发明名称 |
Automatic standpipe pressure control in drilling |
摘要 |
A method of controlling standpipe pressure in a drilling operation can include comparing a measured standpipe pressure to a desired standpipe pressure, and automatically adjusting a choke in response to the comparing, thereby reducing a difference between the measured standpipe pressure and the desired standpipe pressure. A standpipe pressure control system for use in a drilling operation can include a controller which outputs an annulus pressure setpoint based on a comparison of a measured standpipe pressure to a desired standpipe pressure, and a choke which is automatically adjusted in response to the annulus pressure setpoint. A well system can include a standpipe line connected to a drill string in a wellbore, a sensor which measures pressure in the standpipe line, and a controller which outputs an annulus pressure setpoint based at least in part on a difference between the measured pressure and a desired standpipe pressure. |
申请公布号 |
AU2011364954(B2) |
申请公布日期 |
2016.03.24 |
申请号 |
AU20110364954 |
申请日期 |
2011.04.08 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
KNUDSEN, KJETIL ARNE;VARPE, FREDRIK |
分类号 |
E21B21/08;E21B47/00;E21B47/06 |
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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