发明名称 |
Well drilling and servicing fluids and methods of removing filter cake deposited thereby |
摘要 |
Well drilling and servicing fluids for use in producing formations and methods of removing filter cake therefrom are provided. The methods basically comprise using a drilling or servicing fluid comprised of water, a density increasing water soluble salt, a fluid loss control agent, a hydratable polymer solid suspending agent and a particulate solid bridging agent which is soluble in an aqueous ammonium salt solution. Thereafter, the filter cake deposited by the drilling or servicing fluid is contacted with a clean-up solution comprised of water and an ammonium salt for a period of time such that the bridging agent is dissolved thereby.
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申请公布号 |
US2002139532(A1) |
申请公布日期 |
2002.10.03 |
申请号 |
US20020117373 |
申请日期 |
2002.04.05 |
申请人 |
TODD BRADLEY L.;REDDY B. RAGHAVA;FISK JAMES V.;KERCHEVILLE JAMES D. |
发明人 |
TODD BRADLEY L.;REDDY B. RAGHAVA;FISK JAMES V.;KERCHEVILLE JAMES D. |
分类号 |
C09K8/08;C09K8/10;C09K8/12;C09K8/52;(IPC1-7):C09K7/02;E21B37/00 |
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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