志丹油田S区长2油藏开发调整研究

Zhidan Oilfield S District Chang 2 reservoir development adjustment study

志丹油田对S区长2主力油层实施小层划分,作出各小层单砂体的分布图,并对沉积环境和沉积微相实施研究分析,指出油气聚集的有利相带。结合油田生产动态资料,预测S区剩余油分布规律,完善注采井网,在地层能量恢复区域对低产低效井措施改造,遏制主力油层快速水淹,提高单井产量,采出程度及最终采收率。

Block S of Zhidan Oilfield is located in Shuanghe Town,Zhidan County,Shaanxi Province.In this paper,the main oil layer of Chang 2 in Block S is divided into small layers,and the distribution map of single sand bodies in each small layer is made.The sedimentary environment and sedimentary microfacies are studied and analyzed,and the favorable facies belt for oil and gas accumulation is pointed out.Based on the dynamic production data of the oilfield,predict the distribution pattern of remaining oil in Zone S,improve the injection and production well network,reform measures for low production and low efficiency wells in the area of formation energy recovery,curb rapid water flooding of the main oil layers,and improve single well production,recovery degree,and final recovery rate.