J4 ›› 2011, Vol. 41 ›› Issue (1): 46-53.

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Beach Bar-Provenance System on the Upper Part of Fourth Member of Shahejie Formation, in Dongying Sag

YANG Yong-qiang1, QIU Long-wei1,JIANG Zai-xing2,BAI Feng-kun3   

  1. 1.College of Earth Resource and Information, China University of Petroleum, Qingdao 266555, Shandong|China;
    2. School of Energy Resources, China University of Geosciences, Beijing 100083, China;
    3.Shengli Production Plant|Shengli Oilfield Company Ltd|Sinopec|Dongying 257061|Shandong, China
  • Received:2010-04-07 Online:2011-01-26 Published:2011-01-26

Abstract:

The beach bar sandstone is an important depositional system of the upper part of Fourth Member  of  Shahejie Formation in Dongying sag. The systems of sediment supply of Es4 upper-part in Dongying sag are discussed on the basis of the types of lithic grains and microscopic characteristic,compositional maturity of sandstone,sandstone distribution and palaeogeographic framework. There are nine provenance systems in the region of interest, and Guangrao bulge,Luxi uplift,Binxian bulge and Gaoqing delta supply the material. In accordance with the relationship between sediment supply and beach-bar, it is divided into bedrock-beach bar provenance system, delta-beach bar provenance system, fan delta-beach bar provenance system in the region. Because of difference of the nature and supply strength, it results in significant differences in macro-distribution and reservoir characteristics of beach bar.

Key words: Dongying sag, upper part of Fourth Member of Shahejie Formation, beach bar, provenance system, petroleum gas

CLC Number: 

  • P618.13
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