摘要
许多种压控测试阀均是通过环空加泵压打开 ,泄掉泵压关闭 ,开井过程中环空始终保持一定的开启压力。PCTH测试阀可实现持开的功能 ,环空泄压后仍能保持开启状态 ,使用起来更加方便、灵活。
Many pressure dominated testing valve is through pumping of relieving annulus pressure to realize open or shut down hole test valve and keep annulus pressure for certain all the time.PCTH tested valve has the function of being open state constantly and that keeping on open after annulus pressure relived out makes it much handy and be liable to be used.
出处
《油气井测试》
2004年第4期77-79,共3页
Well Testing
