Submersible direct-drive progressing cavity pump rodless lifting technology

HAO Zhongxian,ZHU Shijia,PEI Xiaohan,HUANG Peng,TONG Zheng,WANG Benyuan,LI Deyin

Table 1 Comparison of operating parameters of ESPCP and previous pumping unit.

Unit Installed power/kW Daily liquid production/t Daily power con- sumption/(kW·h) Active power/kW Reactive power/kW Power factor System efficiency/% Pump efficiency/% Pumping unit 22 24.9 233.23 9.11 20.3 0.409 31.50 56.98 ESPCP 12 24.5 138.20 5.77 0 0.998 39.49 81.95