南苏门答腊盆地B区块层序地层格架及有利成藏带

doi:10.11743/ogg20130109

Abstract

Abstract:

South Sumatra Basin is a Cenozoic back-arc rift basin experienced four tectonic evolution stages and a full cycle of transgression-regression.As a result,the basin presents a unique sequence stratigraphy and sedimentray filling pattern and contains diversified depositional systems:lacustrine,fluvial,delta,shallow marine shelf carbonates,organic reef and etc.The Block B in the basin was studied in detail and its sequence stratigraphic framework was established.The Cenozoic strata in the block were divided into eight third-order sequences with Sq1 to Sq4 as the key exploration targets.Based on its paleo-geomorphic characteristics,four structural units with different sedimentary characteristics and exploration target were identified.Vertically,four plays were identified within the sequence stratigraphic framework based on summation of each structural evolution stage.Laterally,the hydrocarbon accumulation conditions were comprehensively analyzed by using structure overlapping method after structure interpretation of each stage,leading to the identification of five prospective structural zones.The study offers a sound foundation for further exploration and development of the block.

Key words: sedimentary system, play, play fairway, sequence stratigraphic framework, South Sumatra Basin

CLC Number:

TE121

Tian Shicun, Liu Guochen, Tang Lei, Chen Hui, Sun Junshu. Sequence stratigraphic framework and play fairways in Block B of the South Sumatra Basin[J]. Oil & Gas Geology, 2013, 34(1): 68-76.

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Sequence stratigraphic framework and play fairways in Block B of the South Sumatra Basin

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