基于代理模型的复杂结构井热采产能评价方法  

Productivity Calculation Method for Complex Structure Well Thermal Recovery Based on Surrogate Model

作　　者：祝金利 李俊键[2] 周元龙[3] 秦杰 桑国强[2] 

机构地区：[1]中国石油长城钻探工程有限公司,北京朝阳100101 [2]中国石油勘探开发研究院,北京海淀100083 [3]中国石油大学石油工程教育部重点实验室,北京昌平102249 [4]中国石油大庆油田有限责任公司第八采油厂生产运营部,黑龙江大庆163514

出　　处：《西南石油大学学报（自然科学版）》2013年第3期124-130,共7页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：长城钻探重大技术攻关科研项目(2010-GG-06);长城钻探重点技术攻关科研项目(2010-GG-08)

摘　　要：复杂结构井是开采稠油油藏的重要手段,其产能计算一直是评价工作的重点。针对辽河油区复杂结构井实施情况,从油层厚度、油层渗透率、分支井长度、分支数目、分支间距、分支与水平段夹角、注汽量、注汽速度、注汽干度、焖井时间等10个方面对复杂结构井产能的影响因素进行了综合分析。在此基础上,利用响应面方法建立了复杂结构井产能的代理模型,提出了预测复杂结构井产能新方法,并将该方法运用于辽河油田某区块的复杂结构井,计算的产能与实际产能误差较小,平均为8.5%。Complex structure well is an important way of developing heavy oil reservoirs, and its productivity calculation has always been the key point of the evaluation. In view of the implementation of complicated structure well in Liaohe region, ten influence factors on the productivity of complex structure wells, such as reservoir thickness, reservoir permeability, branch length, branch number, branch space, branch angle, stem inj ection rate, steam quality, soak time, cyclic steam injection volume are evaluated and analyzed. On this basis, we established a surrogate model of complex structure well productivity by using response surface method, and presented a new method of evaluating the productivity of complex structure well. This method was applied to wells in Liaohe region, the actual production is quite close to the computing productivity with the average value 8.5%.

关 键 词：复杂结构井 蒸汽吞吐 影响因素 代理模型 产能 

分 类 号：TE345[石油与天然气工程—油气田开发工程]