关键词: 电潜螺杆泵, 投捞电缆, 页岩油, 节能增效, 智能采油

Abstract:

Electric submersible progressive cavity pumps（ESPCP）were used in the preliminary test of Jimsar shale oil well area in Xinjiang Oilfield. The rodless pump lift technology has solved the problems of rod breaking and eccentric wear existing with rod pumps，and is well applicable to heavy oil wells with sand production. With this technology，however，it is difficult to bind cable and tubing together，and cable is readily to be damaged in the process of tripping string. Nonmetallic cable conduit and ESPCP can effectively solve the problems of difficult binding operation and cable damage，but they are difficult to run in，pull out and fish when the oil viscosity is too high. Therefore，a running/pulling cable type ESPCP lift technology was tested. During production，cable is run into well through tubing，and then connected with downhole cable connector. When the pump needs to be lifted，cable is pulled out of tubing.In this way，the tripping in and ou toperations of cable is realized by running in and pulling out through tubing.

This paper introduces the running/pulling cable type ESPCP lift system，and analyzes its field application effect. At present，this system is used in 23 wells in the shale oil well area of Xinjiang Oilfield，and the success rate of cable running，pulling and connecting is 100%. Due to its advantages of intelligent control，energyconservation，less consumption，safety and environment-friendliness，the application of this system is worth expanding.

Key words: running/pulling cable, shale oil, energy conservation and efficiency improvement, intelligent oil production