燕山大学学报2011，Vol.35Issue(4)：296-301,308,7.DOI:10.3969/j.issn.1007-791X.2011.04.003
基于系统效率最高的抽油机井合理流压研究
Study of reasonable flowing pressure of rod pumping wells based on maximum system efficiency
摘要
Abstract
It has been a significant issue to calculate the reasonable flowing pressure of the rod pumping wells is the important scientific research subjects in the petroleum engineering and the oil reservoir engineering field. In this paper, the maximum of the system efficiency of the rod pumping unit is taken as the evaluating index of the reasonable flowing pressure, and a method is developed for calculating the reasonable flowing pressure of rod pumping wells. Using this method, five simulating models are set up as follows: 1) the effective power of the rod pumping wells based on the multiphase flow; 2) the input power of the motor based on the simulations the dynamic behaviors of the sucker rod string and the dynamometer cards of the polished rod; 3) the functional relations of the system efficiency with the flowing pressure, oil reservoir parameters and suction parameters; 4) the maximum system efficiency at a given flowing pressure; 5) the relations of the maximum system efficiency with the flowing pressure. The results of simulation show that: 1) the system efficiency of the rod pumping well is greatly affected by the flowing pressure, and the system efficiency can be increased by optimizing the flowing pressure; 2) the oil reservoir parameters of the water content ratio, the gas/oil ratio and the saturation pressure are the major parameters which affect the reasonable flowing pressure.关键词
抽油机井/合理流压/系统效率/最大值/仿真模型Key words
rod pumping well/ reasonable flowing pressure/ system efficiency/ the maximum value/ simulating model分类
建筑与水利引用本文复制引用
董世民,邢明明,张红,柴国红..基于系统效率最高的抽油机井合理流压研究[J].燕山大学学报,2011,35(4):296-301,308,7.基金项目
国家自然科学基金资助项目(50974108) （50974108）
