珠江口盆地珠一坳陷北部洼陷带油气成藏主控因素

doi:10.11743/ogg20170316

Abstract

Abstract: The dry wells in northern sub-sag belt of the Zhu-1 Depression,indicates that the "source" and "migration" account for a large proportion of well failure and are the two key controlling factors of hydrocarbon accumulation.For the source presence,based on seismic facies and geochemical analysis,five of the eight subsags,developing deep or semi-deep lacustrine source rocks,are identified to be favorable for hydrocarbon generation.For the migration,according to structural belt analysis on the plane view,five subsags in northern subsag belt feature gentle slope belt favorable for hydrocarbon enrichment.In vertical perspective,according to analysis of faults and Enping Formation mudstone sealing conditions of the five subsags,three of them belong to the shallow strata sealing type and the other two belong to the deep strata sealing type,favorable for shallow and deep accumulations respectively.

Key words: source rock, migration, hydrocarbon accumulation,northern subsag belt, Zhu-1 Depression, Pearl River Mouth Basin

CLC Number:

TE122.1

Liu Zhifeng, Wu Keqiang, Ke Ling, Wang Shenglan, Yu Kaiping, Zhu Wenqi. Main factors controlling hydrocarbon accumulation in northern subsag belt of the Zhu-1 Depression，Pearl River Mouth Basin[J]. Oil & Gas Geology, 2017, 38(3): 561-569.

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Main factors controlling hydrocarbon accumulation in northern subsag belt of the Zhu-1 Depression，Pearl River Mouth Basin

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