Articles | Volume 14, issue 11
https://doi.org/10.5194/se-14-1169-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-14-1169-2023
© Author(s) 2023. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
The influence of extraction of various solvents on chemical properties on Chang 7 shale, Ordos Basin, China
Yan Cao
Institute of Energy, Peking University, Beijing 100871, China
School of Earth and Space Sciences, Peking University, Beijing 100871, China
Zhijun Jin
CORRESPONDING AUTHOR
Institute of Energy, Peking University, Beijing 100871, China
School of Earth and Space Sciences, Peking University, Beijing 100871, China
Rukai Zhu
Institute of Energy, Peking University, Beijing 100871, China
School of Earth and Space Sciences, Peking University, Beijing 100871, China
Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China
Kouqi Liu
Institute of Energy, Peking University, Beijing 100871, China
School of Earth and Space Sciences, Peking University, Beijing 100871, China
Related subject area
Subject area: The evolving Earth surface | Editorial team: Stratigraphy, sedimentology, geomorphology, morphotectonics, and palaeontology | Discipline: Sedimentology
What does it take to restore geological models with “natural” boundary conditions?
Impact of stress regime change on the permeability of a naturally fractured carbonate buildup (Latemar, the Dolomites, northern Italy)
Deep vs. shallow – two contrasting theories? A tectonically activated Late Cretaceous deltaic system in the axial part of the Mid-Polish Trough: a case study from southeast Poland
Miocene high elevation in the Central Alps
What makes seep carbonates ignore self-sealing and grow vertically: the role of burrowing decapod crustaceans
Dawn and dusk of Late Cretaceous basin inversion in central Europe
Simulating permeability reduction by clay mineral nanopores in a tight sandstone by combining computer X-ray microtomography and focussed ion beam scanning electron microscopy imaging
Birth and closure of the Kallipetra Basin: Late Cretaceous reworking of the Jurassic Pelagonian–Axios/Vardar contact (northern Greece)
Sediment history mirrors Pleistocene aridification in the Gobi Desert (Ejina Basin, NW China)
Tectonic processes, variations in sediment flux, and eustatic sea level recorded by the 20 Myr old Burdigalian transgression in the Swiss Molasse basin
Miocene basement exhumation in the Central Alps recorded by detrital garnet geochemistry in foreland basin deposits
Can anaerobic oxidation of methane prevent seafloor gas escape in a warming climate?
Precipitation of dolomite from seawater on a Carnian coastal plain (Dolomites, northern Italy): evidence from carbonate petrography and Sr isotopes
The Ogooue Fan (offshore Gabon): a modern example of deep-sea fan on a complex slope profile
Formation of linear planform chimneys controlled by preferential hydrocarbon leakage and anisotropic stresses in faulted fine-grained sediments, offshore Angola
From oil field to geothermal reservoir: assessment for geothermal utilization of two regionally extensive Devonian carbonate aquifers in Alberta, Canada
Sedimentary mechanisms of a modern banded iron formation on Milos Island, Greece
Melchior Schuh-Senlis, Guillaume Caumon, and Paul Cupillard
Solid Earth, 15, 945–964, https://doi.org/10.5194/se-15-945-2024, https://doi.org/10.5194/se-15-945-2024, 2024
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This paper presents the application of a numerical method for restoring models of the subsurface to a previous state in their deformation history, acting as a numerical time machine for geological structures. The method is applied to a model based on a laboratory experiment. The results show that using force conditions in the computation of the deformation allows us to assess the value of some previously unknown physical parameters of the different materials inside the model.
Onyedika Anthony Igbokwe, Jithender J. Timothy, Ashwani Kumar, Xiao Yan, Mathias Mueller, Alessandro Verdecchia, Günther Meschke, and Adrian Immenhauser
Solid Earth, 15, 763–787, https://doi.org/10.5194/se-15-763-2024, https://doi.org/10.5194/se-15-763-2024, 2024
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We present a workflow that models the impact of stress regime change on the permeability of fractured Latemar carbonate buildup using a displacement-based linear elastic finite-element method (FEM) and outcrop data. Stress-dependent heterogeneous apertures and effective permeability were calculated and constrained by the study area's stress directions. Simulated far-field stresses at NW–SE subsidence deformation and N–S Alpine deformation increased the overall fracture aperture and permeability.
Zbyszek Remin, Michał Cyglicki, and Mariusz Niechwedowicz
Solid Earth, 13, 681–703, https://doi.org/10.5194/se-13-681-2022, https://doi.org/10.5194/se-13-681-2022, 2022
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Traditionally, the axial part of the Polish Basin, i.e. the Mid-Polish Trough, was interpreted as the deepest and most subsiding part of the basin during the Cretaceous times. We interpret this area conversely, as representing a landmass – the Łysogóry–Dobrogea Land. Inversion-related tectonics, uplift on the one hand and enhanced subsidence on the other, drove the development of the Szozdy Delta within the axial part of the basin. New heavy mineral data suggest different burial histories.
Emilija Krsnik, Katharina Methner, Marion Campani, Svetlana Botsyun, Sebastian G. Mutz, Todd A. Ehlers, Oliver Kempf, Jens Fiebig, Fritz Schlunegger, and Andreas Mulch
Solid Earth, 12, 2615–2631, https://doi.org/10.5194/se-12-2615-2021, https://doi.org/10.5194/se-12-2615-2021, 2021
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Here we present new surface elevation constraints for the middle Miocene Central Alps based on stable and clumped isotope geochemical analyses. Our reconstructed paleoelevation estimate is supported by isotope-enabled paleoclimate simulations and indicates that the Miocene Central Alps were characterized by a heterogeneous and spatially transient topography with high elevations locally exceeding 4000 m.
Jean-Philippe Blouet, Patrice Imbert, Sutieng Ho, Andreas Wetzel, and Anneleen Foubert
Solid Earth, 12, 2439–2466, https://doi.org/10.5194/se-12-2439-2021, https://doi.org/10.5194/se-12-2439-2021, 2021
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Biochemical reactions related to hydrocarbon seepage are known to induce carbonates in marine sediments. Seep carbonates may act as seals and force lateral deviations of rising hydrocarbons. However, crustacean burrows may act as efficient vertical fluid channels allowing hydrocarbons to pass through upward, thereby allowing the vertical growth of carbonate stacks over time. This mechanism may explain the origin of carbonate columns in marine sediments throughout hydrocarbon provinces worldwide.
Thomas Voigt, Jonas Kley, and Silke Voigt
Solid Earth, 12, 1443–1471, https://doi.org/10.5194/se-12-1443-2021, https://doi.org/10.5194/se-12-1443-2021, 2021
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Basin inversion in central Europe is believed to have started during Late Cretaceous (middle Turonian) and probably proceeded until the Paleogene. Data from different marginal troughs in central Europe point to an earlier start of basin inversion (in the Cenomanian). The end of inversion is overprinted by general uplift but had probably already occurred in the late Campanian to Maastrichtian. Both the start and end of inversion occurred with low rates of uplift and subsidence.
Arne Jacob, Markus Peltz, Sina Hale, Frieder Enzmann, Olga Moravcova, Laurence N. Warr, Georg Grathoff, Philipp Blum, and Michael Kersten
Solid Earth, 12, 1–14, https://doi.org/10.5194/se-12-1-2021, https://doi.org/10.5194/se-12-1-2021, 2021
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In this work, we combined different imaging and experimental measuring methods for analysis of cross-scale effects which reduce permeability of tight reservoir rocks. Simulated permeability of digital images of rocks is often overestimated, which is caused by non-resolvable clay content within the pores of a rock. By combining FIB-SEM with micro-XCT imaging, we were able to simulate the true clay mineral abundance to match experimentally measured permeability with simulated permeability.
Lydia R. Bailey, Filippo L. Schenker, Maria Giuditta Fellin, Miriam Cobianchi, Thierry Adatte, and Vincenzo Picotti
Solid Earth, 11, 2463–2485, https://doi.org/10.5194/se-11-2463-2020, https://doi.org/10.5194/se-11-2463-2020, 2020
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The Kallipetra Basin, formed in the Late Cretaceous on the reworked Pelagonian–Axios–Vardar contact in the Hellenides, is described for the first time. We document how and when the basin evolved in response to tectonic forcings and basin inversion. Cenomanian extension and basin widening was followed by Turonian compression and basin inversion. Thrusting occurred earlier than previously reported in the literature, with a vergence to the NE, at odds with the regional SW vergence of the margin.
Georg Schwamborn, Kai Hartmann, Bernd Wünnemann, Wolfgang Rösler, Annette Wefer-Roehl, Jörg Pross, Marlen Schlöffel, Franziska Kobe, Pavel E. Tarasov, Melissa A. Berke, and Bernhard Diekmann
Solid Earth, 11, 1375–1398, https://doi.org/10.5194/se-11-1375-2020, https://doi.org/10.5194/se-11-1375-2020, 2020
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We use a sediment core from the Gobi Desert (Ejina Basin, NW China) to illustrate the landscape history of the area. During 2.5 million years a sediment package of 223 m thickness has been accumulated. Various sediment types document that the area turned from a playa environment (shallow water environment with multiple flooding events) to an alluvial–fluvial environment after the arrival of the Heihe in the area. The river has been diverted due to tectonics.
Philippos Garefalakis and Fritz Schlunegger
Solid Earth, 10, 2045–2072, https://doi.org/10.5194/se-10-2045-2019, https://doi.org/10.5194/se-10-2045-2019, 2019
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The controls on the 20 Myr old Burdigalian transgression in the Swiss Molasse basin have been related to a reduction in sediment flux, a rise in global sea level, or tectonic processes in the adjacent Alps. Here, we readdress this problem and extract stratigraphic signals from the Upper Marine Molasse deposits in Switzerland. In conclusion, we consider rollback tectonics to be the main driving force controlling the transgression, which is related to a deepening and widening of the basin.
Laura Stutenbecker, Peter M. E. Tollan, Andrea Madella, and Pierre Lanari
Solid Earth, 10, 1581–1595, https://doi.org/10.5194/se-10-1581-2019, https://doi.org/10.5194/se-10-1581-2019, 2019
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The Aar and Mont Blanc regions in the Alps are large granitoid massifs characterized by high topography. We analyse when these granitoids were first exhumed to the surface. We test this by tracking specific garnet grains, which are exclusively found in the granitoid massifs, in the sediments contained in the alpine foreland basin. This research ties in with ongoing debates on the timing and mechanisms of mountain building.
Christian Stranne, Matt O'Regan, Martin Jakobsson, Volker Brüchert, and Marcelo Ketzer
Solid Earth, 10, 1541–1554, https://doi.org/10.5194/se-10-1541-2019, https://doi.org/10.5194/se-10-1541-2019, 2019
Maximilian Rieder, Wencke Wegner, Monika Horschinegg, Stefanie Klackl, Nereo Preto, Anna Breda, Susanne Gier, Urs Klötzli, Stefano M. Bernasconi, Gernot Arp, and Patrick Meister
Solid Earth, 10, 1243–1267, https://doi.org/10.5194/se-10-1243-2019, https://doi.org/10.5194/se-10-1243-2019, 2019
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The formation of dolomite (CaMg(CO3)2), an abundant mineral in Earth's geological record, is still incompletely understood. We studied dolomites embedded in a 100 m thick succession of coastal alluvial clays of Triassic age in the southern Alps. Observation by light microscopy and Sr isotopes suggests that dolomites may spontaneously from concentrated evaporating seawater, in coastal ephemeral lakes or tidal flats along the western margin of the Triassic Tethys sea.
Salomé Mignard, Thierry Mulder, Philippe Martinez, and Thierry Garlan
Solid Earth, 10, 851–869, https://doi.org/10.5194/se-10-851-2019, https://doi.org/10.5194/se-10-851-2019, 2019
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A large quantity a continental material is transported to the oceans by the world rivers. Once in the ocean, these particles can be transported down the continental shelf thanks to underwater avalanches. The repetition of such massive events can form very important sedimentary deposits at the continent–ocean transition. Data obtained during an oceanic cruise in 2010 allowed us to study such a system located offshore of Gabon and to evaluate the importance sediment transport in this area.
Sutieng Ho, Martin Hovland, Jean-Philippe Blouet, Andreas Wetzel, Patrice Imbert, and Daniel Carruthers
Solid Earth, 9, 1437–1468, https://doi.org/10.5194/se-9-1437-2018, https://doi.org/10.5194/se-9-1437-2018, 2018
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A newly discovered type of hydrocarbon leakage structure is investigated following the preliminary works of Ho (2013; et al. 2012, 2013, 2016): blade-shaped gas chimneys instead of classical cylindrical ones. These so-called
Linear Chimneysare hydraulic fractures caused by overpressured hydrocarbon fluids breaching cover sediments along preferential directions. These directions are dictated by anisotropic stresses induced by faulting in sediments and pre-existing salt-diapiric structures.
Leandra M. Weydt, Claus-Dieter J. Heldmann, Hans G. Machel, and Ingo Sass
Solid Earth, 9, 953–983, https://doi.org/10.5194/se-9-953-2018, https://doi.org/10.5194/se-9-953-2018, 2018
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This study focuses on the assessment of the geothermal potential of two extensive upper Devonian aquifer systems within the Alberta Basin (Canada). Our work provides a first database on geothermal rock properties combined with detailed facies analysis (outcrop and core samples), enabling the identification of preferred zones in the reservoir and thus allowing for a more reliable reservoir prediction. This approach forms the basis for upcoming reservoir studies with a focus on 3-D modelling.
Ernest Chi Fru, Stephanos Kilias, Magnus Ivarsson, Jayne E. Rattray, Katerina Gkika, Iain McDonald, Qian He, and Curt Broman
Solid Earth, 9, 573–598, https://doi.org/10.5194/se-9-573-2018, https://doi.org/10.5194/se-9-573-2018, 2018
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Banded iron formations (BIFs) are chemical sediments last seen in the marine sedimentary record ca. 600 million years ago. Here, we report on the formation mechanisms of a modern BIF analog in the Cape Vani sedimentary basin (CVSB) on Milos Island, Greece, demonstrating that rare environmental redox conditions, coupled to submarine hydrothermal activity and microbial processes, are required for these types of rocks to form in the modern marine biosphere.
Cited articles
Abourriche, A. K., Oumam, M., Hannache, H., Birot, M., Abouliatim, Y., Benhammou, A., El Hafiane, Y., Abourriche, A. M., Pailler, R., and Naslain, R.: Comparative studies on the yield and quality of oils extracted from Moroccan oil shale, J. Supercrit. Fluids, 84, 98–104, https://doi.org/10.1016/j.supflu.2013.09.018, 2013.
Allawzi, M., Al-Otoom, A., Allaboun, H., Ajlouni, A., and Al Nseirat, F.: CO2 supercritical fluid extraction of Jordanian oil shale utilizing different co-solvents, Fuel Process. Technol., 92, 2016–2023, https://doi.org/10.1016/j.fuproc.2011.06.001, 2011.
Cao, Y., Han, H., Liu, H. W., Jia, J. C., Zhang, W., Liu, P. W., Ding, Z. G., Chen, S. J., Lu, J. G., and Gao, Y.: Influence of solvents on pore structure and methane adsorption capacity of lacustrine shales: An example from a Chang 7 shale sample in the Ordos Basin, China, J. Petrol. Sci. Eng., 178, 419–428, https://doi.org/10.1016/j.petrol.2019.03.052, 2019.
Cao, Y., Han, H., Guo, C., Pang, P., Ding, Z. G., and Gao, Y.: Influence of extractable organic matters on pore structure and its evolution of Chang 7 member shales in the Ordos Basin, China: Implications from extractions using various solvents, J. Nat. Gas Sci. Eng., 79, 103370, https://doi.org/10.1016/j.jngse.2020.103370, 2020.
Chen, Y., Mastalerz, M., and Schimmelmann, A.: Characterization of chemical functional groups in macerals across different coal ranks via micro-FTIR spectroscopy, Int. J. Coal Geol., 104, 22–33, https://doi.org/10.1016/j.coal.2012.09.001, 2012.
CPSC – China Petroleum Standardization Committee: Analysis Method for Clay Minerals and Ordinary Non-clay Minerals in Sedimentary Rocks by X-Ray Diffraction, SY/T 5163-2010, https://www.gb-gbt.cn/PDF.aspx/SYT5163-2010.2010.10.01 (last access: 6 November 2023), 2010.
Drobniak, A. and Mastalerz, M.: Chemical evolution of Miocene wood: Example from the Belchatow brown coal deposit, central Poland, Int. J. Coal Geol., 66, 157–178, https://doi.org/10.1016/j.coal.2005.06.004, 2006.
Duan, Y., Wang, C. Y., Zheng, C. Y., Wu, B. X., and Zheng, G. D.: Geochemical study of crude oils from the Xifeng oilfield of the Ordos basin, China, J. Asian Earth Sci., 31, 341–356, https://doi.org/10.1016/j.jseaes.2007.05.003, 2008.
Ertas, D., Kelemen, S. R., and Halsey, T. C.: Petroleum expulsion part 1. Theory of kerogen swelling in multicomponent solvents, Energy Fuels, 20, 295–300, https://doi.org/10.1021/ef058024k, 2006.
Espitalie, J., Deroo, G., and Marquis, F.: Rock-Eval pyrolysis and its applications (part 2), Rev. Inst. Fr. Pet., 40, 755–784, 1985.
Feng, Y., Van Le Doan, T., and Pomerantz, A. E.: The chemical composition of bitumen in pyrolyzed green river oil shale: Characterization by 13C NMR spectroscopy, Energy Fuels, 27, 7314–7323, https://doi.org/10.1021/ef4016685, 2013.
Furmann, A., Mastalerz, M., Brassell, S. C., Schimmelmann, A., and Picardal, F.: Extractability of biomarkers from high- and low-vitrinite coals and its effect on the porosity of coal, Int. J. Coal Geol., 107, 141–151, https://doi.org/10.1016/j.coal.2012.09.010, 2013.
Gorynski, K. E., Tobey, M. H., Enriquez, D. A., Smagala, T. M., Dreger, J. L., and Newhart, R. E.: Quantification and characterization of hydrocarbon-filled porosity in oil-rich shales using integrated thermal extraction, pyrolysis, and solvent extraction, Am. Assoc. Petrol. Geol. Bull., 103, 723–744, https://doi.org/10.1306/08161817214, 2019.
Guan, X. H., Liu, Y., Wang, D., Wang, Q., Chi, M. S., Liu, S., and Liu, C. G.: Three-Dimensional Structure of a Huadian Oil Shale Kerogen Model: An Experimental and Theoretical Study, Energy Fuels, 29, 4122–4136, https://doi.org/10.1021/ef502759q, 2015.
Guo, H., Jia, W., Peng, P., Lei, Y., Luo, X., Cheng, M., Wang, X., Zhang, L., and Jiang, C.: The composition and its impact on the methane sorption of lacustrine shales from the Upper Triassic Yanchang Formation, Ordos Basin, China, Mar. Petrol. Geol., 57, 509–520, https://doi.org/10.1016/j.marpetgeo.2014.05.010, 2014.
Hu, H., Zhang, J., Guo, S., and Chen, G.: Extraction of Huadian oil shale with water in sub- and supercritical states, Fuel, 78, 645–651, https://doi.org/10.1016/S0016-2361(98)00199-9, 1999.
Hu, S., Zhao, W., Hou, L., Yang, Z., Zhu, R., Wu, S., Bai, B., and Jin, X.: Development potential and technical strategy of continental shale oil in China, Petrol. Explor. Dev., 47, 877–887, https://doi.org/10.1016/S1876-3804(20)60103-3, 2020.
Ji, L. ming, Yan, K., Meng, F. W., and Zhao, M.: The oleaginous Botryococcus from the Triassic Yanchang Formation in Ordos Basin, Northwestern China: Morphology and its paleoenvironmental significance, J. Asian Earth Sci., 38, 175–185, https://doi.org/10.1016/j.jseaes.2009.12.010, 2010.
Johnson, R. N., Farnham, A. G., Clendinning, R. A., Hale, W. F., and Merriam, C. N.: Poly(aryl ethers) by nucleophilic aromatic substitution. I. Synthesis and properties, J. Polym. Sci. Pt. A, 5, 2375–2398, https://doi.org/10.1002/pol.1967.150050916, 1967.
Lei, Q., Weng, D., Xiong, S., Liu, H., Guan, B., Deng, Q., Yan, X., Liang, H., and Ma, Z.: Progress and development directions of shale oil reservoir stimulation technology of China National Petroleum Corporation, Petrol. Explor. Dev., 48, 1198–1207, https://doi.org/10.1016/S1876-3804(21)60102-7, 2021.
Lei, Y., Luo, X., Wang, X., Zhang, L., Jiang, C., Yang, W., Yu, Y., Cheng, M., and Zhang, L.: Characteristics of silty laminae in Zhangjiatan shale of southeastern Ordos Basin, China: Implications for shale gas formation, Am. Assoc. Petrol. Geol. Bull., 99, 661–687, https://doi.org/10.1306/09301414059, 2015.
Li, Y., Chen, S., Wang, Y., Su, K., He, Q., Qiu, W., and Xiao, Z.: Relationships between hydrocarbon evolution and the geochemistry of solid bitumen in the Guanwushan Formation, NW Sichuan Basin, Mar. Petrol. Geol., 111, 116–134, https://doi.org/10.1016/j.marpetgeo.2019.08.018, 2020.
Li, Y., Lu, J., Liu, X., Wang, J., Ma, W., He, X., Mou, F., and Li, X.: Geochemistry and origins of natural gas in the Hong-Che fault zone of the Junggar Basin, NW China, J. Petrol. Sci. Eng., 214, 110501, https://doi.org/10.1016/j.petrol.2022.110501, 2022.
Lin, R. and Patrick Ritz, G.: Studying individual macerals using i.r. microspectrometry, and implications on oil versus gas/condensate proneness and “low-rank” generation, Org. Geochem., 20, 695–706, https://doi.org/10.1016/0146-6380(93)90055-G, 1993.
Lu, J., Liao, J., Liu, X., Li, Y., Yao, J., He, Q., Xiao, Z., He, X., Fu, X., and Li, X.: Geochemistry of different source rocks and oil-source correlation of lacustrine sedimentary successions: A case study of the Triassic Yanchang formation in the Dingbian-Wuqi Area, Ordos Basin, Northern China, J. Asian Earth Sci., 232, 105216, https://doi.org/10.1016/j.jseaes.2022.105216, 2022.
Masaki, K., Yoshida, T., Li, C., Takanohashi, T., and Saito, I.: The effects of pretreatment and the addition of polar compounds on the production of “HyperCoal” from subbituminous coals, Energy Fuels, 18, 995–1000, https://doi.org/10.1021/ef049970o, 2004.
Mastalerz, M., Schimmelmann, A., Lis, G. P., Drobniak, A., and Stankiewicz, A.: Influence of maceral composition on geochemical characteristics of immature shale kerogen: Insight from density fraction analysis, Int. J. Coal Geol., 103, 60–69, https://doi.org/10.1016/j.coal.2012.07.011, 2012.
Monger, T. G.: The impact of oil aromaticity on carbon dioxide flooding, SPE symp. enhance. oil recov., 371–381, https://www.osti.gov/biblio/6869910.1984.12708 (last access: 4 November 2023), 1984.
Olukcu, N., Yanik, J., Saglam, M., Yuksel, M., and Karaduman, M.: Solvent effect on the extraction of Beypazari oil shale, Energy Fuels, 13, 895–902, https://doi.org/10.1021/ef9802678, 1999.
Overland, I.: Future Petroleum Geopolitics: Consequences of Climate Policy and Unconventional Oil and Gas, Handb. Clean Energy Syst., 1–29, https://doi.org/10.1002/9781118991978.hces203, 2015.
Peters, K. E.: Guidelines for Evaluating Petroleum Source Rock Using Programmed Pyrolysis, Am. Assoc. Petrol. Geol. Bull., 70, 318–329, https://doi.org/10.1306/94885688-1704-11d7-8645000102c1865d, 1986.
Qi, Y., Ju, Y., Cai, J., Gao, Y., Zhu, H., Hunag, C., Wu, J., Meng, S., and Chen, W.: The effects of solvent extraction on nanoporosity of marine-continental coal and mudstone, Fuel, 235, 72–84, https://doi.org/10.1016/j.fuel.2018.07.083, 2019.
Qiu, X., Liu, C., Mao, G., Deng, Y., Wang, F., and Wang, J.: Late Triassic tuff intervals in the Ordos basin, Central China: Their depositional, petrographic, geochemical characteristics and regional implications, J. Asian Earth Sci., 80, 148–160, https://doi.org/10.1016/j.jseaes.2013.11.004, 2014.
Schuler, B., Meyer, G., Peña, D., Mullins, O. C., and Gross, L.: Unraveling the Molecular Structures of Asphaltenes by Atomic Force Microscopy, J. Am. Chem. Soc., 137, 9870–9876, https://doi.org/10.1021/jacs.5b04056, 2015.
Schuler, B., Fatayer, S., Meyer, G., Rogel, E., Moir, M., Zhang, Y., Harper, M. R., Pomerantz, A. E., Bake, K. D., Witt, M., Peña, D., Kushnerick, J. D., Mullins, O. C., Ovalles, C., Van Den Berg, F. G. A., and Gross, L.: Heavy Oil Based Mixtures of Different Origins and Treatments Studied by Atomic Force Microscopy, Energy Fuels, 31, 6856–6861, https://doi.org/10.1021/acs.energyfuels.7b00805, 2017.
Shaohui, G., Shuyuan, L., and Kuangzong, Q.: CS2/NMP extraction of immature source rock concentrates, Org. Geochem., 31, 1783–1795, https://doi.org/10.1016/S0146-6380(00)00126-1, 2000.
SY/T 5735-1995: The Oil and Gas Industry Standards of the People’s Repub-lic of China, Geochemical evaluation method of continental hydrocarbon source rocks, https://max.book118.com/html/2019/0831/5032240204002122.shtm (last access: 3 November 2023), 1995.
Tong, J., Han, X., Wang, S., and Jiang, X.: Evaluation of structural characteristics of huadian oil shale kerogen using direct techniques (Solid-state 13C NMR, XPS, FT-IR, and XRD), Energy Fuels, 25, 4006–4013, https://doi.org/10.1021/ef200738p, 2011.
Toolan, D. T. W., Isakova, A., Hodgkinson, R., Reeves-Mclaren, N., Hammond, O. S., Edler, K. J., Briscoe, W. H., Arnold, T., Gough, T., Topham, P. D., and Howse, J. R.: Insights into the influence of solvent polarity on the crystallization of poly(ethylene oxide) spin-coated thin films via in situ grazing incidence wide-angle X-ray scattering, Macromolecules, 49, 4579–4586, https://doi.org/10.1021/acs.macromol.6b00312, 2016.
Wang, Q., Ye, J. Bin, Yang, H. Y., and Liu, Q.: Chemical Composition and Structural Characteristics of Oil Shales and Their Kerogens Using Fourier Transform Infrared (FTIR) Spectroscopy and Solid-State 13C Nuclear Magnetic Resonance (NMR), Energy Fuels, 30, 6271–6280, https://doi.org/10.1021/acs.energyfuels.6b00770, 2016.
Wang, Q., Hou, Y., Wu, W., Niu, M., Ren, S., and Liu, Z.: The relationship between the humic degree of oil shale kerogens and their structural characteristics, Fuel, 209, 35–42, https://doi.org/10.1016/j.fuel.2017.07.077, 2017.
Wang, Y., Liu, L., and Cheng, H.: Pore structure of Triassic Yanchang mudstone, Ordos Basin: Insights into the impact of solvent extraction on porosity in lacustrine mudstone within the oil window, J. Petrol. Sci. Eng., 195, 107944, https://doi.org/10.1016/j.petrol.2020.107944, 2020.
Wei, L., Mastalerz, M., Schimmelmann, A., and Chen, Y.: Influence of Soxhlet-extractable bitumen and oil on porosity in thermally maturing organic-rich shales, Int. J. Coal Geol., 132, 38–50, https://doi.org/10.1016/j.coal.2014.08.003, 2014.
Yang, H., Zhou, P., Xiong, C., Yu, S., and Li, J.: Integrity Evaluation of Cement Ring during Fracturing and Flowback of Horizontal Well in Jimsar Shale Oil, Lithosphere, 4, 6519109, https://doi.org/10.2113/2021/6519109, 2021.
Yang, S., Qiao, H., Cheng, B., and Hu, Q.: Solvent extraction efficiency of an Eocene-aged organic-rich lacustrine shale, Mar. Petrol. Geol., 126, 104941, https://doi.org/10.1016/j.marpetgeo.2021.104941, 2021.
Yang, Z., Zou, C. N., Wu, S. T., Lin, S. H., Pan, S. Q., Niu, X. B., Men, G. T., Tang, Z. X., Li, G. H., Zhao, J. H., and Jia, X. Y.: Formation, distribution and resource potential of the “sweet areas (sections)” of continental shale oil in China, Mar. Petrol. Geol., 102, 48–60, https://doi.org/10.1016/j.marpetgeo.2018.11.049, 2019.
Zhao, X., Liu, Z., Lu, Z., Shi, L., and Liu, Q.: A study on average molecular structure of eight oil shale organic matters and radical information during pyrolysis, Fuel, 219, 399–405, https://doi.org/10.1016/j.fuel.2018.01.046, 2018.
Zhou, L., Zhao, X., Chai, G., Jiang, W., Pu, X., Wang, X., Han, W., Guan, Q., Feng, J., and Liu, X.: Key exploration & development technologies and engineering practice of continental shale oil: A case study of Member 2 of Paleogene Kongdian Formation in Cangdong Sag, Bohai Bay Basin, East China, Petrol. Explor. Dev., 47, 1138–1146, https://doi.org/10.1016/S1876-3804(20)60124-0, 2020.
Zhou, S., Yan, D., Tang, J., and Pan, Z.: Abrupt change of pore system in lacustrine shales at oil- and gas-maturity during catagenesis, Int. J. Coal Geol., 228, 103557, https://doi.org/10.1016/j.coal.2020.103557, 2020.
Short summary
Fourier transform infrared (FTIR) was performed on shale before and after solvent extraction. The extraction yield from shale with THF is higher than other solvents. The organic-C-normalized yield of a mature sample is higher than other samples. The aromaticity of organic matter increases, and the length of organic matter aliphatic chains does not vary monotonically with increasing maturity. The results will help in the selection of organic solvents for oil-washing experiments of shale.
Fourier transform infrared (FTIR) was performed on shale before and after solvent extraction....