注水诱导动态裂缝影响下低渗透油藏数值模拟  

Low Permeability Reservoir Numerical Simulation by Considering Water-injection Induced Dynamic Fractures

作　　者：范天一[1,2] 吴淑红[2,3] 李巧云[2,3] 王宝华[2,3] 

机构地区：[1]北京大学,北京100871 [2]中油勘探开发研究院,北京100083 [3]提高石油采收率国家重点实验室,北京100083

出　　处：《特种油气藏》2015年第3期85-88,155,共4页Special Oil & Gas Reservoirs

基　　金：北京市重大科技成果转化落地培育项目"陆相沉积油藏数值模拟系统研制"(z121100004912001);中国石油天然气股份有限公司科学研究与技术开发项目"新一代油藏数值模拟软件3.0版研制"(2011A-1010);中国石油天然气股份有限公司科学研究与技术开发项目"大港油区大油气田勘探开发关键技术研究"(2014E-06-04)

摘　　要：针对低渗透油藏水驱开发过程中产生动态裂缝的现象,基于对大量地质资料、生产动态资料及室内实验资料的分析总结,认识了动态裂缝的形成机理,建立了可以描述动态裂缝的新模型,并编制了油藏数值模拟软件。通过数值模拟运算,研究了动态裂缝条件下低渗透油藏的合理井网形式。结果表明,采用九点井网进行开发,且动态裂缝方向与井排方向呈45°时,可以最大限度地降低动态裂缝所造成的油井水淹等负面影响。该研究为动态裂缝影响下低渗透油藏水驱开发井网设计提供了理论依据。Dynamic fractures are induced during waterflooding development of low permeability oil reservoir. Based on the analysis and summary of a large amount of geological data,dynamic production data,and laboratory experiment data,formation mechanism of dynamic fractures is obtained,new model which could describe dynamic fractures is established,and the corresponding numerical simulation software is developed. By numerical simulation calculation,reasonable well patterns of low permeability oil reservoir with dynamic fractures are studied. The research results show that when developing by nine-spot well pattern and the dynamic fracture direction is 45 degree with well drainage direction,the negative impact of dynamic fractures such as water-out can be minimized.This research provides the theoretical basis for well pattern design of low permeability reservoir waterflooding development under the influence of dynamic fractures.

关 键 词：低渗透油藏 动态裂缝 油藏数值模拟 井网形式 

分 类 号：TE348[石油与天然气工程—油气田开发工程]