Lithologic Reservoirs ›› 2017, Vol. 29 ›› Issue (4): 64-72.doi: 10.3969/j.issn.1673-8926.2017.04.008

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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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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

CLC Number: 

  • TE122.2
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