SN142区块剩余油分析及下步对策研究

摘要

Block SN142 of Qinjiatun oilfield is located in Qinzhong anticline belt, and it has been through four times well pattern perfection and water injection adjustment since 2005. It is generally characterized by high water cut and low oil recovery rate. To solve the problem, it is necessary to carry out quantitative analysis of remaining oil distribution. In this paper, based on reservoir simulation of remaining oil, the injection-production relationship in plane and water drive effect in vertical were analyzed, and finally some measurements for water injection wells and oil production wells were put forward, such as improving water flooding effect, perfecting injection-production relationship, raising water injection intensity and so on. The measurements can effectively increase water-flooding producing reserves and improve oil recovery rate. And for oil wells, the improvement of water flooding effect is more vital.%SN142区块位于秦家屯油田秦中背斜带，自2005年投入开发以来，历经了4次井网完善与注水调整，表现出高含水、低采油速度的主要矛盾，因此需要对剩余油分布进行量化分析。从油藏数值模拟研究剩余油入手，对平面完善注采、纵向改善水驱进行研究，制定出改善水驱、完善注采、提高注水强度等水井措施，以及油井改善水驱效果问题，实现增加水驱动用储量、提高采油速度的目的。