PETROLEUMS SYSTEMS, POOL-FORMATION AND OIL AND GAS DISTRIBUTION IN THE MIDDLE-SHALLOW STRATA OF NORTHERN SONGLIAO BASIN

doi:10.3863/j.issn.1000-2634.2001.05.01

Abstract

Abstract:

By analyzing the history of fault activity, generation and expulsion of oil and gas from source rocks and the sealing ability of caprocks, this work studied the evolution of petroleum systems and its control on the formation and distribution of oil and gas accumulations in the middle-shallow strata in northern Songliao basin. It is found that the end of Nenjiang formation, Mingshui formation and Eogene sedimentation were phases when the middle-shallow petroleum systems extended downward. As a result of these extensions, the F, Y, S, P, G and H oil layers are characterized by multi-oil layers having been charged by the same source bed or a single oil layer charged by multi-source beds. The mode of oil and gas migration and accumulation also change with the evolution of the petroleum systems.

Key words: northern Songliao basin, middle-shallow strata, petroleum systems, evolution, pool formation, distribution

CLC Number:

TE121

FU Guang FU Xiao-fei LIU An-ying.. PETROLEUMS SYSTEMS, POOL-FORMATION AND OIL AND GAS DISTRIBUTION IN THE MIDDLE-SHALLOW STRATA OF NORTHERN SONGLIAO BASIN[J]. 西南石油大学学报(自然科学版), 2001, 23(6): 1-5.

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PETROLEUMS SYSTEMS, POOL-FORMATION AND OIL AND GAS DISTRIBUTION IN THE MIDDLE-SHALLOW STRATA OF NORTHERN SONGLIAO BASIN

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