Production parameter configuring method for screw pumps with surface-driving
Zhang Guodong1, Li Mingzhong1, Xue Jianquan1, Wang Lei2, Yue Guangtao3
1.College of Petroleum Engineering, China University of Petroleum, Qingdao, Shandong 266580, China; 2.CNOOC Research Institute, Beijing 100027, China; 3.Oil Production Technology Shengli Oilfield Research Institute, SINOPEC, Dongying, Shandong 257000, China
Abstract:In order to optimally configure the production parameters of screw pump well and match well with pump, based on screw pump′s temperature field and pressure distribution law of internal liquid, with stator working conditions and pump lifting characteristics, a program checking method for screw pump well with surface-driving was established and a program checking plate was drawn, which divi-ded the production plan into reasonable program zone, pump burning region and pump breakdown area. By calculating and analyzing those parameters of two real oil wells, a production parameter optimizing method combining efficient point and system efficiency curve was proposed. The results show that high rotation speed and pump setting depth can increase stator temperature, improve lifting height, which will cause pump burn out or breakdown when they reach critical values. In order to avoid pump burning region and pump breakdown area and extend pump inspection cycle, improve economic efficiency, the optimal production parameter must be attained in field applications.
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