渤海海域渤中凹陷N油田馆陶组沉积特征

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英文篇名：The Sedimentary Characteristics of Guantao Formation in Bohai Sea 作者：别旭伟 ; 程大勇 ; 许赛男 ; 聂玲玲 ; 李浩 英文作者：Bie Xuwei;Cheng Dayong;Xu Sainan;Nie Lingling;Li Hao;Tianjin Branch of CNOOC Ltd.; 关键词：沉积微相 ; 展布特征 ; 贫砂型 ; 馆陶组 ; 渤海海域 英文关键词：sedimentary microfacies;;distribution characteristics;;poor sand;;Guantao Formation;;Bohai Sea 中文刊名：CJDL 英文刊名：Journal of Yangtze University(Natural Science Edition) 机构：中海石油(中国)有限公司天津分公司; 出版日期：2019-05-25 出版单位：长江大学学报(自然科学版) 年：2019 期：v.16;No.249 基金：国家科技重大专项(2016ZX05058001) 语种：中文; 页：CJDL201905002 页数：6 CN：05 ISSN：42-1741/N 分类号：4-5+15-18

摘要

渤海海域渤中凹陷N油田馆陶组开发井实施后,储层厚度减薄,砂地比仅7%,油水关系复杂,开发逐渐陷入停滞。基于油田钻井、测井、地震及生产动态等资料,类比现代沉积,对研究区"贫砂型"馆陶组沉积特征开展研究。结果表明,馆陶组发育近源、快速、高能辫状河沉积,可进一步细分为底部滞留、心滩、辫状河道及泛滥平原等沉积微相类型;平面上,砂体叠置连片分布,河道平均宽度310m,砂体厚度3～4m,心滩砂体长度约1740m,宽1000m,厚度10m。
        After the development wells of Guantao Formation in N Oilfield of Bozhong Sag in Bohai Sea are implemented,the reservoir thickness is thinned,its sand-land ratio is only 7%,and the oilwater relationship is complex.The development of Guantao Formation of N Oilfield is stagnated.Based on the abundant data of drilling,logging,seismic and production in this oilfield,the sedimentary characteristics of"poor sand"Guantao Formation in the study area are studied by analogy with modern sediments.The result show that the Guantao Formation develops near-source,fast and highenergy braided river deposits,it can further identify four kinds of sedimentary microfacies,including bottom lag deposit,diara,braided river channel and floodplain.The sand bodies are overlapping and continuous distribution on the plane.The average width of channel is 310 meters and thickness is3-4 m,meanwhile the length/width/thinkness of braided bar is 1740 m/1000 m/10 mrespectively.

引文

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