Selectively-operable well tools
作者： Albert A Mullins
DOI:
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摘要:
lens.org 参考文章(4)
William O Berryman, Multiple-opening bypass valve ,(1966)
Burchus Q Barrington, Well tool with hydraulic impedance mechanism and rotary ball valve ,(1966)
Iii James W Kisling, Multiple purpose well tools ,(1965)
Benjamin P Nutter, Well tool valve actuators ,(1967)