1) downhole back flow valve
井下回流阀
2) downhole non-return valve
井下止回阀
1.
Describe the behavior and distinguishing feature of downhole non-return valves about separate zone water injection,and analyze on the structure of downhole non-return valves of pressure control and generalize the methods of extending the service life of downhole non-return.
阐述了分层注水用井下止回阀的工况条件和工作原理,分析了其结构和零部件的受力状态,总结了延长阀门使用寿命的方法。
3) down-hole bi-directional flow valves
井下流体双向流动阀
1.
We put the down-hole bi-directional flow valves into down-hole when operation at the end of 2001.
2001年年底,在油井作业时下入井下流体双向流动阀,既减少作业入井液漏失,又保证检泵作业不再发生入井液漏失,而且该井生产期间的地层处理施工不受影响。
4) subsurface safety valve
井下安全阀
1.
This paper briefly introduces the principle of work of subsurface safety valve,analyses present technical situation and production of domestic and foreign in the last few years and concludes development current of subsurface safety valve that develop the system of subsurface safety valve for reliable,simple structure and Intellectualization performance from now on.
介绍了井下安全阀的工作原理,对国内外的研究现状及成果进行分析,总结出井下安全阀今后的发展趋势,必须是发展性能可靠、结构简单、智能化的井下安全阀系统,并提出了几点建议。
5) Downhole casing shut-off valve
井下套管阀
6) downhole safety valve
井下安全阀
1.
A downhole safety valve for offshore well completion is developed.
目前国内尚没有适合海上油井完井采油的井下安全阀定型产品，为此研制出SF－1型井下安全阀。
补充资料：见止回阀
分子式：
CAS号：
性质：见不可逆转变
CAS号：
性质：见不可逆转变
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条