哈南油田阿尔善组油藏剩余油分布规律及开发对策

哈南油田阿尔善组油藏是一断层发育、构造复杂破碎的多层油藏，其油藏流体类型属于黑油．该油藏 １９８９ 年 ６ 月正式投入早期注水开发，经历了三次大的调整（层系细分） 和不断加密、完善井网，至 １９９７ 年 １２ 月，基本形成了四套较完善的独立井网注采四套层系的局面，综合含水率已达 ６４％ ，而采出程度仅为 １６％ ，稳产难度越来越大．针对这种局面，利用三维三相黑油模型对哈南油田阿尔善组油藏８ 年半（到１９９７ 年１２ 月底）的开发历史分断块进行了精细历史拟合，纵向上深入到了小层，得到了 ４０ 个小层的剩余油分布规律及其影响因素，并在此基础上分层系提出了进一步挖潜的调整对策．

Remaining Oil Distribution Law of Aershan Formation in Hanan Oil Field and Measures for the Development of It

Aershan formation in Hanan Oil Field is a multilayer reservoir whose fault is very developed and structure is complicated and fragmental. Its reservoir fluid is black oil. It had get into the early stage of water injection development in June of 1989. By December of 1997, it had had 4 well patters for 4 series of strata, its water cut had reached 64%, and recovery factor is only 16%. So it becomes more and more difficult to maintain a long term stable oil production. For this reason, the fine fits of eight years and half development history of each fault block and each series of strata are made by 3D 3P black oil model, and remaining oil distribution maps of 40 substrata are get. The factors are studied influencing the remaining oil distribution. On the basis of above, the measures are proposed for the adjustment of its development project.