Study on Speed and Clearance Optimization of All-Metal Progressing Cavity Pumps: Experiment and Simulation

Abstract

The stator and rotor of an all-metal screw pump are made of metal; so the matching method of the all-metal screw pump cannot be like that of the traditional rubber screw pump, and a certain gap must be reserved. If the gap is too small, it will affect the normal operation of the pump. If the gap is too large, the pump leakage will also become larger, affecting the efficiency of the pump. In this paper, the method of numerical simulation is used to optimize the gap of the pump. At the same time, it is found that the optimal gap of the pump is closely related to the viscosity of the fluid transported by the pump, and different viscosity fluids have different optimal speeds. The speed and clearance of the pump are optimized through numerical simulation to ensure high pump efficiency while taking into account energy saving and avoid the waste caused by excessively high speed. Finally, the relevant research results of numerical simulation are verified through experiments, and it is found that the experimental results are in good agreement with the simulation results, which also proves the accuracy of the numerical simulation results.

Multi-objective optimization of the structural parameters of an allmetal progressive cavity pump based on Grey-Taguchi relational analysis

“…Additionally, it can leverage the advantages of good applicability of PCP to heavy oil exploitation, extending the lifting efficiency and production cycle. This further expands the scope of application of PCP.The AMPCP lift technology has promoted the production of heavy oil and has been successfully applied in North America [11][12][13][14]. The AMPCP are widely used in the production of heavy-oil thermal recovery.…”

Roller Profiling for Generating the Screw of a Pump with Progressive Cavities

“…The exploitation activity of the pumps with progressive cavities has highlighted the fact that traditional pumps with a rubber stator, which surrounds the rotor, do not allow the existence of an interstice between them, which limits their activity until the stator wears out [8,9]. Alternatively, a new class of pumps that do not use elastomers has been developed, in which the rotor and the stator are made of metal, and are used in drilling activities in high temperature wells [10][11][12][13]. This eliminates the wear and greatly increases the lifetime of the pump for use with viscous, high density, and abrasive liquids, and with liquids containing material in suspension.…”