发明名称 |
Device for improving oil and gas recovery in wells |
摘要 |
A device for improving recovery of hydrocarbons through a well is provided. The device creates, regulates and maintains a calculated bottomhole pressure at a desired level and creating above the device a two-phase gas-liquid homogenous flow for efficient lifting of hydrocarbons to a surface. The device has a body having a central through-going opening with a shape corresponding to a shape of a laval nozzle and with a cross section which changes steplessly and gradually, and a mandrel attachable to a tubing and associated with the body without interfering with a flow of fluids.
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申请公布号 |
US7287597(B2) |
申请公布日期 |
2007.10.30 |
申请号 |
US20060442896 |
申请日期 |
2006.05.30 |
申请人 |
SOROWELL PRODUCTION SERVICES LLC |
发明人 |
SHAPOSHNIKOV VLADIMIR M;LEVITAN LEONID;BREIDENSTEIN WALTER |
分类号 |
E21B43/00 |
主分类号 |
E21B43/00 |
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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