塔河地区三叠系油气充注幕次划分与成藏时期确定

doi:10.11743/ogg20090308

Abstract

Abstract:

Controlled by regional "seesaw" tectonic movements and the fault carrier system,the Triassic of the Tahe area experienced a very complicated hydrocarbon accumulation process.In this study,we systematically analyzed 291 fluid inclusion samples.The hydrocarbon charging events and timing of accumulation in the Triassic were determined according to the fluorescent colors of oil inclusions and through projecting the homogenization temperature on burial history.The results show that,each of the upper,middle and lower oil layers in the Triassic were charged in three stages.The reservoirs in the northern Yuqi area were charged in the earlier(40-7.5 Ma) three discontinuous stages,while the reservoirs in the central-south area were charged in the later(11-0.9 Ma) three continuous stages.Based on these understandings,we have proposed that the peri-salt and supra-salt structural zones and lithological updip pinchout zones are the favorable targets for further exploration.

Key words: fluid inclusion, accumulation model, hydrocarbon accumulation stage, Triassic, Tahe area

CLC Number:

TE122.3

Lü Haitao, Chen Honghan, Tang Daqing, Ma Li. Determination of hydrocarbon charging events and timing of accumulation in the Triassic of Tahe area,the Tarim Basin[J]. Oil & Gas Geology, 2009, 30(3): 300-309,299.

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Determination of hydrocarbon charging events and timing of accumulation in the Triassic of Tahe area,the Tarim Basin

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