Main oil generating macerals for coal-derived oil: A case study from the Jurassic coal-bearing Turpan Basin, NW China

显微组分 地质学 构造盆地 地球化学 煤系 方位(导航) 中国 采矿工程 地貌学 考古 岩相学 地理 地图学
作者
Jianping Chen,Chunping Deng,Huitong Wang,Xia Sun
出处
期刊:Organic Geochemistry [Elsevier]
卷期号:111: 113-125 被引量:15
标识
DOI:10.1016/j.orggeochem.2017.05.004
摘要

Abstract This paper examines the geochemical characteristics of pyrolysates from macerals such as the alginite, sporinite, cutinite, collotelinite and collodetrinite isolated from Jurassic coals and investigates their relative contributions to oil potential in respect to the Jurassic coal measures in the Turpan and other basins of northwest China. The alginite pyrolysate has the lightest carbon isotopic composition, followed by the sporinite and cutinite, while the collotelinite and collodetrinite pyrolysates show comparatively heavy carbon isotopic compositions. Pyrolysates from the alginite, sporinite and cutinite demonstrate much lower Pr/Ph ratios than those from the collotelinite and collodetrinite. Regarding the distributions of regular biomarkers such as steranes and hopanes, the alginite pyrolysate is comparatively rich in C 27 steranes, followed by pyrolysates from the sporinite and cutinite, whereas pyrolysates from the collotelinite and collodetrinite contain little or undetectable C 27 steranes. Furthermore, the pyrolysates from different kinds of macerals have remarkably different gammacerane concentrations. The gammacerane concentrations in pyrolysates from the alginite and cutinite are higher than that from the sporinite, though these macerals were separated from the same coal, whereas the collotelinite and collodetrinite pyrolysates have almost no gammacerane. The experimental results suggest that liptinite content in one given coal (e.g. alginite, sporinite and cutinite) controls the biomarker distributions in the coal-derived oils. Mass balance calculations of carbon isotopic compositions from the maceral pyrolysates show that the carbon isotopic composition of liquid hydrocarbons generated by organic matter in mudstone is very similar to that of most of the oils in the Jurassic coal-bearing basins of northwest China, while liquids from coal are much heavier than that of the oils. This indicates that the mudstone is likely to be the major source rocks of the oils, and coals likely to be the subordinate source rocks. Mass balance calculation based on the maceral contents and hydrocarbon-generative potential suggests that liptinites in mudstone in the Jurassic coal-measures of the Turpan Basin generate about 70% of oils, while the vitrinites produce about 30% of the oils. Therefore, the hydrogen-rich liptinites (alginite, sporinite and cutinite) are the main oil generating macerals, while vitrinites (collotelinite and collodetrinite) are secondary oil generating macerals in the Jurassic coal-bearing Turpan Basin and other Jurassic basins of northwest China.
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
大幅提高文件上传限制,最高150M (2024-4-1)

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
小鱼发布了新的文献求助10
刚刚
2秒前
alexyusheng完成签到,获得积分10
3秒前
3秒前
7秒前
华仔应助wjj采纳,获得10
7秒前
8秒前
斯文败类应助研友_8QyXr8采纳,获得10
8秒前
小鱼完成签到,获得积分10
8秒前
勤恳化蛹完成签到 ,获得积分10
8秒前
9秒前
9秒前
万能图书馆应助NOEYEDEER采纳,获得10
11秒前
12秒前
shengyue发布了新的文献求助10
12秒前
生姜完成签到,获得积分10
12秒前
鸢尾松茶完成签到 ,获得积分10
12秒前
风中浩天发布了新的文献求助10
13秒前
14秒前
zjy关注了科研通微信公众号
14秒前
胡楠发布了新的文献求助10
15秒前
16秒前
严易云完成签到,获得积分10
16秒前
天天快乐应助李华采纳,获得10
17秒前
17秒前
111完成签到,获得积分10
17秒前
lzr完成签到 ,获得积分10
17秒前
17秒前
左肩微笑发布了新的文献求助10
20秒前
糖糖爱干饭完成签到 ,获得积分10
20秒前
爆米花应助原野小年采纳,获得10
20秒前
wjj发布了新的文献求助10
21秒前
NOEYEDEER发布了新的文献求助10
21秒前
共享精神应助淡淡菠萝采纳,获得10
22秒前
小红的忧伤完成签到,获得积分10
24秒前
稳重向南完成签到,获得积分10
25秒前
TT发布了新的文献求助30
26秒前
26秒前
稳重向南发布了新的文献求助10
28秒前
shackle完成签到,获得积分10
29秒前
高分求助中
The Oxford Handbook of Social Cognition (Second Edition, 2024) 1050
Kinetics of the Esterification Between 2-[(4-hydroxybutoxy)carbonyl] Benzoic Acid with 1,4-Butanediol: Tetrabutyl Orthotitanate as Catalyst 1000
The Young builders of New china : the visit of the delegation of the WFDY to the Chinese People's Republic 1000
юрские динозавры восточного забайкалья 800
English Wealden Fossils 700
Chen Hansheng: China’s Last Romantic Revolutionary 500
Mantiden: Faszinierende Lauerjäger Faszinierende Lauerjäger 500
热门求助领域 (近24小时)
化学 医学 生物 材料科学 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 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3140687
求助须知:如何正确求助?哪些是违规求助? 2791539
关于积分的说明 7799401
捐赠科研通 2447880
什么是DOI,文献DOI怎么找? 1302124
科研通“疑难数据库(出版商)”最低求助积分说明 626459
版权声明 601194