深水浊积储层注气开发油藏流动单元划分及剩余油挖潜研究  

Study on flow unit division and remaining oil tapping in deep-water turbidite gas injection reservoir

作　　者：陈筱 肖鹏 段瑞凯 吕文睿 张昕 陈国宁 CHEN Xiao;XIAO Peng;DUAN Ruikai;LYU Wenrui;ZHANG Xin;CHEN Guoning(CNOOC International Ltd.,Beijing 100028,China;CNOOC Research Institute Co.,Ltd.,Beijing 100028,China)

机构地区：[1]中国海洋石油国际有限公司,北京100028 [2]中海油研究总院有限责任公司,北京100028

出　　处：《非常规油气》2023年第3期103-111,共9页Unconventional Oil & Gas

基　　金：中国海洋石油有限公司科研项目“西非水道型浊积储层连续性及井网适应性研究”(YXKY-2019-ZY-07)。

摘　　要：为了明确深水浊积储层注气开发油藏流动单元分布及剩余油挖潜方向,以A油田K油藏浊积朵叶为例,综合分析沉积相、构造、断裂、储层构型、隔夹层、储层品质、开发方式以及井型井网等动静态资料,探讨了朵叶注气开发油藏的流动单元划分及剩余油分布。研究表明:1)浊积朵叶横向连片分布,纵向叠置连通,储层品质及连通性较好;2)将靶区划分为8个流动单元(2个受断层和井网控制,4个受到断层和相带的控制,2个受相带及动态影响),整体上东部以断层控制为主,西部以相带及井网控制为主;3)研究区剩余油富集区主要分布在东部单元5和单元7、西部单元2和单元8,东部剩余油潜力整体优于西部;4)单元7为一级潜力目标,剩余油地质储量大于10百万桶,是部署调整井的优选目标;单元5为二级潜力目标,剩余油地质储量为5~10百万桶,可考虑作为调整井接替目标;单元2和单元8为三级潜力目标,剩余地质储量小于5百万桶,可考虑邻近单元联合部署调整井、邻井侧钻方式提高区域开发效果。以上成果认识,对浊积朵叶注气油藏高效开发具有重要的借鉴价值。This paper takes A deep-water turbidite oilfield K lobe reservoir as an example to discuss the developing flow unit division and remaining oil distribution of the deep-water turbidity gas injection reservoir.Both dynamic and static data were considered,such as sedimentary facies,structure,fracture,reservoir configuration,interlayer,reservoir quality,development mode and well pattern.The research shows that:1)Turbidite lobes are distributed horizontally and overlapped vertically,and the reservoir quality and connectivity are good;2)The target area was divided into 8 flow units(2 controlled by faults and well patterns,4 controlled by faults and facies,and 2 affected by facies and dynamics).As a whole,the eastern part was dominated by faults and the western part was dominated by facies and well patterns;3)The remaining oil rich areas are mainly distributed in Unit 5 and Unit 7 in the east,and Unit 2 and Unit 8 in the west.The remaining potential in the east is better than that in the west;4)Unit 7 is the primary potential target with more than 10 MMbbls of remaining resource,which is the preferred target for adjustment wells;Unit 5 is a secondary potential target with 5 to 10 MMbbls of remaining resource,which can be considered as a replacement target for the adjustment well.Unit 2 and Unit 8 are tertiary potential targets with remaining resource of less than 5 MMbbls.Joint deployment of adjustment wells and sidetracking can be considered in adjacent units to improve regional development effect.The above results have important reference value for efficient development of turbidite gas injection reservoir.

关 键 词：深水浊积朵叶 挥发性油藏 注气开发 流动单元 剩余油 

分 类 号：TE122[石油与天然气工程—油气勘探]