对任丘潜山剩余油分布的新认识

根据任丘古潜山油藏任观６井１９８０年至１９９５年１５年时间内６次深侧向电阻率时间推移测井资料，结合该油藏先期注水、后期降压开采的生产实际进行了系统的分析解释，对潜山内部剩余油分布规律得到了一些新认识：（１）致密层遮挡的微细裂缝发育段油气可以重新聚集；（２）岩块自吸驱油过程是一个漫长的历史阶段；（３）降压开采措施的实施加速了潜山内部油气的再聚集；（４）阻隔层遮挡的内幕高部位可能形成剩余油富集区

New recognition for remaining oil distribution in Renqiu buried hill

Six deep lateral resistivity time lapse logs were implemented over fifteen years from 1980 to 1995 in well Ren Guan 6 in Renqiu buried hill oil reservoirs. On the basis of these data and actual situation of development by water injection in the early stage, and development by decreasing pressure in the late stage, new knowledge on the distribution of remaining oil within Renqiu buried hill has been obtained as follows: (1) hydrocarbon can re accumulate in the micro fissures screened by tight beds, (2) oil displacement by self imbibition of the rock is a long history, (3) the implementation of development by decreasing pressure accelerated the re accumulation of oil and gas in the buried hill, (4) the inner high screened by intercalation may form an enriched area of remaining oil.