发明名称 |
HYDROCARBON RECOVERY |
摘要 |
Low concentrations, 1-10%, of potassium salt, especially potassium formate, are used in a drilling fluid in oil production. Preferably they are used with guar derivatives, most preferably carboxymethyl hydroxypropyl guar. The concentration of potassium formate is maintained at the desired level by adjusting the potassium formate to maintain a desired Zeta potential in the circulating drilling fluid. The potassium formate/guar derivative composition may be used in the substantial absence of hydrophilic clay additive. |
申请公布号 |
WO03102106(A3) |
申请公布日期 |
2004.02.26 |
申请号 |
WO2003GB02193 |
申请日期 |
2003.05.21 |
申请人 |
CLEARWATER INTERNATIONAL, LLC;HARDING, RICHARD, PATRICK |
发明人 |
SMITH, KEVIN, W.;MACKEY, RUSTY, R. |
分类号 |
C09K8/08;C09K8/16;C09K8/504;C09K8/514 |
主分类号 |
C09K8/08 |
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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