发明名称 |
SAFETY VALVE WITH ELECTRICAL ACTUATOR AND TUBING PRESSURE BALANCING |
摘要 |
<p>A pressure equalization apparatus can include separate longitudinal bores which form a continuous flowpath, the flowpath alternating direction between the bores, and the bores being interconnected at opposite ends thereof. A well system can include a well tool with a chamber therein containing an assembly in a dielectric fluid, and a pressure equalization apparatus including a flowpath having one end connected to the chamber, and the other end connected to a source of a another fluid, the flowpath extending in opposite directions between the flowpath ends through multiple separate bores. A method of installing a well tool can include attaching a mandrel to the well tool, then lowering the well tool at least partially into the well suspended from the mandrel, and then securing a pressure equalization apparatus to the mandrel, a flowpath of the apparatus being connected to a chamber of the well tool containing an assembly.</p> |
申请公布号 |
EP2697479(A1) |
申请公布日期 |
2014.02.19 |
申请号 |
EP20110863609 |
申请日期 |
2011.12.21 |
申请人 |
HALLIBURTON ENERGY SERVICES, INC. |
发明人 |
WILLIAMSON, JIMMIE, R., JR.;SCOTT, BRUCE, E. |
分类号 |
E21B34/08;E21B34/14;E21B34/16 |
主分类号 |
E21B34/08 |
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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