发明授权
- 专利标题: Methods and fluid compositions for depositing and removing filter cake in a well bore
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申请号: US10379856申请日: 2003-03-05
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公开(公告)号: US06983798B2公开(公告)日: 2006-01-10
- 发明人: Bradley L. Todd
- 申请人: Bradley L. Todd
- 申请人地址: US OK Duncan
- 专利权人: Halliburton Energy Services, Inc.
- 当前专利权人: Halliburton Energy Services, Inc.
- 当前专利权人地址: US OK Duncan
- 代理商 Robert A. Kent
- 主分类号: E21B33/13
- IPC分类号: E21B33/13
摘要:
The current invention provides methods of using and drilling and servicing fluid compositions for depositing and removing filter cake from the walls of a well bore. The compositions make use of particulate solid bridging agent comprised of a salt of an organic acid. The bridging particles are dissolvable by a clean-up solution comprised of a mild solvent that is less corrosive than the conventional strong mineral acids used for this purpose.