高含水期油藏油井开发效果评价  

Evaluation method of producer development effect in high water-cut reservoirs

作　　者：李祯 郭奇 庄天琳[3] 陈硕思 何书梅 LI Zhen;GUO Qi;ZHUANG Tianlin;CHEN Shuosi;HE Shumei(Exploration and Development Research Institute,Shengli Oilfield Company,SINOPEC,Dongying City,Shandong Province,257015,China;Working Station for Postdoctoral Scientific Research,Shengli Oilfield Company,Dongying City,Shandong Province,257000,China;Exploration and Development Research Institute of Dagang Oilfield Company,PetroChina,Tianjin City,300280,China)

机构地区：[1]中国石化胜利油田分公司勘探开发研究院,山东东营257015 [2]中国石化胜利石油管理局有限公司博士后科研工作站,山东东营257000 [3]中国石油大港油田公司勘探开发研究院,天津300280

出　　处：《油气地质与采收率》2022年第2期85-93,共9页Petroleum Geology and Recovery Efficiency

基　　金：国家科技重大专项“特高含水期提高采收率技术”(2011ZX05011),长江学者和创新团队发展计划“复杂油藏开发和提高采收率的理论与技术”(IRT1294)。

摘　　要：为了量化高含水期油藏油井的开发效果,分别从数值模拟和机器学习2个角度建立表征指标,利用数值模拟得到油井控制区域的后向飞行时间,依据单井洛伦兹系数评价油井流动非均质性,并提出潜能指数的概念表征当前时刻油井控制范围内的潜力和驱替能力;收集大量油田开发动态数据建立时间序列模型,利用机器学习中的向量自回归算法对油井生产历史进行拟合,并通过脉冲响应分析评估油井生产能力,最终通过熵权法确定油井综合评价得分。结果表明:2种评价方法虽基于不同假设条件,但所得到的各油井评分趋势基本一致,由于综合考虑了数值模拟和开发动态数据的影响,最终的评价得分可客观反映油井的开发效果。将该评价方法应用于中国G油田Y区块,量化得到各油井的评价得分,并最终确定4口井为高效开发的油井。To quantify the producer development effect in high water-cut reservoirs,we constructed characteristic indexes from numerical simulation and machine learning.The backward flight time of the producer control area was obtained by numerical simulation.The flow heterogeneity of producers was evaluated based on the Lorentz coefficient.The potential index was proposed to describe the potential and displacement capacity of producers in the control area.The copious development performance data of oilfield were collected to establish the time series model.The vector autoregression(VAR)algorithm was used to fit the production history of producers;the production capacity of producers was evaluated through impulse response analysis.The comprehensive evaluation scores of producer were given with the entropy weight method.As a result,the two methods with different assumptions led to similar trends in producer scores.The final score could objectively reflect the development effect of producer with the consideration of the influence of numerical simulation and development performance data.The evaluation method was applied to Y Block of G Oilfield in China to score producers.Eventually,four efficiently developed producers were identified.

关 键 词：向量自回归模型 时间序列 潜能指数 高含水期油藏 开发效果 数值模拟 

分 类 号：TE319[石油与天然气工程—油气田开发工程]