华南海相下组合层序地层格架与油气勘探

doi:10.11743/ogg20060312

Abstract

Abstract:

Based on establishment of regional sequence stratigraphic framework,it is believed that the regional main source rocks and cap rocks would have been formed in the transgressive system tract of the supersequence;while the high-quality regional reservoirs would be consistent with the highstand and lowstand of the supersequence.Vertically,3 source-reservoir-cap combinations occur in the lower assemblage(Lower Paleozoic) marine carbonates in South China,and they can be divided into 5 types,including boundary type,lowstand type,transgressive type, highstand type and composite type.Each type of source-reservoir-cap combination has different features of reservoiring geology.It is suggested that reef flat limestone-dolomitized limestone/dolomite-palaeokarst are the most favorable reservoirs,palaeohigh-late structural traps are the most favorable location;and southeastern Sichuan-northern Guizhou area is the frontier where exploration breakthrough would be expected in the near future.

Key words: sequence stratigrpahic framework, source-reservoir-cap combination, lower assemblage, system tract, hydrocarbon prospecting, new understanding, marine strata in South China

CLC Number:

TE111.2

Chen Hongde, Ni Xinfeng, Tian Jingchun, Wei Dongxiao. Sequence stratigraphic framework of marine lower assemblage in South China and petroleum exploration[J]. Oil & Gas Geology, 2006, 27(3): 370-377.

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Sequence stratigraphic framework of marine lower assemblage in South China and petroleum exploration

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