Lacustrine Source Rock Occurrence and Its Petroleum Reservoir Distribution of Paleogene Fault Basins in Offshore China and Southeast Asia

Abstract

Abstract: The hydrocarbon-generating amounts from lacustrine source rocks mainly distributed in the fault basins of the Paleogen in offshore China and Southeast Asia account for 95% and 48% of the total petroleum resources in these areas, respectively. This paper presents the distributing features of seven fault basins' source rocks and their reservoirs in such areas and suggests by correlation that there exist two distinct models of source rock distribution: one is Bohai Bay basin model characterized by deep lacustrine shale of big thickness and wide distribution; the other is Asri-Central Sumatra basin model by shallow lacustrine shale of small thickness and narrow distribution. Based on these, the spatial combination relationship between the source rock distribution and the existing oil-gas fields is analyzed, and the features of source rock distribution and the reservoirs are revealed.

Key words: source rock, fault basin, rifted basin, Paleogene, Central Sumatra basin, Southeast Asia

CLC Number:

TE51

KANG An, YANG Lei. Lacustrine Source Rock Occurrence and Its Petroleum Reservoir Distribution of Paleogene Fault Basins in Offshore China and Southeast Asia[J]. Xinjiang Petroleum Geology, 2010, 31(4): 337-340.

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