Sedimentary features of the gravity flows in submarine fan of Zhujiang Formation in Baiyun Sag, Pearl River Mouth Basin

  • LIAO Ran
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  • 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Chengdu University of Technology, Chengdu 610059, China; 2. Songnan Oil Production Plant, Northeastern Branch, Sinopec, Changchun 130062, China; 3. CNOOC Research Center, Beijing 100027, China

Online published: 2013-04-20

Abstract

The Zhujiang Formation reservoirs in Baiyun Sag of Pearl River Mouth Basin attained a high degree of attention at home and abroad because of its large scale, typical structures of submarine fan, excellent reservoirs and huge exploration potential. Based on the analysis of various primary sedimentary structures and palaeontology in W and H gas fields, it is believed that the Zhujiang Formation was deposited by submarine fan dominated by debris flows. The submarine fan was divided into three subfacies which were inner fan, middle fan and outer fan, and further divided into channel, inter-channel and lobe microfacies. Many depositional types were identified, which were grain flow, debris flow, proximal and distal turbidity currents. Based on the detailed analysis of the features of various gravity flows and their distributions, the submarine model comprised of “source, drains, and sinks” was established.

Cite this article

LIAO Ran . Sedimentary features of the gravity flows in submarine fan of Zhujiang Formation in Baiyun Sag, Pearl River Mouth Basin[J]. Lithologic Reservoirs, 2013 , 25(2) : 1 -8 . DOI: 10.3969/j.issn.1673-8926.2013.02.001

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