Experimental research on characteristic of full metal screw pump

In order to study the feasibility and optimal work conditions of artificial lift production by using metal screw pump, some laboratory experiments were conducted by taking the parting full metal screw pump as study subject. Hydraulic characteristics of metal screw pump in the fixed speed conditions and the pressure changing with hydraulic characteristic change and pumping efficiency in different rotate speed were studied, and then the impact of medium with different pressure and viscosity on the volumetric efficiency of screw pump has been analyzed. The hydraulically characteristic curve of metal screw pump and the best speed and reasonable operation parameters under normal operating conditions were determined according to actual influencing factor in field application and full-scale metal screw pump hydraulic characteristic. The research provides reliable experiment data for optimum design on metal screw pump production system about operating well selecting, style design and rotate parameters optimization.