再颁专利
- 专利标题： Controlling sulfide scavenger content of drilling fluid
- 专利标题（中）： 控制钻井液中的硫化物清除剂含量
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申请号： US158828申请日： 1988-02-19
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公开(公告)号： USRE33349E公开(公告)日： 1990-09-25
- 发明人: Stephen D. Matza , William E. Ellington , Henry C. Fleming, III
- 申请人： Stephen D. Matza , William E. Ellington , Henry C. Fleming, III
- 申请人地址： TX Houston
- 专利权人： Shell Oil Company
- 当前专利权人： Shell Oil Company
- 当前专利权人地址： TX Houston
- 主分类号： E21B49/00
- IPC分类号： E21B49/00
摘要：
The concentration of unspent zinc-based hydrogen sulfide scavenger in an aqueous drilling fluid is controlled by selectively extracting the unspent scavenger in a solvent, such as glacial acetic acid, measuring the concentration of dissolved zinc, for example, with an X-ray fluorescence spectrograph, and utilizing the results of the measurements to proportion the extent of changes to be made in the concentration of the scavenger.
公开/授权文献
- US4400284A Boron derivatives as lubricant additives 公开/授权日：1983-08-23
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