发明名称 |
Controlling sulfide scavenger content of oil-based drilling fluid |
摘要 |
The concentration of unspent zinc-based hydrogen sulfide scavenger in an oil-based drilling fluid is controlled by selectively dissolving and extracting the unspent scavenger in a solvent, such as glacial acetic acid, separating the aqueous solution, measuring the concentration of dissolved zinc in the aqueous solution, for example, with an X-ray fluorescence spectrograph, and utilizing the results of the measurements to proportion the extent of changes in concentration of the scavenger in the drilling fluid.
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申请公布号 |
US4805708(A) |
申请公布日期 |
1989.02.21 |
申请号 |
US19870047835 |
申请日期 |
1987.05.06 |
申请人 |
SHELL OIL COMPANY |
发明人 |
MATZA, STEPHEN D.;ELLINGTON, WILLIAM E.;FLEMING, III, HENRY C. |
分类号 |
E21B49/00;G01N25/14;G01N33/28;(IPC1-7):G01N31/02;G01N33/24 |
主分类号 |
E21B49/00 |
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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