Design of hydraulic control switch for blocking water in oilfield
贾光政1, 王宣银2
1．Department of M echanical Engineering。Daqing Petroleum Institute，Anda 151400，China；
2．The State Key I ab o1 Fluid Power Transmission and Control，Zhejiang University，Hangzhou 310027，China
Abstract A new type of hydraulic control switch with circular adjustment for blocking water in oil well is developed．The structure and principle of the unit switch and the assembled switch are introduced．The design features and application are explained．The equations used for calculating the geometry parameters and the mechanics parameters are obtained，which can give a guidance to the design of this kind of downhole tool．
JIA Guang-Zheng, WANG Xuan-Yin. Design of hydraulic control switch for blocking water in oilfield. Chinese Journal of Engineering Design, 2002, 9(2): 110-112.
