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井下安全阀 [jǐng xià ān quán fá]
[油气] subsurface safety valve
DHSV(downhole safety valve)
DHSV(downhole safety valve)
- 井下排水或天然气管道一般用先导式安全阀。
natural gas pipeline, underground drainage or the general use of the pilot-type safety valve. - 作业期间，密切注意防喷管工作状况，井下安全阀压力等。
Pay close attention to the conditions of lubricator and down-hole SSV, etc. during operation. - 操纵井下完井设备（如地面控制的井下安全阀）所用的小直径液压管线。
A small-diameter hydraulic line used to operate downhole completion equipment such as the surface controlled subsurface safety valve (SCSSV).
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