Carbon isotope composition characteristics of light hydrocarbon gas from typical kerogen cracking and its application for gas source identification: A case study of the Sichuan Basin

干酪根 甲烷 碳同位素 烃源岩 碳氢化合物 天然气 地质学 碳纤维 油页岩 矿物学 地球化学 构造盆地 总有机碳 化学 环境化学 材料科学 古生物学 有机化学 复合材料 复合数
作者
Hu Liu,Taotao Cao,Ming‐Hui Qi,Yi Huang,Xiaoming Feng,Jieqing Tan,Bin Cheng
出处
期刊:Geological Journal [Wiley]
卷期号:59 (1): 86-97
标识
DOI:10.1002/gj.4843
摘要

The natural gas resources in the Sichuan Basin are abundant and exhibit various phenomena, for example, mixed sources, mixed maturities and overlapping combinations, resulting in great difficulties in identifying natural gas sources. In this study, several groups of thermal simulation experiments were conducted on various types of kerogens using closed and/or semi‐open systems to investigate the characteristics of the carbon isotope compositions of light hydrocarbon gases derived from different typical kerogens. The results showed that the carbon isotope compositions and variation trends of methane and ethane are controlled by the kerogen type, thermal simulation system and thermal evolution degree. The carbon isotope compositions of light hydrocarbon gases derived from different types of kerogens exhibit some differences with increased thermal evolution degree. When the thermal simulation temperature increases from 320 to 550°C, the methane carbon isotope of typically marine source rocks, mainly type I and type II 1 kerogens, is slightly higher than or equivalent to that of ethane. However, the ethane carbon isotope of terrestrial source rocks, primarily types II 2 and III kerogens, is significantly heavier than methane. By comparison, the evolution trend of carbon isotope compositions of actual natural gas is well consistent with that of light hydrocarbon gases cracked from thermal simulation experiments with increased thermal evolution degree. These findings are of great importance to identify the source rock of actual natural gas with high thermal maturities, as well as to determine the sources of deep shale gas in the southern Sichuan Basin, the Yuanba gas field and the Puguang gas field. Finally, a fitting method of carbon isotope values of methane and ethane of light hydrocarbon gases can be used to more finely differentiate the sources of natural gas in complex areas with mixed sources, mixed maturities and overlapping combinations.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
刚刚
冷酷的青寒完成签到 ,获得积分10
1秒前
mango524完成签到,获得积分10
1秒前
所所应助岳岳采纳,获得10
1秒前
江梦松完成签到,获得积分10
2秒前
在水一方应助开朗艳一采纳,获得10
3秒前
WJ发布了新的文献求助10
3秒前
领导范儿应助Rainielove0215采纳,获得10
3秒前
4秒前
方格发布了新的文献求助10
4秒前
bkagyin应助河马采纳,获得10
6秒前
Liufgui应助恋雅颖月采纳,获得20
7秒前
朱孝培完成签到,获得积分10
7秒前
水濑心源完成签到,获得积分10
7秒前
冷酷的青寒关注了科研通微信公众号
8秒前
小蜡笔发布了新的文献求助10
9秒前
Veronica Mew完成签到 ,获得积分10
10秒前
Elaine_fy完成签到,获得积分10
10秒前
思源应助yr采纳,获得10
10秒前
lm发布了新的文献求助10
10秒前
Jasper应助木月子采纳,获得10
11秒前
李爱国应助aiyoualxb采纳,获得10
11秒前
lemonkane关注了科研通微信公众号
11秒前
丘比特应助橘子海采纳,获得10
12秒前
闾丘山菡完成签到,获得积分10
13秒前
Hello应助写得出发的中采纳,获得10
13秒前
木棉完成签到,获得积分20
14秒前
情怀应助猪猪hero采纳,获得10
14秒前
LaTeXer给fd163c的求助进行了留言
14秒前
量子星尘发布了新的文献求助10
16秒前
16秒前
Candy完成签到,获得积分10
17秒前
丘比特应助彩色的过客采纳,获得10
18秒前
19秒前
maybe发布了新的文献求助10
19秒前
DrCoLd完成签到,获得积分10
19秒前
20秒前
ding应助liuzengzhang666采纳,获得10
21秒前
21秒前
21秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
‘Unruly’ Children: Historical Fieldnotes and Learning Morality in a Taiwan Village (New Departures in Anthropology) 400
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3988827
求助须知:如何正确求助?哪些是违规求助? 3531183
关于积分的说明 11252671
捐赠科研通 3269809
什么是DOI,文献DOI怎么找? 1804780
邀请新用户注册赠送积分活动 881885
科研通“疑难数据库(出版商)”最低求助积分说明 809021