T3断块油藏开发数值模拟研究

RESEARCH ON NUMERICAL SIMULATION OF T3 FAULT BLOCK OIL RESERVOIR EXPLOITATION

T3断块油藏是边底水复合油藏,到目前仍然以天然能量开采。对该油藏流体高压PVT实验数据进行拟合计算,确定了适合描述该油藏流体相态行为的流体组分特征参数;利用地质研究成果对T3断块油藏建立了相应的三维地质模型,在此基础上进行了初始化拟合;对该油藏的生产历史数据进行历史拟合研究,总结了该油藏的剩余油分布规律;从几个方面对该油藏的开发技术指标进行了数值模拟研究,得到了该油藏的合理开发技术指标;结合油藏实际生产情况制定了综合调整方案,使油藏在较长稳产年限的条件下,油藏可以保持较高的采油速度,所得的研究结论有利于指导该油藏实际开发生产。

The T3 fault block oil reservoir has been drived by edge water and bottom water and it is also in the natural depletion phase nowadays. The characteristic parameter of fluid components,which is suitable for describing fluid phase,is determined through the fitting calculation of experimental high- pressure PVT data of T3 fault block oil reservoir fluid. According to the result of geology research,the three- dimensional geological model of T3 fault block oil reservoir is built. Based on geological model,the initialization match is completed.The study of oil reservoir production history match is made,obtaining satisfactory result and cognizing distribution rules of remaining oil. Research on numerical simulation in the several aspects of this oil reservoir is completed and the reasonable exploitation strategy parameter is obtained. Combining with realistic situation of oil reservoir development,the comprehensive adjusting measures is established. The comprehensive adjusting measures can keep period of stabilized production longer in high oil production rate. The study result can provide a reliable instruction for the oil reservoir exploitation.