发明名称 |
Preemptive setpoint pressure offset for flow diversion in drilling operations |
摘要 |
A method of controlling pressure in a well can include transmitting an instruction to change flow through an annulus formed radially between a drill string and a wellbore, and adjusting a pressure setpoint in response to the transmitting. A well drilling system can include a flow control device which varies flow through a drill string, and a control system which changes a pressure setpoint in response to an instruction for the flow control device to change the flow through the drill string. A method of controlling pressure in a well can include transmitting an instruction to divert flow from a drill string, and adjusting a pressure setpoint in response to the transmitting. |
申请公布号 |
AU2011380946(A1) |
申请公布日期 |
2014.04.17 |
申请号 |
AU20110380946 |
申请日期 |
2011.11.08 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
LOVORN, JAMES R.;DAVIS, NANCY S. |
分类号 |
E21B33/06;E21B33/04 |
主分类号 |
E21B33/06 |
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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