Oil & Gas Geology ›› 2001, Vol. 22 ›› Issue (2): 185-186.doi: 10.11743/ogg20010223

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DELTA DEPOSITS OF BRAIDED RIVER FROM SHAHEJIE FORMATION, LOWER TERTIARY IN BONAN SAG

Li Donghai1, kang Renhua1, Li Weifeng2, Peng Detang2   

  1. 1. Hekou Oil Production Factory of Shengli Oilfields, Dongying Shandong;
    2. Department of Earth Sciences Jianghan Petroleum Institute, Jingzhou, Hubei
  • Received:2001-04-03 Online:2001-06-25 Published:2012-01-16

Abstract:

Plenty of braided river delta front deposits and prodelta deposits were discovered in Lower Tertiary Shahejie Formation in Bonan Sag, Shengli Oilfields. They differ greatly from other types of delta deposits. The main body of the delta front consists of subaqueous distributary channel sandbars composed of pebbled sandstone and midium-coarse sandstone. Cross-bedding developed well in the delta, especially lateral accretion cross-bedding formed by lateral displacement and accretion of river channel sandbars.

Key words: braided river, delta, the Shahejie Formation, Bonan Sag

CLC Number: