摘要
烃源岩生烃模拟试验是确定烃源岩在不同演化阶段的生气量、产物变化特征的关键技术之一。利用济阳坳陷沙四段低熟烃源岩进行了生烃模拟试验,发现模拟过程中气态烃产率、液态烃产率随温度升高而增大,当温度超过400℃后,液态烃产率有降低的趋势,气态烃产率仍然大幅度增加;模拟固体产物的总有机碳、H/C原子比、热解生烃潜量(S1+S2)和氢指数(HI)等随温度的升高而降低。这些规律的得出,对于深入认识烃源岩的演化过程、沙四段资源量计算等具有重要的地质意义。
Hydrocarbon generation simulative experiments of source rocks had been one of the main and key means to confirm how much generated gas from source rocks in its different evolvement phases, and to ascertain the changing characteristics of its outcomes. By making experiments using lower matured source rocks in the fourth section of Shahejie formation of Jiyang depression, several rules had been founded, those were: the generation rate of gas hydrocarbon and liquid state hydrocarbon had been hoisted with temperature heightened, when the temperature had been exceed over 400℃, the generation rate of liquid state hydrocarbon had been putting out depressing trend, but those of gas hydrocarbon also been increasing; moreover, such imitating solid outcomes as TOC, H/C, S1+S2,HI had decreased with the temperature increased. These rules will help us to deeply understand the evolvement process of source rocks, and have dramatic geological meanings in calculation the quantity of oil and gas resources in the fourth section of Shahejie formation.
出处
《断块油气田》
CAS
2005年第3期19-21,共3页
Fault-Block Oil & Gas Field
关键词
烃源岩
油气资源
气态烃产率
液态烃产率
Jiyang depression, Source rocks in the fourth section of Shahejie formation, Simulative experiment, Simulative hydrocarbon generation ratio.
