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Multi-Isothermal Stage Pyrolysis of the Chang 7(3)Shale OilReservoirs, Ordos Basin: Implications for Oil Occurrence States andIn Situ Conversion Exploitation
Guo, Ruiliang1,2,3; Li, Shixiang4; Zhou, Xinping4; Guo, Qiheng4; Li, Shutong3; Chen, Junlin3,5; Zhang, Jiaqiang3,5; Hao, Lewei3; Ma, Xiaofeng3; Qiu, Junli3; Wang, Yang6; Liu, Peng7
2022-04-21
Source PublicationACS EARTH AND SPACE CHEMISTRY
ISSN2472-3452
Volume6Issue:4Pages:1143-1162
AbstractUnderstanding the content, component features, and controlling factors ofhydrocarbons in different occurrence states is a key element in assessing the resourcepotential, mobility, and engineering exploitability of shale oil. X-ray diffraction, bulkgeochemistry, multi-isothermal stage pyrolysis experiments, and total hydrocarbonchromatographic analyses were performed on a set of muddy siltstone (MS),finesandstone (FS), dark mudstone (DM), and black shale (BS) from the Chang 73subsection in the Huachi area to investigate the content, component features, andcontrolling factors of hydrocarbons in different occurrence forms and estimate the shaleoil engineering producibility under different production technical methods. The resultsshow that the residual hydrocarbon content in FS, BS, MS, and DM decreased in turn.Mudstone and shale (Mu&Sh) samples featured lower quartz and chlorite contents aswell as more pyrite and mixed layer I/S than siltstone and sandstone (Si&Sa) samples.Free and weakly adsorbed hydrocarbons constitute the mainstay of the hydrocarbons inBS and DM, while free hydrocarbons were dominant in MS and FS. The pyrolytic gaseswere chieflyCO2and methane. The (Sat. + Aro.)/(Res. + Asp.) ratios and plagioclase and chlorite contents jointly show a positiveeffect on the free/adsorbed hydrocarbon ratios, while the TOC, clay mineral, and mixed layer I/S contents were inverselyproportional. In general, geochemical features and mineral composition chieflyaffect adsorbed hydrocarbon yields to control thefree/adsorbed hydrocarbon ratio, the only exception of which is that the (Sat. + Aro.)/(Res. + Asp.) ratios affect free hydrocarbonyields. Si&Sa has good shale oil resource potential under volume fracturing because of its relatively high free hydrocarbon and brittlemineral contents and gas oil ratio. The weakly adsorbed hydrocarbons in Mu&Sh will be better transformed to the free state underpyrolysis conditions at 400 degrees C, which is more suitable for in situ heating conversion production. This study provides a new referenceand basis for the occurrence and mobility evaluation of Chang 73shale oil under different exploitation methods.
Keywordpyrolysis Yanchang formation shale oil occurrence states in situ conversion
DOI10.1021/acsearthspacechem.2c00057
Funding OrganizationKey Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council
WOS KeywordLACUSTRINE SHALE OIL ; BOHAI BAY BASIN ; CHINA IMPLICATIONS ; JIYANG DEPRESSION ; SOURCE ROCKS ; ORIGIN ; GAS ; ACCUMULATION ; SIMULATION ; RESOURCES
Language英语
Funding ProjectKey Laboratory of Petroleum Resources Research, Gansu Province[SZDKFJJ20211002] ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council[201904910319]
Funding OrganizationKey Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; Key Laboratory of Petroleum Resources Research, Gansu Province ; Key Laboratory of Petroleum Resources Research, Gansu Province ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council ; National Construction of HighQuality University Projects of Graduates from the China Scholarship Council
WOS Research AreaChemistry ; Geochemistry & Geophysics
WOS SubjectChemistry, Multidisciplinary ; Geochemistry & Geophysics
WOS IDWOS:000794564400028
PublisherAMER CHEMICAL SOC
Citation statistics
Document Type期刊论文
Identifierhttp://ir.iggcas.ac.cn/handle/132A11/105958
Collection兰州油气中心
Corresponding AuthorLi, Shutong; Chen, Junlin
Affiliation1.Xian Shiyou Univ, Sch Earth Sci & Engn, Xian 710065, Peoples R China
2.Xian Shiyou Univ, Shaanxi Key Lab Petr Accumulat Geol, Xian 710065, Peoples R China
3.Chinese Acad Sci, Northwest Inst Ecoenvironm & Resources, Key Lab Petr Resources, Lanzhou 730000, Gansu, Peoples R China
4.PetroChina Changqing Oil Field Co, Xian 710018, Peoples R China
5.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
6.Changan Univ, Sch Earth Sci & Resources, Xian 710054, Shaanxi, Peoples R China
7.Xian Univ Sci & Technol, Coll Safety Sci & Engn, Xian 710054, Shaanxi, Peoples R China
Recommended Citation
GB/T 7714
Guo, Ruiliang,Li, Shixiang,Zhou, Xinping,et al. Multi-Isothermal Stage Pyrolysis of the Chang 7(3)Shale OilReservoirs, Ordos Basin: Implications for Oil Occurrence States andIn Situ Conversion Exploitation[J]. ACS EARTH AND SPACE CHEMISTRY,2022,6(4):1143-1162.
APA Guo, Ruiliang.,Li, Shixiang.,Zhou, Xinping.,Guo, Qiheng.,Li, Shutong.,...&Liu, Peng.(2022).Multi-Isothermal Stage Pyrolysis of the Chang 7(3)Shale OilReservoirs, Ordos Basin: Implications for Oil Occurrence States andIn Situ Conversion Exploitation.ACS EARTH AND SPACE CHEMISTRY,6(4),1143-1162.
MLA Guo, Ruiliang,et al."Multi-Isothermal Stage Pyrolysis of the Chang 7(3)Shale OilReservoirs, Ordos Basin: Implications for Oil Occurrence States andIn Situ Conversion Exploitation".ACS EARTH AND SPACE CHEMISTRY 6.4(2022):1143-1162.
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