抽油机井区块整体节能参数仿真优化方法  

Simulation and optimization method for the integral energy-saving suction parameters of rod pumping wells in an oilfield

作　　者：董世民[1] 张喜顺[1] 吴长杰[1] 郭吉民[2] 

机构地区：[1]燕山大学机械工程学院,河北秦皇岛066004 [2]华北油田采油工艺研究院,河北任丘062552

出　　处：《石油学报》2010年第3期475-479,共5页Acta Petrolei Sinica

基　　金：国家自然科学基金项目(No.50974108)资助

摘　　要：应用多相流理论计算了抽油泵的沉没压力和排出压力,改进了抽油杆柱轴向振动底部边界条件的仿真模型,完善了抽油机井有效功率、电动机输入功率与抽油系统效率的仿真模型。以抽油系统输入功率最低为优化设计的目标函数,优化了单井不同产量条件下的最佳抽汲参数及所对应的最低输入功率,建立了单井最低输入功率与产量之间的回归模型。以该模型为基础,将单井产量作为优化设计变量,考虑区块整体的原油计划产量约束,建立了以区块整体输入功率最低为目标的区块整体优化设计模型。综合单井与区块整体的优化设计结果,优选出整体区块内各个单井的最佳产量以及所对应的最佳抽汲参数。计算实例表明,与单井优化设计结果比较,利用区块整体优化方法可以进一步降低区块整体的总耗电量。实际算例表明,采用区块整体优化抽油系统的方法,输入功率可以减少16.7%。The submergence and the discharge pressure of oil well pump were calculated on the basis of the multiphase flow theory.The bottom boundary conditions of the axial vibration of rod string were improved,the simulating models for the effective power,the input power of motors and the system efficiency were perfected.Taking the least input power of suction system as the objective function of optimization design,the suction parameters were optimized under the condition of different output yield of single oil well,and the regression models were set up for describing the relationship between the least input power and the output of single well.The output of single well was taken as the variable of optimization design,and the integral energy-saving optimization model in an oilfield was established in consideration of the restraint condition.By synthesizing the optimization design results of single well and the integral optimization design results,the optimal output and suction parameters of all wells in an oilfield can be obtained.The actual optimizing examples showed that the total power consumption of all wells in an oilfield was less by 16.7% using the parameters designed by the integral optimization method than that using the parameters designed by the single optimization method.

关 键 词：抽油机井 整体区块 最低能耗 抽汲参数 优化设计 仿真模型 

分 类 号：TE833[石油与天然气工程—油气储运工程]