Full Parameter Analysis of Working Performance of Metallic Progressing Cavity Oil Pump

doi:10.11885/j.issn.1674-5086.2019.02.24.01

Abstract

Abstract: Aiming at the problem that the influences of operation parameters and structural parameters of metallic progressing cavity oil pump (PCP) on its working performance is not clear, the influence of operation parameters and structural parameters of metallic PCP on its working performance was studied. The 3D numerical analysis technology of metallic PCP based on FLUENT computational fluid dynamics software was adopted in the study, and the effects of viscosity, rotational speed and pressure increasement of per stage on Pump displacement, power, volumetric efficiency and system efficiency were obtained. The influence of stator-rotor clearance, eccentricity and stator lead on pump displacement, power, volumetric efficiency and leakage are also discussed. It is further concluded that the structure should adopt higher rotational speed in thermal recovery of heavy oil and lower rotational speed in cold recovery of heavy oil. In addition, the recommended clearance value of stator and rotor is 0.1~0.3 mm, the recommended eccentricity value is 5.0~6.0 mm, the recommended stator lead is 170~200 mm, and the recommended clearance value of stator and rotor is 0.3~0.5 mm; in the heavy oil thermal recovery, the recommended eccentricity should be 4.0~5.0 mm, and the stator lead should be 110~150 mm in heavy oil thermal recovery.

Key words: progressive cavity pump, working performance, kinematics, fluid analysis, leakage

CLC Number:

TE933

ZHONG Gongxiang, LEI Pengyan, ZHU Lingchuang. Full Parameter Analysis of Working Performance of Metallic Progressing Cavity Oil Pump[J]. 西南石油大学学报(自然科学版), 2020, 42(3): 161-169.

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