LPR-N测试阀的工作状态与其氮气腔的压力变化

Work Condition of LPR-N Testing Valve and the Pressure Change of Its Nitrogen Chamber.

LPR N测试阀是APR工具测试管柱的主阀。其主要作用是实现测试中的开关井。深入讨论了该阀在井下的工作状态 ,特别是氮气腔的压力变化 。

LPR N testing valve is the main valve for testing drill stem of APR tools, of which the key role is to make true the close and open of well during testing period. The paper discusses the work condition at down hole, especially the pressure change of its nitrogen chamber that provides a theoretical and methodical help for field operation.