摘要
在致密油藏注水开发过程中,由于压力场和应力场的变化引起注水井人工裂缝的开启闭合,会对注水效果产生重要影响。定量表征注水井裂缝的动态变化是注水开发致密油藏的关键。文中提出了将不同裂缝参数下油藏数值模拟的生产动态数据代入油藏容阻模型,获得不同的注采井井间连通性数据,并建立了裂缝参数与连通系数的支持向量回归代理模型的方法。利用该方法对反五点井网注水井动态裂缝变化特征进行分析,结果表明:建立的代理模型对裂缝参数的预测误差较小,为致密油藏注水开发中裂缝动态变化分析提供了简单快速的方法。
In the process of water flooding development of tight reservoir,the opening and closing of artificial fractures in water injection wells caused by the change of pressure field and stress field has an important impact on water injection effect.Quantitative characterization of dynamic changes of fractures in water injection wells is the key to water flooding of tight oil reservoir.In this paper,the production performance data of reservoir numerical simulation under different fracture parameters are brought into the reservoir capacitance resistance model,and the different connectivity data of injection and production wells are obtained,and the support vector regression surrogate model of fracture parameters and connectivity coefficient is established.The method in this paper is used to analyze the dynamic fracture characteristics of water injection wells in reverse five point pattern.The results show that the error of prediction results of fracture parameters by the established surrogate model is small.This model provides a simple and rapid method for the analysis of fracture dynamic change in water flooding development of tight oil reservoir.
作者
曾庆桥
张亮
刘萍
王哲
王链
赵良言
李治平
ZENG Qingqiao;ZHANG Liang;LIU Ping;WANG Zhe;WANG Lian;ZHAO Liangyan;LI Zhiping(Research Institute of Exploration and Development,Huabei Oilfield Company,PetroChina,Renqiu 062552,China;Chengdu North Petroleum Exploration and Development Technology Co.,Ltd.,Chengdu 610051,China;School of Energy Resources,China Universityof Geosciences,Beijing 100089,China;No.5 Oil Production Plant,Huabei Oilfield Company,PetroChina,Xinji 052300,China)
出处
《断块油气田》
CAS
CSCD
北大核心
2022年第3期383-389,共7页
Fault-Block Oil & Gas Field
基金
中国石油天然气股份有限公司重大科技专项“华北油田持续有效稳产勘探开发关键技术研究与应用”课题七“华北油田三次采油提高采收率技术研究”(2017E-1507-3)。
关键词
注水开发
动态裂缝
容阻模型
数值模拟
代理模型
water flooding development
dynamic fracture
capacitance resistance model
numerical simulation
surrogate model
