Sleeve-type low pressure responsive APR tester valve
作者： Kevin R. Manke
DOI:
关键词:
摘要: An annulus pressure responsive tester valve which includes a pressure-assisted isolation including differential metering cartridge utilizes sleeve-type section having ported sleeve mandrel and outer member also choke associated therewith for controlling the flow of fluids through valve.
lens.org 参考文章(22)
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