裂缝性低渗透油藏合理注水开发对策研究  

Reasonable strategies of water-flooding development in fractured low permeability reservoir

作　　者：全洪慧[1,2,3] 朱玉双 张章[3] QUAN Hong - hui;ZHU Yu - shuang;ZHANG Zhang(State Key Laboratory of Continental Dynamics, Northwest University, Xi~an 710069;Department of Geology, Northwest University, Xi＇an 710069;CNOOC Tianjin Branch, Tanggu 300452, China)

机构地区：[1]西北大学大陆动力学国家重点实验室,陕西西安710069 [2]西北大学地质学系,陕西西安710069 [3]中海石油(中国)有限公司天津分公司,天津300452

出　　处：《地下水》2018年第2期90-92,124,共4页Ground water

基　　金：国家重大科技专项:"海上油田丛式井网整体加密及综合调整油藏工程技术示范"(2011ZX05057-001)

摘　　要：鄂尔多斯盆地西峰油田白马中区延长组长8油藏是典型的裂缝性低渗透油藏,极高的储层非均质性和复杂的油水运动规律给注水开发方案制定带来较大困难。本次研究以生产动态分析和数值模拟为主要手段,针对注水开发中出现的矛盾与问题提出相应的解决方案和技术政策,为油田的有效开发提供科学依据。研究表明该油田在注水开发中存在三大矛盾,即注采井网与裂缝系统之间的矛盾,地层压力与单井产能之间的矛盾以及含水上升与注水参数之间的矛盾。研究结果认为深部调剖、高含水井转注、周期注水、优化注采参数、局部井网加密等开发政策的调整可以有效缓解上述矛盾。The reservoir of Chang-8 formation in Bai Mazhong block,Ordos Basin is a typical fractured low permeability reservoir. Fractured low permeability sandstone reservoirs with high permeability heterogeneity and complex rules of movement of injection water are different from ordinary sandstone reservoirs,and become one of the most important types of reservoir in Erdos Basin,China. If the water flooding development policy is not appropriate,easy to cause the injected water channeling along the fractures,water cut oil well rate to rise,even flooding,ultimately affect the recovery and development effect. The severe reservoir heterogeneity and complicated oil-water moving rules are great difficult problems for development plan of injection.Base on the study of production performance analysis and numerical simulation,solutions and technology policy are proposed aimed at the contradictions and problems in the water flooding process,which provide a scientific basis for effective oil exploitation in the future.The study shows that there are three contradictions in the water flooding process：the contradiction between well pattern and fracture system,the contradiction between formation pressure and individual well productivity,water cut increasing and water-injection parameters.The result indicated that these contradictions reconciled can be reconciled by deep profile control,converting water injection in high water-cut well,cyclic water-flooding,injection-production parameter optimization,partial well pattern infilling.

关 键 词：裂缝性低渗透油藏 注水开发 深部调剖 周期注水 西峰油田 鄂尔多斯盆地 

分 类 号：P618.130.21[天文地球—矿床学]