摘要
注水开发是提高油田开发效果的主要措施,长期注水对储层物性有较大影响。采用室内实验,测井参数解释及油藏数值模拟方法对渤海S油田的孔隙度、渗透率以及原油的黏度3种主要物性参数进行分析,总结出了注水开发前后储层物性的变化规律。研究认为:经过长期水驱后,油田的平均孔隙半径、平均孔隙度和渗透率整体都有所增加,但表现出两种相反的变化趋势:高渗透储层渗透率增加,大孔隙的数量逐渐增多;低渗透储层孔隙度、渗透率减小。储层这两种相反的变化趋势导致储层非均质性更加严重,储层层间矛盾日益突出。油田原油性质表现出黏度增加,胶质和沥青质含量上升等变差的趋势。通过采取分层酸化、分层调剖以及优化注水的措施,油田取得了较好的增油效果。
Water-injection is a main measure to improve the efficiency of oilfield development,long-term waterinjection has a great influence on the properties of reservoir. Through the analysis of the porosity,permeability, crude oil viscosity of S oilfield,the changes of water flooding and influence between them are compared,on the basis,the rule of the variation of reservoir properties are summarized before and after water injection development,the relationship between dynamic changes of reservoir properties and reservoir production are analyzed. Studies suggest that： after a long period of water flooding,the average pore radius,average porosity and permeability of S oil field have increased,but exhibit two opposite trends： increasing the high permeability reservoir permeability,large pore number increased gradually; reservoir porosity,permeability of low permeability less. The reservoirs of these two opposing trends lead to more serious reservoir heterogeneity,reservoir interlayer contradiction. Crude oil properties showed increased viscosity,resin and asphaltene content increased,the trend of deterioration. By taking layering acidification,stratified injection profile control and optimization measures,S offshore oilfield achieved good effect of increasing oil.
出处
《科学技术与工程》
北大核心
2014年第15期164-168,共5页
Science Technology and Engineering
基金
国家科技重大专项课题(2011ZX05057-001)资助
关键词
S油田
注水开发
储层物性
变化规律
应用
S oil field water-flooding development reservoirs properties variation regularity application
作者简介
胡治华（1982－），男，硕士，地质工程师。研究方向：油气田开发地质研究。E—mail：hudy．hehe@163．com。
