摘要
针对普光气田长兴组礁滩体分布规律认识不清楚、台缘礁气水关系复杂的问题,开展了长兴组礁滩体地震识别及台缘礁内幕精细刻画工作。通过井震精细标定,明确了礁滩体储层地震响应特征,利用多属性分析等手段对长兴组礁滩体进行宏观识别,结合最新古地貌恢复结果分析了礁滩体平面展布规律;利用瞬时相位与波阻抗反演结果对台缘生物礁群的内幕结构进行了精细刻画,并结合生产动态资料分析了单礁体储层的连通性。结果表明:长兴组发育台缘礁群与台内礁滩复合区2类礁滩体,礁滩复合区的分布受到台缘礁间水道控制,宽水道对应礁滩复合区面积大,窄水道对应礁滩复合区面积小,平面上呈近似扇形分布;台缘礁群在长兴组中上部可识别2期次50个单礁体,呈现5类不同的叠加发育模式,并且2期次的单礁体储层互不连通,同一期次侧向叠置的单礁体储层普遍连通。研究结果对普光气田长兴组下步勘探及开发具有一定指导意义。
In order to solve the problems of unclear distribution law of reef-shoal bodies and complex gas and water relationship in platform margin reefs in Changxing Formation of Puguang Gas Field,seismic identification of reef-shoal bodies and fine characterization of platform margin reefs are carried out.Through fine well-seismic calibration,the seismic response characteristics of reef-shoal bodies are defined,and the reef-shoal bodies in Changxing Formation is identified macroscopically by means of multi-attribute analysis,and the plane distribution law of reef-shoal bodies is analyzed based on the latest paleo-geomorphology recovery results.The inner structure of the platform edge reef group was described by instantaneous phase and wave impedance inversion,and the connectivity of the single reef was analyzed based on the dynamic production data.The results show that there are two types of reef-shoal bodies in Changxing Formation,namely the platform edge reef group and intra-platform reef-shoal complex area.The distribution of reef-shoal complex area is controlled by the channel between the reef and the platform edge.The wide channel corresponds to a large reef-shoal complex area,while the narrow channel corresponds to a small reef-shoal complex area,wihch shows fan-shaped distribution in plane.A total of 50 single reefs in two stages can be identified in the middle and upper part of Changxing Formation,showing 5 types of different superimposed development patterns.And the single reef reservoirs in two stages are not connected,while the single reef reservoirs superposed laterally in the same stage are generally connected.The research results have certain guiding significance for the next exploration and development of Changxing Formation in Puguang Gas field.
作者
付东阳
汪功怀
彭鑫岭
杜浩坤
刘忠亮
张渊
程杨
李娜
FU Dongyang;WANG Gonghuai;PENG Xinling;DU Haokun;LIU Zhongliang;ZHANG Yuan;CHENG Yang;LI Na(Geophysical Research Institute,Zhongyuan Oilfield Company,SINOPEC,Puyang 457001,China;Puguang Branch,Zhongyuan Oilfield Company,SINOPEC,Dazhou 635000,China)
出处
《断块油气田》
CAS
CSCD
北大核心
2023年第6期975-981,共7页
Fault-Block Oil & Gas Field
基金
中国石化集团公司科研项目“普光复杂山地高精度地震勘探技术研究”(P21003)。
关键词
古地貌
台地边缘
生物礁
储层连通性
长兴组
普光气田
paleogeomorphology
platform edge
organic reef
reservoir connectivity
Changxing Formation
Puguang Gas Field
作者简介
第一作者:付东阳,男,1988年生,高级工程师,2010年毕业于长江大学地质学专业,现从事油气田勘探开发工作。E-mail:328604754@qq.com。
