{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T11:24:32Z","timestamp":1783337072881,"version":"3.54.6"},"reference-count":34,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T00:00:00Z","timestamp":1768953600000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development","award":["30200018-24-ZC0613-0156"],"award-info":[{"award-number":["30200018-24-ZC0613-0156"]}]},{"DOI":"10.13039\/501100001809","name":"National Natural Science Foundation of China","doi-asserted-by":"publisher","award":["52474029"],"award-info":[{"award-number":["52474029"]}],"id":[{"id":"10.13039\/501100001809","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Sinopec Key Scientific and Technological Research Project: Study on the Mechanism of CO2 High-Pressure Huff-and-Puff Enhanced Oil Recovery in Jiyang Shale Oil","award":["P25184"],"award-info":[{"award-number":["P25184"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Nanomaterials"],"abstract":"<jats:p>Shale oil reservoirs are complex multi-scale nanoporous media where fluid transport is governed by coupled micro-mechanisms, demanding a robust modeling framework. This study presents a novel fluid\u2013solid coupling (FSC) numerical model that rigorously integrates the three primary scale-dependent transport phenomena: adsorption in organic nanopores, slip effects in inorganic micropores, and stress-sensitive conductivity in fractures. The model provides essential quantitative insights into the dynamic interaction between fluid withdrawal and reservoir deformation. Simulation results reveal that microstructural properties dictate the reservoir\u2019s mechanical stability. Specifically, larger pore diameters and higher porosity enhance stress dissipation, promoting long-term stress relaxation and mitigating permeability decay. Crucially, tortuosity governs the mechanical response by controlling pressure transmission pathways: low tortuosity causes localized stress concentration, leading to rapid micro-channel closure, while high tortuosity ensures stress homogenization, preserving long-term permeability. Furthermore, high fracture conductivity induces a severe, heterogeneous stress field near the wellbore, which dictates early-stage mechanical failure. This work provides a powerful, mechanism-based tool for optimizing micro-structure and production strategies in unconventional resources.<\/jats:p>","DOI":"10.3390\/nano16020144","type":"journal-article","created":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T13:59:54Z","timestamp":1769003994000},"page":"144","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["Micro- and Nanoscale Flow Mechanisms in Shale Oil: A Fluid\u2013Solid Coupling Model Integrating Adsorption, Slip, and Stress Sensitivity"],"prefix":"10.3390","volume":"16","author":[{"given":"Zupeng","family":"Liu","sequence":"first","affiliation":[{"name":"State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, China"},{"name":"School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China"},{"name":"Exploration and Development Research Institute, Shengli Oilfield Company, SINOPEC, Dongying 257015, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0009-0006-6854-2481","authenticated-orcid":false,"given":"Zhibin","family":"Yi","sequence":"additional","affiliation":[{"name":"College of Petroleum Engineering, Yangtze University, Wuhan 430100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guanglong","family":"Sheng","sequence":"additional","affiliation":[{"name":"College of Petroleum Engineering, Yangtze University, Wuhan 430100, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Guang","family":"Lu","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, China"},{"name":"School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China"},{"name":"Exploration and Development Research Institute, Shengli Oilfield Company, SINOPEC, Dongying 257015, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xiangdong","family":"Xing","sequence":"additional","affiliation":[{"name":"State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Effective Development, Beijing 100083, China"},{"name":"School of Petroleum Engineering, China University of Petroleum (East China), Qingdao 266580, China"},{"name":"Exploration and Development Research Institute, Shengli Oilfield Company, SINOPEC, Dongying 257015, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Xinlong","family":"Zhang","sequence":"additional","affiliation":[{"name":"College of Petroleum Engineering, Yangtze University, Wuhan 430100, China"},{"name":"Shenzhen Branch of CNOOC (China) Co., Ltd., Shenzhen 518040, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,1,21]]},"reference":[{"key":"ref_1","first-page":"553","article-title":"Global shale oil development and prospects","volume":"24","author":"Yang","year":"2019","journal-title":"China Pet. Explor."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"100050","DOI":"10.59717\/j.xinn-energy.2024.100050","article-title":"Three-dimensional modeling of nanoconfined multiphase flow in clay nanopores using FIB-SEM images of shale","volume":"1","author":"Qin","year":"2024","journal-title":"Innov. Energy"},{"key":"ref_3","first-page":"604","article-title":"Productivity simulation and parameter analysis of shale oil production on radial wells based on horizontal wells","volume":"9","author":"Dai","year":"2024","journal-title":"Pet. Sci. Bul."},{"key":"ref_4","first-page":"57","article-title":"Multi-scale characterization of shale pore structure of Niutitang Formation in southeastern Guizhou and its influence on shale gas enrichmen","volume":"51","author":"Ge","year":"2024","journal-title":"Geol. China"},{"key":"ref_5","first-page":"1","article-title":"Progress and key scientific and technological problems of shale oil ex-ploration and development inChina","volume":"31","author":"Jia","year":"2024","journal-title":"World Pet. Ind."},{"key":"ref_6","first-page":"98","article-title":"Research progress of microscopic percolation mechanism of shale oil","volume":"46","author":"Wang","year":"2024","journal-title":"Pet. Geol. Exp."},{"key":"ref_7","first-page":"91","article-title":"Review of gas transport in nanopores in shale gas reservoirs","volume":"1","author":"Wu","year":"2016","journal-title":"Pet. Sci. Bull."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"17702","DOI":"10.1038\/s41598-025-02415-y","article-title":"Pore structure evolution and geological controls in lacustrine shale systems with implications for marine shale reservoir characterization","volume":"15","author":"Li","year":"2025","journal-title":"Sci. Rep."},{"key":"ref_9","unstructured":"Liu, Y. (2023). Research on Simulation of Pore Scale Fluid Flow and Seepage Law Considering Microscopic Force Effects. [Ph.D. Thesis, University of Science and Technology Beijing]."},{"key":"ref_10","doi-asserted-by":"crossref","first-page":"511","DOI":"10.1016\/j.petrol.2018.01.021","article-title":"Pore network modeling of the Non-Darcy flows in shale and tight formations","volume":"163","author":"Wang","year":"2018","journal-title":"J. Pet. Sci. Eng."},{"key":"ref_11","doi-asserted-by":"crossref","first-page":"683","DOI":"10.1016\/j.fuel.2019.03.083","article-title":"Pore-scale simulation of shale oil flow based on pore network model","volume":"251","author":"Yang","year":"2019","journal-title":"Fuel"},{"key":"ref_12","doi-asserted-by":"crossref","unstructured":"Xiong, H., Devegowda, D., Yuan, N., and Hu, Z. (2024). The Behavior of Microemulsion in Unconventional Reservoirs: Insights from Molecular Dynamics Simulation. Proceedings of the SPE Annual Technical Conference and Exhibition, SPE.","DOI":"10.2118\/220724-MS"},{"key":"ref_13","doi-asserted-by":"crossref","first-page":"123549","DOI":"10.1016\/j.molliq.2023.123549","article-title":"Adsorption behavior of shale oil and water in the kerogen-kaolinite pore by molecular simulations","volume":"393","author":"Yang","year":"2024","journal-title":"J. Mol. Liq."},{"key":"ref_14","first-page":"1284","article-title":"Research progress of mumerical simulation models for shale gas reservoirs","volume":"46","author":"Wang","year":"2019","journal-title":"Geol. China"},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"107127","DOI":"10.1016\/j.compgeo.2025.107127","article-title":"A novel fluid-solid coupling method for fractured reservoirs: 3D DDM-EDFM integration with proppant mechanics","volume":"181","author":"Huang","year":"2025","journal-title":"Comput. Geotech."},{"key":"ref_16","unstructured":"Wang, Y. (2024). Molecular Dynamics Investigation of Micro-Flow Mechanism of Shale Oil. [Master\u2019s Thesis, Shandong University]."},{"key":"ref_17","first-page":"1346","article-title":"A new method for physical simulation of flow characteristics of fuids in shale oil reservoirs","volume":"42","author":"Lei","year":"2021","journal-title":"Acta Pet. Sin."},{"key":"ref_18","unstructured":"Sang, X. (2017). Experimental Methods and Effective Production Conditions of Shale Oil and Gas. [Ph.D. Thesis, China University of Petroleum (East China)]."},{"key":"ref_19","first-page":"70","article-title":"Low-velocity Seepage Characteristics of Single-phase Fluid in Shale Reservoir","volume":"28","author":"Li","year":"2021","journal-title":"Spec. Oil Gas Reserv."},{"key":"ref_20","first-page":"247","article-title":"Microscale Flow Characteristics and Stress Sensitivity Analysis in Shale Oil Reservoirs","volume":"28","author":"Zhao","year":"2021","journal-title":"Fault-Block Oil Gas Field"},{"key":"ref_21","first-page":"157","article-title":"Characteristics of micro-and nano-pores in shale oil reservoirs","volume":"11","author":"Xia","year":"2021","journal-title":"J. Pet. Explor. Prod."},{"key":"ref_22","doi-asserted-by":"crossref","first-page":"212317","DOI":"10.1016\/j.geoen.2023.212317","article-title":"Micro-nano scale confined flow characteristics and mechanism in tight reservoir: Insights from experimental and molecular simulation studies","volume":"231","author":"Chang","year":"2023","journal-title":"Geoenergy Sci. Eng."},{"key":"ref_23","first-page":"28","article-title":"Finite Difference Methods for Darcy Flow in Fracture Porous Media","volume":"44","author":"Chen","year":"2019","journal-title":"J. Southwest China Norm. Univ. (Nat. Sci. Ed.)"},{"key":"ref_24","first-page":"276","article-title":"Study on Stress Sensitivity of Ordovician fractures in Hetianhe Gas Field, Tarim Basin","volume":"25","author":"Feng","year":"2019","journal-title":"J. Geol. Chin. Univ."},{"key":"ref_25","first-page":"579","article-title":"Research progress on characterization and simulation of shale oil flow in microscale","volume":"38","author":"Su","year":"2021","journal-title":"J. Shenzhen Univ. Sci. Eng."},{"key":"ref_26","doi-asserted-by":"crossref","first-page":"226101","DOI":"10.1103\/PhysRevLett.101.226101","article-title":"Water slippage versus contact angle: A quasi universal relation-ship","volume":"101","author":"Huang","year":"2008","journal-title":"Phys. Rev. Lett."},{"key":"ref_27","doi-asserted-by":"crossref","first-page":"3461","DOI":"10.1016\/j.petsci.2023.07.015","article-title":"A transient model integrating the nanoconfinement effect and pore structure characteristics of oil transport through nanopores","volume":"20","author":"Cao","year":"2023","journal-title":"Pet. Sci."},{"key":"ref_28","doi-asserted-by":"crossref","first-page":"741","DOI":"10.1016\/j.fuel.2016.05.057","article-title":"Fast mass transport of oil and supercritical carbon dioxide through organic nanopores in shale","volume":"181","author":"Wang","year":"2016","journal-title":"Fuel"},{"key":"ref_29","doi-asserted-by":"crossref","first-page":"036604","DOI":"10.1063\/5.0189863","article-title":"Seepage disturbance mechanism and interface force of cylindrical barrier in fracture","volume":"36","author":"Ma","year":"2024","journal-title":"Phys. Fluids"},{"key":"ref_30","unstructured":"Yan, X. (2019). Hydro-Mechanical Coupling Simulation and Its Application to Shale Gas Reservoirs. [Ph.D. Thesis, China University of Petroleum (East China)]."},{"key":"ref_31","doi-asserted-by":"crossref","first-page":"6948726","DOI":"10.1155\/2018\/6948726","article-title":"Triple-porosity modelling for the simulation of multiscale flow mechanisms in shale reservoirs","volume":"2018","author":"Wei","year":"2018","journal-title":"Geofluids"},{"key":"ref_32","first-page":"23","article-title":"Research progress and prospect of pore structure representation and seepage law of continental shale oil reservoir","volume":"13","author":"Wang","year":"2023","journal-title":"Pet. Reserv. Eval. Dev."},{"key":"ref_33","doi-asserted-by":"crossref","first-page":"720","DOI":"10.1016\/S1876-3804(17)30083-6","article-title":"Characterization of micro-nano pore networks in shale oil reservoirs of Paleogene Shahejie Formation in Dongying Sag of Bohai Bay Basin, East China","volume":"44","author":"Hu","year":"2017","journal-title":"Petroleum Explor. Dev."},{"key":"ref_34","doi-asserted-by":"crossref","first-page":"1681","DOI":"10.1190\/1.1442980","article-title":"Petrophysical characteristics of shales from the Scotian shelf","volume":"56","author":"Katsube","year":"1991","journal-title":"Geophysics"}],"container-title":["Nanomaterials"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2079-4991\/16\/2\/144\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2026,1,21]],"date-time":"2026-01-21T14:24:27Z","timestamp":1769005467000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2079-4991\/16\/2\/144"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2026,1,21]]},"references-count":34,"journal-issue":{"issue":"2","published-online":{"date-parts":[[2026,1]]}},"alternative-id":["nano16020144"],"URL":"https:\/\/doi.org\/10.3390\/nano16020144","relation":{},"ISSN":["2079-4991"],"issn-type":[{"value":"2079-4991","type":"electronic"}],"subject":[],"published":{"date-parts":[[2026,1,21]]}}}