中国南方海相烃源岩中笔石生烃能力研究

发布时间：2018-06-30 10:30

  本文选题：笔石页岩 + 热解色谱　； 参考：《岩矿测试》2017年03期

【摘要】：我国南方海相页岩中普遍发育的笔石与海相页岩气成因具有密切的关系,但笔石是否具有页岩气生烃能力,一直未有可靠的、直接的相关实验证实。本文通过采集笔石含量丰富的黑色页岩,手工挑选纯笔石样品并进行热解生烃模拟实验研究,证实了笔石页岩中的笔石是一种较好的生烃母质。笔石样品的碳含量较高,贡献了笔石页岩的大部分碳来源。达到生油高峰后的笔石热解生烃产物主要为天然气-轻质油,这两部分生烃产物占总生烃产物的94%以上,且其中的气态烃占总烃比例达到了54%左右。分析认为,笔石的热解生烃特征介于Ⅲ型有机质和Ⅱ型有机质之间,近似于Ⅲ型有机质生烃特征,以气态烃产物为主。由此推论,在笔石热成熟演化过程中,其有机质生烃能力可能更高,与目前南方广泛发育页岩气的成因息息相关。
[Abstract]:There is a close relationship between the genesis of marine shale gas and the widespread development of graptolite in marine shale in southern China. However, whether graptolite has the hydrocarbon generation ability of shale gas has not been confirmed by reliable and direct relevant experiments. In this paper, by collecting the black shale with abundant graptolite content, selecting the pure graptolite sample by hand and conducting the pyrolytic hydrocarbon-generating simulation experiment, it is proved that the graptolite in the graptolite shale is a better hydrocarbon generating material. The carbon content of graptolite samples is high, contributing to most of the carbon source of graptolite shale. The pyrolytic hydrocarbon generation products of graptolite after the peak of oil generation are mainly natural gas and light oil, which account for more than 94% of the total hydrocarbon generation products, and the gaseous hydrocarbon accounts for about 54% of the total hydrocarbon generation products. It is considered that the pyrolytic hydrocarbon generation characteristics of graptolites are between type 鈪，

本文编号：2085974