考虑工程设施约束的海上油田群产液结构优化模型及其应用  

Liquid production structure optimization model of offshore oilfield group under engineering facility constraints and its application

作　　者：王守磊 安桂荣 耿站立 张伟 WANG Shoulei;AN Guirong;GENG Zhanli;ZHANG Wei(China University of Geosciences,Beijing 100083,China;CNOOC Research Institute Co.,Ltd.,Beijing 100028,China)

机构地区：[1]中国地质大学(北京),北京100083 [2]中海油研究总院有限责任公司,北京100028

出　　处：《中国海上油气》2018年第5期96-102,共7页China Offshore Oil and Gas

基　　金："十三五"国家科技重大专项"中海油油气开发发展战略研究(编号:2016ZX05016-006-006)"部分研究成果

摘　　要：海上油田群进入高含水期后单井产液量增大,而工程设施处理和外输能力有限,在现有工程设施约束下合理分配油井产液量,优化油田群产液结构,对于改善油田开发效果具有重要意义。本文考虑各个平台及整个油田群生产设施处理和外输能力,采用广适水驱特征曲线对单井开发指标进行预测,以净现值(NPV)最大化作为优化目标函数,建立了海上油田群产液结构优化模型。利用增广拉格朗日函数法,将约束优化模型转化为无约束优化模型,然后采用G-SPSA算法最大化增广拉格朗日函数,实现无约束优化模型的求解。油田群应用结果表明,本文方法能够有效改善油田开发效果,对高含水期油田群挖潜具有一定的指导意义。After entering the high water cut stage,the offshore oilfield group will experience an increase on single well liquid production.However,engineering facilities have limited treatment and external transportation capacity.Under the existing engineering facility constraints,how to well allocate the liquid production of oil wells and optimize the liquid production structure of oilfield group will be of great significance for enhancing the development effect of oilfields.This paper proposed one liquid production structure optimization model of offshore oilfield group through taking into consideration the treatment and external transportation capacity of production facilities of all platforms and whole oilfield group,which uses the general water flooding characteristic curve to predict the development index of single well and takes the Net Present Value(NPV)maximization as the optimized objective function.By using the Augmented Lagrange function method,the constrained optimization model was transformed into an unconstrained optimization model,and then the G-SPSA algorithm was used to maximize the Augmented Lagrange function,and to solve the unconstrained optimization model.The field applications prove that this method can effectively improve the development effect of oilfields,and provide guidance for the potential tapping of high water cut oilfield group.

关 键 词：海上油田群 产液结构优化模型 生产设施约束 广适水驱特征曲线 增广拉格朗日 G-SPSA算法 

分 类 号：TE32[石油与天然气工程—油气田开发工程]