西南石油大学学报(自然科学版)

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Reef Sediment Distribution and Exploration Fields of Changxing Formation in Fuling Block,Southeast Sichuan Basin

Li Yuping*   

  1. Branch of Exploration Company,SINOPEC,Chengdu,Sichuan 610041,China
  • Online:2015-08-01 Published:2015-08-01

Abstract:

According to the analyses on features of regional sedimentary facies and outcrops,studies from perpendicular
sequence stratigraphy overlapping and evolution relationship in surrounding wells in Fuling Area in Sichuan Basin,the seismic
interpretation model is firstly built up to carry out seismic interpretation of regional great seismic profile,then by using regional
great sequence stratigraphy seismic profile,interpretation on seismic facies and sedimentary facies are carried out and faciesdevelopment
mode of reservoirs is built up,thus the exploration ranges of Changxing Formation and their seismic responding
features are clear. There develop two sedimentary cycles in Changxing Formation as well as high energy reef-beach facies belts
at the margin of platform. There existed two terrain slope laps before Changxing Formation deposited,the one lap is from
platform margin to shelf transiting area,the other one is the lap located in the inner part of platform. The two laps control two
rows of the development of high-energy facies belts of reef-beach,which are main targets for gas exploration.

Key words: Changxing Formation, sequence stratigraphy, reef and beach, exploration fields, Sichuan Basin