GSTDTAP  > 地球科学
DOI10.1306/07031817108
Mechanism of hydrocarbon accumulation and enrichment of tuffaceous tight oil with separate reservoir and source rock: A case study of tuff reservoir from the Permian Tiaohu Formation in the Santanghu Basin, northwest China
Ma, Jian; Huang, Zhilong; Li, Tianjun
2019-02-01
发表期刊AAPG BULLETIN
ISSN0149-1423
EISSN1558-9153
出版年2019
卷号103期号:2页码:345-367
文章类型Article
语种英语
国家Peoples R China
英文摘要

Different from most tight oil reservoirs, the tuffaceous tight oil of the Tiaohu Formation is not in situ oil, and no close contact exists between the source rock and reservoir in the Malang sag (Santanghu Basin, China). This study determined the mechanism of hydrocarbon accumulation of this tuffaceous tight oil reservoir through an integrated analysis of oil-source rock correlation, reservoir characteristics, and rock wettability combined with a comprehensive analysis of geological conditions. An oil-source rock correlation using biomarkers and stable carbon isotopes shows that the crude oil originated from underlying source rocks in the Lucaogou Formation. The oil in the tuffaceous tight reservoir is not indigenous but has migrated over a long distance to accumulate in these reservoirs. Faults and fractures that developed at the end of the Cretaceous are the oil migration pathways. Vitric and crystal-vitric tuffs constitute the main rock types of the tuffaceous tight reservoir. Matrix-related pores in the tuffs mainly comprise interparticle pores between minerals and dissolution intraparticle pores formed by devitrification. The adsorption of polar components of the oil generated from original organic matter in the tuff leads to wettability of lipophilicity, which is the main reason for hydrocarbon charging and accumulation. To our knowledge, this is the first comprehensive study reporting this finding.


领域地球科学
收录类别SCI-E
WOS记录号WOS:000459337300004
WOS关键词ORGANIC GEOCHEMICAL CHARACTERISTICS ; LACUSTRINE SOURCE ROCKS ; CARBON-ISOTOPE ; PALEOZOIC ACCRETIONARY ; SEDIMENTATION-RATE ; SONGLIAO BASIN ; WETTABILITY ; PYROLYSIS ; MIGRATION ; MATTER
WOS类目Geosciences, Multidisciplinary
WOS研究方向Geology
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/24506
专题地球科学
作者单位China Univ Petr, State Key Lab Petr Resources & Prospecting, Beijing, Peoples R China
推荐引用方式
GB/T 7714
Ma, Jian,Huang, Zhilong,Li, Tianjun. Mechanism of hydrocarbon accumulation and enrichment of tuffaceous tight oil with separate reservoir and source rock: A case study of tuff reservoir from the Permian Tiaohu Formation in the Santanghu Basin, northwest China[J]. AAPG BULLETIN,2019,103(2):345-367.
APA Ma, Jian,Huang, Zhilong,&Li, Tianjun.(2019).Mechanism of hydrocarbon accumulation and enrichment of tuffaceous tight oil with separate reservoir and source rock: A case study of tuff reservoir from the Permian Tiaohu Formation in the Santanghu Basin, northwest China.AAPG BULLETIN,103(2),345-367.
MLA Ma, Jian,et al."Mechanism of hydrocarbon accumulation and enrichment of tuffaceous tight oil with separate reservoir and source rock: A case study of tuff reservoir from the Permian Tiaohu Formation in the Santanghu Basin, northwest China".AAPG BULLETIN 103.2(2019):345-367.
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