发明名称 |
DOWNHOLE PRESSURE SENSING DEVICE FOR OPEN-HOLE OPERATIONS |
摘要 |
A drilling assembly is provided that includes a drillpipe, a drill bit provided at a downhole end of the drillpipe, and a pressure control module positioned proximate to the drill bit, the pressure control module including a pressure sensor that detects pressure conditions at the drill bit and automatically shut-off fluid flow within the drillpipe upon detecting a threshold pressure condition. A processor is provided at the pressure control module that communicates with a computer-readable storage medium having instructions stored thereon, to perform the operations of detecting pressure conditions at the drill bit, automatically shutting-off fluid flow within the drillpipe upon detecting a threshold pressure condition, and switching-on fluid flow within the drillpipe upon detecting an activation pressure condition. |
申请公布号 |
WO2016028320(A1) |
申请公布日期 |
2016.02.25 |
申请号 |
WO2014US52332 |
申请日期 |
2014.08.22 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
HESS, JOE ELI;CUTHBERT, ANDY JOHN |
分类号 |
E21B21/08;E21B12/00;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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