES A |
分类号 |
C04B28/02;C04B14/10;C04B18/08;C04B20/00;C09K8/42;C09K8/46;C09K8/467 |
主分类号 |
C04B28/02 |
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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