Reservoir sedimentology of Paleogene Zhuhai Formation in Baiyun Depression
Online published: 2008-12-15
Based on core description, sample and section structure analyses, and petrology characteristics, the sedimentology characteristics of sandstone reservoir of Paleogene Zhuhai Formation in Baiyun Depression are studied, taking BYT well as a representative. The reservoir is divided into two sedimentary systems: marine delta and continental shelf, of which the characteristics are discussed. Two kinds of deltaic sedimentary evolutionary sequences are recognized, including progradation and retrogradation, and the deltaic depositional model of Zhuhai Formation is established. The pore types and reservoir controlling factors are analyzed, and the sandstone reservoir of Zhuhai Formation is divided into four types. Subaqueous dist r ibutary channel is the most favorable facies belt, followed by frontal sheet sand, subaqueous main channel, mouth bar and distal bar. This study on the reservoir sedimentology of BYT well in Pearl River Mouth Basin is of advantage to the exploration of oil and gas resources in South China Sea.
PENG Jingsong , LIU Shugen , ZHAO Xiafei , WU Xichun , YANG Rongjun , SUN Wei , GU Yanwu . Reservoir sedimentology of Paleogene Zhuhai Formation in Baiyun Depression[J]. Lithologic Reservoirs, 2008 , 20(4) : 98 -104 . DOI: 10.3969/j.issn.1673-8926.2008.04.018
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