海相油气地质2018，Vol.23Issue(1)：91-96,6.DOI:10.3969/j.issn.1672-9854.2018.01.011
辽东湾古近系烃源岩生烃动力学研究
Kinetic Study on Oil and Gas Generation from Paleogene Source Rocks in Liaodong Bay Area, Northern China
摘要
Abstract
It is very difficult to estimate hydrocarbon-generation potential comprehensively by geochemical analysis only using inadequate source rock samples, among which few distributed in sags and mostly on the structure highs in Liaodong Bay area(more than 15000 km2).We studied the Paleogene samples in sags with kinetic simulations of hydrocarbon generation. According to the geochemical analysis, 4 samples of immature source rocks with different kerogen types such asⅠ,Ⅱ1,Ⅱ2,andⅢwere selected,and a series of thermal simulations of hydrocarbon generation were conducted respectively. The activation energy distributions of different source rocks were calculated from the simulation results by parallel first-order kinetic modeling. Based on the burial history and subsurface thermal gradient at an estimated point, the activation energy values were applied in the calculation of hydrocarbon generation rates from real source rocks with correlative kerogen types, which can restore the hydrocarbon generation evolutions of different source rocks in different sags. This study provides valuable data for the oil and gas potential assessment in Liaodong Bay area.关键词
烃源岩/生烃动力学/活化能/油气生成率/辽东湾探区/古近纪Key words
Source rock/Hydrocarbon-generation kinetics/Activation energy/Hydrocarbon generation rate/Paleo-gene/Liaodong Bay/Northern China分类
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牛成民,金强,李培培,张如才,程付启,吴奎..辽东湾古近系烃源岩生烃动力学研究[J].海相油气地质,2018,23(1):91-96,6.基金项目
本文受国家油气重大专项"渤海湾盆地深层油气地质与增储方向"(编号:2016ZX05006-007)和中海油天津分公司项目"辽东湾探区烃源岩评价"共同资助 （编号:2016ZX05006-007）
