System Efficiency Evaluation by Using Viscosity-factor

Abstract

Abstract: System efficiency is a reflection of utilization degree of the input energy. Exact evaluation system efficiency is the key to judge performance of rod pumping systems. Based on the system power loss reanalysis, crude oil viscosity, water content, and gas/oil ratio are considered to be the remarkably influencing factors. Mathematical data matching and 0-1 numerical regulation are employed to establish the system efficiency evaluation model with viscosity-factor. Also new variables of dimensionless gas/oil ratio and realized efficiency rate are defined in the process. This method is thought to be the basic to determine system efficiency top as well as bottom limit of the rod-pumped well. The model proposed is applied in some oil field and the system efficiency obtained agrees well with the tested one. It provides theoretical support for whether the optimal design should be done and the order to take measures.

Key words: rod-pumped well, system efficiency, optimization, evaluation graph, regulation

XIAO Wei et al. System Efficiency Evaluation by Using Viscosity-factor[J]. 西南石油大学学报(自然科学版), 2008, 30(2): 87-90.

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System Efficiency Evaluation by Using Viscosity-factor

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