摘要
抽油机井系统效率反映了油井对能量的利用程度，准确地评价抽油机井系统效率是有效衡量有杆抽油系统性能的关键。根据油井耗能的重新分析，提取了原油粘度、含水率、气油比3个显著的影响因素。利用数据拟合和0～1数值规范化处理方法根据其内在关系把三者整合成综合粘度因子，并通过定义新变量——无因次气油比与效率实现率，构建了抽油机井的系统效率评价模型。得到了系统效率评价图，作为确定抽油机井系统效率理论上、下限的基本方法。提出的模型在某油田进行了初步应用，得到的系统效率与实测效率基本吻合，为下一步是否采取优化措施以及各井的优化顺序提供了理论基础。
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.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2008年第2期87-90,共4页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国石油天然气股份有限公司项目(020114-2-2)
关键词
抽油机井
系统效率
优化
评价图
规范化
rod-pumped well
system efficiency
optimization
evaluation graph
regulation
