发明名称 |
A system for controlling wellbore pressure during pump shutdowns |
摘要 |
The present disclosure contemplates a method and apparatus for maintaining well pressure control despite fluctuations arising due to mud pump speed changes during startup and shutdown of a mud pump. More particularly, the present disclosure relates to a method and apparatus for closely coordinating changes in mud pump speed, or the flow rate of drilling mud, with the operation of choke valves for the maintenance of a constant drilling fluid pressure during drilling breaks such as the addition of drill pipe sections to the drill string. |
申请公布号 |
AU2015264330(A8) |
申请公布日期 |
2016.12.22 |
申请号 |
AU20150264330 |
申请日期 |
2015.05.19 |
申请人 |
Power Chokes |
发明人 |
Spencer, Danny;McCaskill, John W.;McHardy, John;Charles, Scott |
分类号 |
E21B21/08 |
主分类号 |
E21B21/08 |
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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