An Improved Model Of Trans-Critical Ch4 And Co2 Adsorption In Coals Based On Monolayer Adsorption And Adsorption Potential Theories,
2026
State Key Laboratory of Digital Intelligent Technology for Unmanned Coal Mining, Anhui University of Science & Technology, Huainan 232001, China
An Improved Model Of Trans-Critical Ch4 And Co2 Adsorption In Coals Based On Monolayer Adsorption And Adsorption Potential Theories, Song Xuemei, Zhang Kun, Sang Shuxun, Ma Mengya, Liu Huihu, Xu Hongjie
Coal Geology & Exploration
Objective and Method Adsorbed phase density represents a key parameter for determining gas adsorption capacity in coals. Using bituminous coal samples from the Huainan and Huaibei mining areas in Anhui Province, this study carried out high-pressure isothermal adsorption experiments of CO2 and CH4 at temperatures of 24 ℃, 36 ℃, and 48 ℃. In combination with the quantitative characterization of pore structures in coals using low-temperature liquid nitrogen adsorption (LNA) experiments and mercury intrusion porosimetry (MIP), this study analyzed the high-pressure trans-critical CH4 and CO2 adsorption processes in coals. Meanwhile, based on the Gibbs excess adsorption, …
A Method Of Carbon Emission Accounting And Pathways Of Emission Reduction Through Reduction Through Ccus For Underground Coal Mines,
2026
Jiangsu Key Laboratory of Coal-based Greenhouse Gas Control and Utilization, Xuzhou 221116, China; Key Laboratory of Coalbed Methane Resources & Reservoir Formation Process, Ministry of Education, Xuzhou 221008, China; School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China
A Method Of Carbon Emission Accounting And Pathways Of Emission Reduction Through Reduction Through Ccus For Underground Coal Mines, Xu Shen, Wang Meng, Dai Xuguang, Qiu Yuxin, Tuo Jialong, Li Wenhao, Gao Jie
Coal Geology & Exploration
Objective Coal production and utilization lead to substantial carbon emissions, and the carbon emissions from underground coal mines have attracted increasing attention. However, research on emission reduction pathways in coal mines remains nascent. Methods The Y Coal Mine was investigated in this study. Using methods including life cycle assessment (LCA), emission factor approach, and monitoring, this study identified the boundaries for carbon emission accounting and determined the sources, total amount, and characteristics of carbon emissions from the coal mine. Furthermore, a framework of carbon emission reduction through CCUS was established based on the principle of carbon capture, utilization, and storage …
Research Advances And Prospects Of Geologic Co2 Sequestration Models,
2026
School of Geology and Mining Engineering, Xinjiang University, Urumqi 830017, China; Xinjiang Key Laboratory for Geodynamic Processes and Metallogenic Prognosis of the Central Asian Orogenic Belt, Xinjiang University, Urumqi 830017, China
Research Advances And Prospects Of Geologic Co2 Sequestration Models, Hu Chenlin, Dong Cheng, Sang Shuxun, Tang Yong, Li Xin, Zhang Bin, Zhao Lingfeng
Coal Geology & Exploration
Background The urgent need to respond to global climate change and to achieve carbon neutrality is driving geologic CO2 sequestration technology to be increasingly large-scale, safe, and intelligent. Since the CO2 sequestration process involves multi-physical field coupling, the engineering feasibility and long-term safety of CO2 sequestration heavily rely on the capacity of numerical models to perform accurate characterization of complex subsurface processes. Therefore, establishing a model system, covering the entire process consisting of injection, migration, sequestration, and monitoring, that is suitable for various geobodies for CO2 sequestration has emerged as a foundation for the engineering application …
Distribution Characteristics And Mechanisms Of Ch4 And Co2 Adsorption In Montmorillonite Nanopores In Water-Bearing And Saline Environments,
2026
State Key Laboratory of Petroleum Resources and Engineering, China University of Petroleum (Beijing), Beijing 102249, China; College of Petroleum Engineering, China University of Petroleum (Beijing), Beijing 102249, China
Distribution Characteristics And Mechanisms Of Ch4 And Co2 Adsorption In Montmorillonite Nanopores In Water-Bearing And Saline Environments, Du Kai, Rui Zhenhua, Qian Cheng, Chen Siwei
Coal Geology & Exploration
Background Carbon capture, utilization, and storage (CCUS) has emerged as a significant way to reduce greenhouse gas emissions under the guidance of the strategic goals of peak carbon dioxide emissions and carbon neutrality. With the continuous exploitation of unconventional hydrocarbon resources such as shale oil and gas, varying water-bearing and salinity conditions exert significant impacts on the occurrence stability and seepage behavior of CO2, thereby reducing the efficiency and safety of CO2 storage. Therefore, a thorough understanding of the competitive behavior and distribution patterns of CO2 and other gases in shale nanopores under varying water-bearing and …
Advances In Research On The In Situ Co2 Mineral Trapping In Buried Volcanoes,
2026
School of Mining Engineering, Jiangxi University of Science and Technology, Ganzhou 341000, China
Advances In Research On The In Situ Co2 Mineral Trapping In Buried Volcanoes, He Yanxin, Tian Wei, Xian Benzhong, Liu Pingping, Wei Mingcong, Wei Qiwen, Deng Xuanyu, Liu Jianping, Gu Jiapeng
Coal Geology & Exploration
Objective and Methods Driven by the goal of carbon neutrality, geologic CO2 storage has become a critical national priority in China. Compared to conventional reservoirs in sedimentary basins, such as saline aquifers, depleted hydrocarbon reservoirs, and unmineable coal seams, basaltic formations offer more significant advantages in geologic CO2 storage. Specifically, basaltic formations can form stable carbonates through reactions between CO2 and rock minerals while also exhibiting extensive distribution, considerable potential for CO2 storage, and low risk of CO2 leakage. The engineering feasibility of geologic CO2 storage in basaltic formations has been validated by the …
Multi-Scale Source-Sink Matching And Transportation Route Optimization For Geologic Co2 Sequestration Of Industrial Co2 Stationary Sources In Jiangsu Province,
2026
School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China; Key Laboratory of Coalbed Methane Resources & Reservoir Formation Process, Ministry of Education, China University of Mining and Technology, Xuzhou 221116, China
Multi-Scale Source-Sink Matching And Transportation Route Optimization For Geologic Co2 Sequestration Of Industrial Co2 Stationary Sources In Jiangsu Province, Tian Yuchen, Liu Shiqi, Zhang Helong, Mo Hang, Wang Dexi, Sang Shuxun, Wang Jun, Wang Wenkai, Zheng Sijian
Coal Geology & Exploration
Objective CO2 stationary sources tend to show a dispersed distribution, while carbon sinks are concentrated in specific sedimentary basins. The resulting significant source-sink mismatch in space restricts the large-scale applications of carbon capture, utilization, and storage (CCUS) technology. Therefore, reducing CCUS costs by investigating source-sink matching and optimizing CO2 transportation routes under a multi-scale spatial framework is the key to the engineering applications of CCUS. Methods Targeting representative industrial CO2 stationary sources and carbon sinks in Jiangsu Province, this study established source-sink matching models on multiple scales covering hydrocarbon reservoirs, sags, and basins. Based on both the …
Reaction Mechanisms During Co2 Absorption In Ethanolamine Solutions,
2026
Xinjiang Oilfield Company, Karamay 834000, China
Reaction Mechanisms During Co2 Absorption In Ethanolamine Solutions, Teng Weiwei, Wu Yan, Fan Yuxin, Liao Tao, Wang Zicheng, Yu Hui, Li Meng, Xu Xiaoling
Coal Geology & Exploration
Objective Presently, CO2 capture technology based on the ethanolamine solutions suffers from drawbacks such as high energy consumption and elevated costs. A primary method to address these challenges is to construct blended amine solutions by synergistically integrating the absorption and desorption advantages of different types of ethanolamines. Hydroxyethyl ethylenediamine (AEEA) and N-methyldiethanolamine (MDEA) represent two major commonly used absorbents, and their blending necessitates an accurate understanding of their CO2 absorption patterns, including CO2 loading capacity, the ion-concentration distribution patterns of reaction products, and reaction orders. Currently, their absorption mechanisms remain poorly understood, and there is a lack …
Performance And Carbonation Mechanisms Of Multi-Source Solid Waste-Based Carbon-Sequestering Backfill Materials For Coal Mines,
2026
School of Energy Science and Engineering, Henan Polytechnic University, Jiaozuo 454003, China
Performance And Carbonation Mechanisms Of Multi-Source Solid Waste-Based Carbon-Sequestering Backfill Materials For Coal Mines, Guo Qingwen, Li Dongyin, Wang Shen, Liu Songhui, Li Quanjiang, Li Song
Coal Geology & Exploration
Objective The reutilization of solid waste such as coal gangue and steel slag is critical to green mining. Preparing solid waste-based carbon-sequestering backfill materials and then filling them into coal mine goaves emerge as an important approach to solid waste utilization, carbon emission reduction, and green coal mining.Methods Based on the designed mix proportions of a high-solid-waste system consisting of steel slag and coal gangue, in which steel slag was used to compensate for the insufficient carbonation reactivity of coal gangue, this study prepared solid waste-based backfill material samples composed of coal gangue, steel slag, and cement. Through mechanical …
Evolutionary Mechanisms Of Nanopores And Adsorption Capacity In Shales Under Scco2-Water-Rock Interactions,
2026
Key Laboratory of Coalbed Methane Resources & Reservoir Formation Process, Ministry of Education, China University of Mining and Technology, Xuzhou 221008, China; School of Resources and Geosciences, China University of Mining and Technology, Xuzhou 221116, China
Evolutionary Mechanisms Of Nanopores And Adsorption Capacity In Shales Under Scco2-Water-Rock Interactions, Feng Guangjun, Wang Meng, Zhu Yanming, Song Yu, Dai Xuguang, Zheng Sijian, Xie Hong, Shang Fuhua
Coal Geology & Exploration
Background Supercritical carbon dioxide (ScCO2 )-enhanced shale oil and gas recovery serves as an effective approach to geologic CO2 sequestration. Injecting ScCO2 into shale reservoirs can trigger complex ScCO2-water-rock interactions, thereby altering the material composition, nanopore structure, and adsorption capacity of shales. Examining their evolutionary processes represents a critical scientific issue in the evaluation of CO2 sequestration efficiency. Methods This study investigated the shales of the Longmaxi Formation in the southeastern Chongqing area. Through simulation experiments on ScCO2-water-rock interactions and by integrating X-ray diffraction (XRD), low-pressure CO2/N2 adsorption, fractal …
Huff-N-Puff Experiments Of Mixed Co2 And Formation Water For Enhanced Oil Recovery Of Shale Oil In The Subei Basin,
2026
State Key Laboratory of Shale Oil and Gas Enrichment Mechanisms and Efficient Development, Beijing 102206, China; Petroleum Exploration and Production Research Institute, SINOPEC, Beijing 102206, China
Huff-N-Puff Experiments Of Mixed Co2 And Formation Water For Enhanced Oil Recovery Of Shale Oil In The Subei Basin, Xiao Pufu, Zhang Jie, Yang Zhengmao, Wang Rui, Cui Maolei, Lei Mengmeng, Tian Yunfei, Zeng Jun, Liu Yuwei
Coal Geology & Exploration
Objective In the Subei Basin, the depletion-drive development of shale oil following reservoir volume fracturing faces challenges such as rapid production decline and low oil recovery. To address these issues, this study explored an experimental method of CO2 + formation water (also referred to as carbonated water) huff and puff for enhanced oil recovery (EOR) by combining the felsic, clayey, and organic-rich characteristics of shale oil reservoirs in the Subei Basin, along with CO2 high pressure quality exchange technology. Methods Through multiple physical simulation experiments in the laboratory, combined with nuclear magnetic resonance (NMR) experiment technology, this study …
Advances In Research On Co2 Corrosion Mechanisms, Modification, And Application Of Cements For Injection Wells In Geologic Co2 Sequestration,
2026
Shanghai Offshore Oil & Gas Company, SINOPEC, Shanghai 200120, China
Advances In Research On Co2 Corrosion Mechanisms, Modification, And Application Of Cements For Injection Wells In Geologic Co2 Sequestration, Hao Feng, Zhang Zongfeng, Wang Hongmin, Du Shuai, Huang Da, Yang Xuefeng, Wang Kexin, Zhang Yu
Coal Geology & Exploration
Background and Merhod The wellbore integrity of CO2 injection wells plays a critical role in maintaining the long-term safe operation of geologic CO2 sequestration (GCS) projects. Well cement serves as the foremost wellbore integrity barrier, and its durability under GCS has emerged as a hot research topic both at home and abroad. This study systematically reviews the advances in research on the chemical corrosion mechanism of well cement under the operating conditions of GCS, technologies for cement modification for enhanced resistance to CO2 corrosion, and non-Portland cement systems. Furthermore, the directions for the future development of well …
Numerical Simulation Of Co2 Sequestration Combined With Enhanced Geothermal Energy Extraction In Deep Saline Aquifers,
2026
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China
Numerical Simulation Of Co2 Sequestration Combined With Enhanced Geothermal Energy Extraction In Deep Saline Aquifers, Xie Zehao, Zhang Liehui, Zhao Yulong, Cao Cheng, Kou Zuhao, Zhang Deping, Li Jinlong
Coal Geology & Exploration
Objectives and Methods Deep saline aquifers represent ideal spaces for geologic CO2 sequestration while also featuring high geothermal gradients and abundant geothermal resources. The combination of CO2 sequestration and geothermal energy extraction holds great significance for enhancing the CO2 sequestration effect and achieving integrated resource development of deep saline aquifers. Therefore, this study proposed a development approach that combined CO2 sequestration with geothermal energy extraction in deep saline aquifers and established a thermo-hydro-chemical coupling numerical simulation model of the gas-water two-phase flow. Accordingly, it explored the optimal injection mode, production and injection well patterns, and injection …
Numerical Simulations Of The Safety Of Geologic Co2 Storage In Saline Aquifers In The Enping Sag, Pearl River Mouth Basin,
2026
Key Laboratory of Ocean Energy Utilization and Energy Conservation of Ministry of Education, Dalian University of Technology, Dalian 116024, China
Numerical Simulations Of The Safety Of Geologic Co2 Storage In Saline Aquifers In The Enping Sag, Pearl River Mouth Basin, Yu Tao, Li Xiwen, Yang Yunshi, Chen Bingbing, Ji Zemin, He Chang, Jiang Lanlan, Song Yongchen
Coal Geology & Exploration
Background Since the beginning of the Industrial Revolution, excessive CO2 emissions have aggravated the greenhouse effect. Against this backdrop, CO2 capture, utilization, and storage (CCUS) technology has emerged as a critical countermeasure. Particularly, geologic CO2 storage holds enormous application potential. China has implemented a demonstration project of geologic CO2 storage in saline aquifers located in the Enping Sag, Pearl River Mouth Basin. Nevertheless, this sag exhibits formation dip angles and widely distributed fracture zones, which affect CO2 migration and storage. Methods Focusing on the Enping Sag, this study established a two-dimensional model of the saline …
Advances And Prospects Of Research On In Situ Co2 Mineralization Storage In Basalts,
2026
State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China; Petroleum Engineering School, Southwest Petroleum University, Chengdu 610500, China
Advances And Prospects Of Research On In Situ Co2 Mineralization Storage In Basalts, Wang Xiao, Wu Bin, Shi Xiangchao, Ye Zhongbin, Wei Bing, Wang Guanhua, Alvarado Vladimir, Huang Kailin, Yang Zeyong
Coal Geology & Exploration
Background CO2 storage in basalts, enjoying distinct advantages of rapid mineralization and high safety, has gradually emerged as a hot research topic both in China and abroad. This study presents a systematic review of the current status of research on the mechanisms of in situ CO2 mineralization storage, the evolutionary characteristics of the physical properties of strata under the condition of mineralization reactions, and representative demonstration projects. On this basis, the future research directions are proposed. Advances The in situ CO2 mineralization storage in basalts is essentially a process of CO2-water-rock reactions, achieved primarily through …
Research On Energy Security Governance And Preventive Measures In China Under Century Long Changes,
2026
Institutes of Science and Development, Chinese Academy of Sciences, Beijing 100190, China; School of Public Policy and Management, University of Chinese Academy of Sciences, Beijing 100049, China
Research On Energy Security Governance And Preventive Measures In China Under Century Long Changes, Qiang Ji, Ying Fan, Yu Song
Bulletin of Chinese Academy of Sciences (Chinese Version)
Against the backdrop of unprecedented changes in a century, multidimensional internal and external risks are intertwined and stacked, and energy security is constantly developing towards diversification, integration, and globalization. Balancing energy security and climate governance under the “dual carbon” goal is bound to encounter many major challenges, and climate issues have become an important part of the energy security concept that cannot be ignored. This study comprehensively analyzes the internal and external multidimensional risks faced by China’s energy security, and elaborates on the new energy security governance system of “one body, two wings, three ends, and four characteristics” from the …
Systemic Risks Analysis In International Crude Oil Market: Evidence And Countermeasures,
2026
Business School, Hunan University, Changsha 410082, China; Center for Resource and Environmental Management, Hunan University, Changsha 410082, China
Systemic Risks Analysis In International Crude Oil Market: Evidence And Countermeasures, Han Zhang, Yuejun Zhang
Bulletin of Chinese Academy of Sciences (Chinese Version)
Crude oil, often referred to as the “lifeblood” of the modern economy, plays a pivotal role in global economic stability and energy security. However, with the recurrence of crises in recent years, such as the the Russia-Ukraine conflict, escalating tensions in the Middle East, and intensifying trade frictions, the international crude oil market has been facing complex systemic risks, which are accelerated by persistent geopolitical conflicts, fragile supply-demand structures, and the intertwining of macroeconomic and financial uncertainties and so on. For China, with crude oil import dependence remaining above 70% for a prolonged period, economic and social development faces the …
Strategies For Enhancing China’S Energy Resilience: Trade-Offs Between Diversification And Localization,
2026
School of Public Policy and Management, University of Chinese Academy of Sciences, Beijing 100049, China
Strategies For Enhancing China’S Energy Resilience: Trade-Offs Between Diversification And Localization, Zhongwei Song, Yu Zhao, Xiang Gao, Jiaofeng Pan
Bulletin of Chinese Academy of Sciences (Chinese Version)
In recent years, intensified geopolitical conflicts worldwide have increasingly exposed the vulnerabilities of traditional energy security frameworks, necessitating a shift in perspective from “ensuring stable supply” to “building systemic resilience”. This study explores pathways to enhance China’s energy resilience, analyzes how diversification and localization strategies can strengthen national energy security, and reviews related policy practices. Building on this analysis and considering China’s current energy landscape, the study proposes that in the short term, emphasis should be placed on diversifying import sources and routes while strengthening domestic supply assurance. In the medium to long term, it is essential to accelerate the …
Technology Competition Risk Situation And Response Strategies In China’S Energy Sector Under Great Power Competition,
2026
School of Economics and Management, University of Chinese Academy of Sciences, Beijing 100190, China; CAS Research Center on Fictitious Economy & Data Science, Chinese Academy of Sciences, Beijing 100190, China
Technology Competition Risk Situation And Response Strategies In China’S Energy Sector Under Great Power Competition, Yong Shi, Shanghua Li, Fei Wu, Kun Guo
Bulletin of Chinese Academy of Sciences (Chinese Version)
With the advancement of the global energy transition and the intensification of global geopolitical uncertainties, technological competition in the energy sector has become a key area in the great power competition. This study constructs a logical framework for energy technology competition and reveals the new trends in current technological competition in the energy sector. On this basis, this study systematically analyzes the three main types of risks that China faces in energy technology competition and further proposes corresponding countermeasures. China must continuously enhance the core competitiveness and institutional voice over energy technology to achieve the strategic goals of energy security …
Internal Logic And Reform Suggestions Of Fiscal And Taxation Policies Supporting Construction Of New Energy System,
2026
School of Public Policy & Management, Tsinghua University, Beijing 100084, China
Internal Logic And Reform Suggestions Of Fiscal And Taxation Policies Supporting Construction Of New Energy System, Junming Zhu, Bofeng Li, Jiali Wang
Bulletin of Chinese Academy of Sciences (Chinese Version)
Building a clean, low-carbon, safe and efficient new energy system is a core strategy for China to achieve its “dual carbon” goals and promote high-quality development. This endeavor involves not only technological innovation in energy production and consumption but also requires guidance and support from the national governance system. As a key instrument of modern national governance, the fiscal and taxation policies serve as a crucial way to guide energy production and consumption, promote technological innovation, and adjust the distribution of interests. In light of the current multidimensional goals of energy transition—particularly the inherent tension between “clean and low-carbon” and …
Market-Oriented Reform In China’S Oil And Gas Industry: Current Dynamics And Strategic Pathways,
2026
Teaching and Research Department of Regional Economics, Sichuan Administration Institute, Chengdu 610072, China
Market-Oriented Reform In China’S Oil And Gas Industry: Current Dynamics And Strategic Pathways, Min Shi, Yuan Xue, Xunpeng Shi, Dayong Zhang
Bulletin of Chinese Academy of Sciences (Chinese Version)
China’s oil and gas market-oriented reform, developed through decades of exploration, has established a structure featuring multi-entity exploration in the upstream, independent operation of the national pipeline network in the midstream, and diversified competition in the downstream. Nevertheless, systemic challenges persist. A highly concentrated supply structure poses risks to energy security, while inadequate competition and limited market openness constrain operational efficiency. The green transition is hampered by insufficient policy coordination and economic viability barriers, and R&D transformation bottlenecks impede technological innovation. Furthermore, regional disparities in public service provision undermine social equity. Resolving these contradictions necessitates a systematic approach to reconfigure …
