发明名称 |
Use of downhole isolation valve to sense annulus pressure |
摘要 |
A method of drilling a wellbore includes deploying a drill string into the wellbore through a casing string disposed in the wellbore. The casing string has a pressure responsive element and a hydraulic line (37o) in communication with the element and extending along the casing string. The method further includes: drilling the wellbore into a formation by injecting drilling fluid through the drill string and rotating a drill bit of the drill sting; and while drilling the formation, monitoring (21m) a pressure of the hydraulic line to ensure control of the formation. |
申请公布号 |
AU2014321317(A1) |
申请公布日期 |
2016.03.17 |
申请号 |
AU20140321317 |
申请日期 |
2014.09.19 |
申请人 |
WEATHERFORD TECHNOLOGY HOLDINGS, LLC |
发明人 |
NOSKE, JOE;MUELLER, GARY L. |
分类号 |
E21B34/10;E21B21/08;E21B21/10;E21B47/06 |
主分类号 |
E21B34/10 |
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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