›› 2014, Vol. 35 ›› Issue (6): 1-1.

   

Characteristics and Controlling Factors of Meishan DeepWater Fans in Lingshui Sag, Qiongdongnan Basin

WANG Yahui1, ZHANG Daojun1, CHEN Yang1, HE Weijun1, HAO Defeng1, ZHAO Pengxiao2, ZUO Qianmei1   

  1. (1.Zhanjiang Branch, CNOOC, Zhanjiang, Guangdong 524057, China; 2.Zhanjiang Central Laboratory, Research Institute of Drilling and Production Engineering, CNOOC Energy Development Co., Ltd, Zhanjiang,Guangdong 524057, China)
  • Online:2019-01-01 Published:1905-07-15

Abstract: The 3D seismic data, drilling and core sample data form Lingshui sag in Qiongdongnan basin are used to study the deep?water fan characteristic, sedimentary pattern and controlling factors developed in the Meishan formation of the Miocene. The results showed that several kinds of gravity?flow structures and sediments are developed in this formation and in bathyal environment. By analyses of 3D seismic data integrated with rock and mineral feature, grain size, sedimentary structure and log facies, such sedimentary microfacies as chan?nel, interchannel and sand sheet can be recognized. The Meishan deep?water fans belong to shelf?margin delta?valley?submarine fan sedimentary model which is mainly controlled by the tectonic framework of the Late Sanya formation, relative sea?level changes, slope break evolution and the material supply of the delta

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