珠江口盆地白云凹陷珠江组海底扇深水重力流沉积特征
网络出版日期: 2013-04-20
基金资助
国家重大科技专项“深水扇储层层序地层和沉积模式研究”(编号:2008ZX05056-02-02)部分研究成果
Sedimentary features of the gravity flows in submarine fan of Zhujiang Formation in Baiyun Sag, Pearl River Mouth Basin
Online published: 2013-04-20
廖然 . 珠江口盆地白云凹陷珠江组海底扇深水重力流沉积特征[J]. 岩性油气藏, 2013 , 25(2) : 1 -8 . DOI: 10.3969/j.issn.1673-8926.2013.02.001
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.
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