岩性油气藏 ›› 2017, Vol. 29 ›› Issue (4): 64–72.doi: 10.3969/j.issn.1673-8926.2017.04.008

• 油气地质 • 上一篇    下一篇

Fula凹陷中央转换带对岩性油藏勘探的意义——以Abu Gabra组为例

吴冬1,2, 朱筱敏2,3, 刘常妮2, 南征兵4, 史艳丽4   

  1. 1. 中国石化胜利油田分公司 勘探开发研究院, 山东 东营 257015;
    2. 中国石油大学 (北京)地球科学学院, 北京 102249;
    3. 中国石油大学 (北京)油气资源与探测国家重点实验室, 北京 102249;
    4. 中国石油勘探开发研究院 非洲研究所, 北京 100083
  • 收稿日期:2016-09-02 修回日期:2016-11-11 出版日期:2017-07-21 发布日期:2017-07-21
  • 第一作者:吴冬(1987-),男,在站博士后,主要从事层序地层学和沉积学方面的研究工作。地址:(257015)山东省东营市东营区聊城路2号胜利油田勘探开发研究院。Email:lisandpw@163.com
  • 通信作者: 朱筱敏(1960-),男,教授,博士生导师,主要从事沉积学、层序地层学和储层地质学教学和科研工作。Email:xmzhu@cup.edu.cn
  • 基金资助:
    国家油气重大专项课题“岩性地层油气藏沉积体系、储层形成机理与分布研究”（编号：2011ZX05001-002-005）资助

Significance of central transfer zone on lithologic reservoir exploration:a case of Abu Gabra Formation in Fula Sag,Muglad Basin,Sudan

WU Dong1,2, ZHU Xiaomin2,3, LIU Changni2, NAN Zhengbing4, SHI Yanli4   

  1. 1. Research Institute of Exploration and Development, Sinopec Shengli Oilfield Company, Dongying 257015, Shandong, China;
    2. College of Geosciences, China University of Petroleum(Beijing), Beijing 102249, China;
    3. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum(Beijing), Beijing 102249, China;
    4. Department of Africa E & P, PetroChina Research Institute of Petroleum Exploration & Development, Beijing 100083, China
  • Received:2016-09-02 Revised:2016-11-11 Online:2017-07-21 Published:2017-07-21

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摘要： 为了阐明Muglad盆地Fula凹陷Abu Gabra组沉积砂体的分布特征，明确Fula凹陷中央转换带对岩性油藏勘探的意义，利用地震、测井、录井等资料识别典型地震层序和单井层序边界，将Fula凹陷Abu Gabra组划分为5个三级层序，自下而上命名为SQa1~SQa5。在层序格架建立的基础上分析地层厚度分布特征，认为Fula凹陷Abu Gabra组西南厚、东北薄，这种格局的形成与位于Fula凹陷中部的中央构造转换带关系密切；中央构造转换带影响了Abu Gabra组沉积时期的盆地结构、古地貌、沉积相带和层序内部充填，进而影响了Fula凹陷岩性-地层油气藏勘探目标的优选。研究表明，中央转换带北段西侧扇三角洲和浊积体，以及东侧三角洲、南段东侧辫状河三角洲及其前端浊积体、滨浅湖滩坝可作为油气勘探优选目标。

关键词: 烃源岩有机相, 烃源灶, 赛汉塔拉凹陷, 二连盆地

Abstract: In order to demonstrate the distribution of sedimentary sandbodies and effectively guide the exploration and development of lithologic and stratigraphic reservoirs of Abu Gabra Formation in Fula Sag, Muglad Basin, Sudan, under the guidance of the theories and methods of sequence stratigraphy and sedimentology,based on the analysis of seismic and well data, typical seismic sequence boundary and well logging sequence boundary were identified. The formation can be further subdivided into five third-order sequences,which are named as SQa1-SQa5. Based on the sequence framework, the characteristics of formation thickness distribution were analyzed. It is considered that the Abu Gabra Formation is thick in the southwest and thin in the northeast of Fula Sag, which is closely related to the influence of the central transfer zone. The center transfer zone, formed and developed during the sedimentation of SQa1-SQa5, is located in the center of Fula Sag, and it also affects the basin architecture, paleogeomorphology, sedimentary facies zone, sequence filling, and distribution of lithologic and stratigraphic traps. It is revealed that fan delta and turbidite in the west and the normal delta in the east of northern central transfer zone, and braided delta, turbidite and beach bar around the east of southern central transfer zone, are potential exploration targets.

Key words: organic facies of source rocks, source kitchen, Saihantala Sag, Erlian Basin

中图分类号: 

  • TE122.2
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