深水断陷盆地层序地层分析与岩性-地层油气藏预测——以中国南海C盆地深水区古近系T组为例

英文篇名：Sequence stratigraphy analysis and lithologic-stratigraphic reservoir predication in deepwater faulted basins——an example from the Paleogene T Formation of the deepwater C Basin in South China Sea
中文刊名：石油与天然气地质
英文刊名：Oil & Gas Geology
作者：陈欢庆 ; 朱筱敏 ; 董艳蕾 ; 李烨 ; 廖飞燕
英文作者：Chen Huanqing1 ; Zhu Xiaomin2 ; Dong Yanlei2 ; Li Ye2 ; Liao Feiyan2(1.PetroChina Exploration and Development Research Institute ; Beijing 100083 ; China ; 2.State Key Laboratory of Hydrocarbon Resources and Prospecting ; China University of Petroleum ; Beijing 102249 ; China)
中文关键词：地震相 ; 成藏模式 ; 层序地层 ; 岩性-地层油气藏 ; 深水区 ; 断陷盆地
英文关键词：seismic facies ; reservoiring mode ; sequence stratigraphy ; lithologic-stratigraphic reservoir ; deepwater area ; faulted basin
出版日期：2009-10-28
机构：中国石油天然气股份有限公司勘探开发研究院;中国石油大学油气资源与探测国家重点实验室;
年：2009
期：05
出版单位：石油与天然气地质

摘要

依据Vail经典层序地层学理论,充分结合多井浅水区和无井深水区地质、地球物理资料,提出浅水区钻井资料与深水区地震资料井-震结合验证对比的思路,对中国南海C盆地深水区古近系T组进行层序地层精细划分。结果表明,该思路可成功解决深水区地层-地震资料品质差、无井资料、断层复杂、高温高压造成地层破碎层序界面不明显、追踪对比困难等难题,建立研究区目的层三维等时层序地层格架。研究中将T组划分为4个三级层序,并在等时层序地层格架内识别出辫状河三角洲、扇三角洲、下切谷、盆底扇、浊积扇、滩坝及滨岸砂7种沉积砂体类型。这些特征砂体与广泛分布的海侵体系域泥岩在空间上形成单断式、多断式和斜坡式3种成藏模式,形成了众多的岩性-地层油气藏。
Guided by Vail's classical theory of sequence stratigraphy,the authors proposed to finely divide the Paleogene T Formation of the deepwater C Basin in South China Sea by tying wells in the shallow water area to the seismic sections in deepwater area.The results show that the proposed method works effectively in dealing with such problems as poor seismic data quality,lack of well data,complexities of faults,vague sequence boundaries caused by high temperature and high pressure,difficulties in stratigraphic tracing and correlation,and so on.By using the method,the authors also established fine three-dimensional isochronous stratigraphic sequence framework of the study area,divided the T Formation into four third-order sequences,and recognized seven kinds of sandbodies:braided deltas,fan deltas,incised valley,basin floor fan,turbidite fan,beach bar and shore sands.These sandbodies together with widely distributed mudstones of TST formed many lithologic-stratigraphic reservoirs in three kinds of accumulation mode:single fault,multiple fault,and slope.

引文

1王春修.国外深水油气勘探动态及经验[J].中国海上油气(地质),2002,16(2):141～144
    2Loucks R G,Ruppel S C.Mississippian Barnett Shale:lithofacies and depositional setting of a deep-water shale-gas succession in the Fort Worth Basin,Texas[J].AAPG Bulletin,2007,91(4):579-601
    3金春爽,乔德武,姜春艳.国内外深水区油气勘探新进展[J].海洋地质动态,2003,19(10):20～23
    4Henry S P,Paul W.Deepwater remains immature frontier offshore,the newprospecting targets of northern continental Margin of South China Sea[J].Acta Petrolei Sinica,2007,62(10):48-50
    5张功成,米立军,吴时国.深水区——南海北部大陆边缘盆地油气勘探新领域[J].石油学报,2007,28(2):15～21
    6戴金星,胡安平,杨春,等.中国天然气勘探及其地学理论的主要新进展[J].天然气工业,2006,26(12):1～5
    7陈斯忠,宋建民,陈伟煌.对海上找气的思考[J].中国海上油气(地质),2003,17(3):153～159
    8龚再升.中国近海大油气田[M].北京:石油工业出版社,1997.1～198
    9石世革.黄骅坳陷板桥凹陷古近系沙一段中部层序地层学研究与岩性油气藏勘探[J].石油与天然气地质,2008,29(3):320～325
    10赵贤正,卢学军,王权.华北油田地层-岩性油藏勘探发现与启示[J].石油与天然气地质,2007,28(5):597～604
    11陈洪德,倪新锋,田景春,等.华南海相下组合层序地层格架与油气勘探[J].石油与天然气地质,2006,27(3):370～377
    12张万选,张厚福,曾洪流,等.陆相地震地层学[M].山东东营:石油大学出版社,1993.1～43
    13孙家振,李兰斌.地震地质综合解释教程[M].武汉:中国地质大学出版社,2002.21～140
    14焦翠华,王海更,牛玉杰,等.塔里木盆地哈得4油田东河砂岩层序地层界面类型及测井识别方法[J].石油与天然气地质,2007,28(1):69～76
    15朱筱敏.层序地层学[M].山东东营:石油大学出版社,2000.1～38,108～203
    16Levorson A I.Stratigraphic versus structural accumulation[J].AAPG Bulletion,1936,20(1):521-530
    17项华,徐长贵.渤海海域古近系隐蔽油气藏层序地层学特征[J].石油学报,2006,27(2):11～15
    18王英民.对层序地层学工业化应用中层序分级混乱问题的探讨[J].岩性油气藏,2007,19(1):9～15