发明名称 |
DRILLING FLUID SYSTEMS WITH IMPROVED FLUID LOSS PROPERTIES |
摘要 |
A drilling fluid system comprising a brine and a quantity of cationic copolymers comprising a ratio of acrylamide monomers to cationic derivatives of acrylamide monomers, wherein the quantity and the ratio are effective to maintain effective rheology and fluid loss control in said drilling fluid system at temperatures of at least about 250 DEG C for at least about 16 hours.
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申请公布号 |
WO0027944(B1) |
申请公布日期 |
2000.08.10 |
申请号 |
WO1999US26135 |
申请日期 |
1999.11.05 |
申请人 |
BAKER HUGHES INCORPORATED |
发明人 |
CHESSER, BILLY, G.;PERRICONE, CHARLES;BETTGE, GEORGE, W. |
分类号 |
C09K8/12;(IPC1-7):C09K7/02;E21B21/00 |
主分类号 |
C09K8/12 |
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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