Volume 37 Issue 4
Jul.  2012
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YU Shui, CHENG Tao, CHEN Ying, 2012. Depositional Characteristics of Deepwater Systems in the Niger Delta Basin. Earth Science, 37(4): 763-770. doi: 10.3799/dqkx.2012.085
Citation: YU Shui, CHENG Tao, CHEN Ying, 2012. Depositional Characteristics of Deepwater Systems in the Niger Delta Basin. Earth Science, 37(4): 763-770. doi: 10.3799/dqkx.2012.085

Depositional Characteristics of Deepwater Systems in the Niger Delta Basin

doi: 10.3799/dqkx.2012.085
  • Received Date: 2012-02-21
    Available Online: 2021-10-13
  • Publish Date: 2012-07-15
  • The research of deepwater sedimentary systems in the Niger Delta basin is one of the key issues in hydrocarbon exploration in the world. According to the analysis of 3D seismic data, well, core, sedimentary structure and logs characters, depositional characteristics of deepwater systems are discussed on Neocene in the south of Niger Delta basin. Sequence stratigraphic framework is established based on identification of sequence boundary and 6 third-order sequences are divided and named as SQ1-SQ6. The depositional models of deepwater sedimentary systems are established. Three kinds of depositional facies are identified in the deepwater sedimentary systems, namely, turbidite channel, submarine lobe and hemipelagic mudstones. Channel only has few branches that are highly sinuous, with morphology similar to that of meandering river; submarine lobes can be divided into terminal lobe and crevasse splay lobe. During the Neocene deposition from the SQ1 to the SQ6, relative sea level firstly fell and then rose, submarine lobe facies developed in the SQ1-SQ4 and turbidite channel facies developed in the SQ5-SQ6.

     

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