发明名称 |
Oil well drilling fluids with improved anti-settling properties and methods of providing anti-settling properties to oil well drilling fluids |
摘要 |
An improved drilling fluid with enhanced anti-settling properties useful for oil well drilling systems is described. The invention includes a process for providing anti-settling properties to oil invert (i.e., water in oil emulsion) based fluids. The drilling fluid/drilling mud invention contains at least one copolymer reaction product of which the reactants comprise at least one ethylenically unsaturated carboxylic compound and at least one alpha-olefin. As an alternative embodiment one or more rheologically-active clays including organoclays and smectite clays in combination with such copolymer reaction product are also added to the drilling fluid. The invention also includes an anti-settling additive comprising a rheologically active clay and the above described copolymer.
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申请公布号 |
US6159906(A) |
申请公布日期 |
2000.12.12 |
申请号 |
US19970941701 |
申请日期 |
1997.10.01 |
申请人 |
RHEOX, INC. |
发明人 |
MCNALLY, KEITH;NAE, HEMI;GAMBINO, JAMES |
分类号 |
C09K8/32;C09K8/36;(IPC1-7):C09K7/00 |
主分类号 |
C09K8/32 |
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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