Unconventional Resources最新文献

{"title":"Governmental effectiveness in the transition to a circular economy: Dynamic DEA model","authors":"Svetlana V. Ratner ,&nbsp;Andrey V. Lychev ,&nbsp;Vladimir E. Krivonozhko ,&nbsp;Svetlana A. Balashova","doi":"10.1016/j.uncres.2025.100161","DOIUrl":"10.1016/j.uncres.2025.100161","url":null,"abstract":"<div><div>This study applies Data Envelopment Analysis (DEA) model to the problem of assessing the results of government support of transition to a circular economy development in 27 EU countries in 2014–2021. The performance of governments is evaluated in terms of creating conditions for the development of cost-effective business models and technologies that can operate without permanent incentives and benefits from the state. This approach differs from the models popular in the current literature, which assess the efficiency of the circular economy primarily in terms of improved environmental performance. Calculations show that the most efficient models of circular economy are created by Austria, France, Germany, Italy, Luxembourg, Malta, and Sweden.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100161"},"PeriodicalIF":0.0,"publicationDate":"2025-03-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143696982","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Service charge-based benefit function in the multi microgrids by creating optimal coalition and employing demand response programs","authors":"Ramin Pouyan,&nbsp;Mohammad Tolou Askari,&nbsp;Meysam Amirahmadi,&nbsp;Vahid Ghods","doi":"10.1016/j.uncres.2025.100169","DOIUrl":"10.1016/j.uncres.2025.100169","url":null,"abstract":"<div><div>By appearing and introducing restructured power system concept, traditional vertical power system is converted to the locally generation units or the collection of generation units, storage units and loads as microgrid (MG). To better power supplying and eliminating the requisition to the installing new power plant, utilizing multi-MG is the best choice. This aim needs to use the electrical infrastructure of distribution network (DN). To make it feasible and economical, MG operators should pay costs to utilizing DN operator's (DNO)electrical infrastructure. This cost is introduced as service charge. In this work, the main function is defined as total benefits of MGs. In the benefit function, service charge costs are considered. To increase the total benefits of MGs and supply loads energy demands, creating coalition among MGs is considered. Furthermore, to increase the total benefits of MGs and DNO demand response programs (DR) are employed. Shapely value method is used to solve benefit function. In case without coalition among MGs, and with employing DR programs, in the residential-based DR programs, MGs total benefits increase 12 %, complex building base load MGs total benefits increase 24 % and industrial-based MG's benefits increase 18 %. In the case with creating coalition, these values are changed to 27 %, 38 % and 23 %, respectively.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100169"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682754","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Sorption capacity evaluation of industrial flue gas mixture using South African coal seams: Conventional and ANN modelling","authors":"Kasturie Premlall,&nbsp;Lawrence Koech,&nbsp;Douw Faurie","doi":"10.1016/j.uncres.2025.100168","DOIUrl":"10.1016/j.uncres.2025.100168","url":null,"abstract":"<div><div>This study investigates the sorption efficiency of synthetic flue gas compared to pure CO₂ in two South African coal seams. The samples, designated AN and TD, represent distinct coal ranks, with AN being a high-rank coal (2.91 % vitrinite reflectance) and TD a medium-rank coal (1.26 % vitrinite reflectance). The experiments involved a high-pressure volumetric adsorption method to evaluate the adsorption capacities of pure CO₂ and a synthetic flue gas mixture (21 % CO₂, 4 % O₂, 0.03 %SO₂ and 74.97 % N₂) at temperatures of 35 °C and 65 °C, and pressures up to 87 bar. The results indicate a significant effect of temperature on CO₂ adsorption in flue gas, with a substantial drop of 49 % and 37 % observed for AN and TD coals samples, respectively, at 65 °C compared to 35 °C. Both coal samples exhibit a high adsorption preference for CO₂ in flue gas, with AN showing greater affinity across all operating conditions. The presence of flue gas components significantly impacted CO₂ adsorption, causing reductions of 94 % for AN and 91 % for TD at 35 °C. AN coal (high rank) showed superior adsorption capacity for all flue gas components, attributed to its favourable properties including high inertinite content, low moisture content and low ash content offering minimal adsorption hindrance. This study evaluated multi-component adsorption using the Extended Langmuir and Modified Competitive Langmuir isotherm models. Both models effectively captured the experimental data, demonstrating preferential CO₂ adsorption as reflected by higher maximum adsorption capacity across all scenarios. Additionally, artificial neural network modelling of the adsorption data demonstrated a strong fit with the experimental data, yielding low MSE values and R² values above 0.99 for training, validation and testing. This study aims to evaluate CO₂ selectivity in a multi-component flue gas adsorption system in South African coals and explore the feasibility of direct flue gas injection into coal seams.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100168"},"PeriodicalIF":0.0,"publicationDate":"2025-03-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143682749","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Discussion on influencing factors of hydrocarbon generation in deep source rocks: A case study of Bozhong Sag, Bohai Bay basin","authors":"Liwen Zhu ,&nbsp;Zhenliang Wang ,&nbsp;Feilong Wang ,&nbsp;Yuanyuan Tian","doi":"10.1016/j.uncres.2025.100166","DOIUrl":"10.1016/j.uncres.2025.100166","url":null,"abstract":"<div><div>Deep layer, deep water, and unconventional areas are the inevitable trend of oil and gas exploration and development in the world. Hydrocarbon generation and accumulation are significant and challenging topics in deep oil and gas exploration, particularly in the context of the geological setting characterized by high temperature and pressure in deep layers. This study introduces an innovative approach by utilizing the findings from hydrogenation thermal simulation experiments to constrain the hydrocarbon generation kinetics parameters within the basin simulation process. By integrating these results with geochemical characteristics, key factors such as paleo-lake salinity, high temperature, excess pressure, and deep hydrogen-rich fluids were analyzed, revealing the unique characteristics of hydrocarbon generation evolution in the deep Paleogene source rocks of Bozhong Sag. It is found that salinization of lacustrine basin is beneficial to the enrichment of organic matter and the formation of high-quality source rocks. The high temperature is favorable to the thermal evolution of source rocks and hydrocarbon generation of organic matter, and it also leads to the cracking of hydrocarbons and affects the phase state of hydrocarbons. Excess pressure is conducive to the expulsion and migration of hydrocarbons and is the driving force of hydrocarbon migration and accumulation. Hydrogenation effect of deep hydrogen-rich fluids, especially near deep-seated faults, significantly improves the hydrocarbon generation potential of source rocks. The hydrogenation thermal simulation experiment has strongly confirmed this viewpoint, and with sufficient external hydrogen, the total hydrocarbon production can be increased by 2.5–3.2 times.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100166"},"PeriodicalIF":0.0,"publicationDate":"2025-03-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143642798","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Adopting internet project management to achieve sustainable development goals in the context of energy transition","authors":"Svetlana Revinova,&nbsp;Inna Lazanyuk","doi":"10.1016/j.uncres.2025.100158","DOIUrl":"10.1016/j.uncres.2025.100158","url":null,"abstract":"<div><div>The article analyzes the combination of the main components of sustainable development goals that affect energy transition with the principles of Internet project management. The main gaps in methodological approaches to achieving sustainable development goals and project management are identified. The business processes of the largest Internet projects of international companies Alibaba, Amazon, Yandex, aimed at achieving sustainable development goals are analyzed. Recommendations for Internet projects have been developed, which are systematized into 2 groups of business processes: related to online and offline components of the activity. The developed recommendations are aimed at the need for a deeper specification of the priorities and goals of the project. During the assessment of the developed recommendations, it was revealed that the proposals for managing an Internet project in the context of achieving sustainable development goals and energy transition are mainly aimed at ensuring the correct and effective operation of the main element of the electronic project – the platform (website, application). The recommendations developed are of a general nature for all project management and may differ and be modified depending on the scale of the project, the scope of activity, legislation, the presence of certain problems or prospects of the region of presence. However, the application of a number of such actions and measures will improve the sustainability of the project itself, reduce its impact on the environment, improve its reputation and increase competitiveness.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100158"},"PeriodicalIF":0.0,"publicationDate":"2025-02-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563350","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Reimagining research for renewable energy resources solutions: Integrating Intergovernmental Panel on Climate Change assessments for effective global action","authors":"Riadh Abdul Retha Abass ,&nbsp;Hassan Falah Fakhruldeen ,&nbsp;Omer Al-Dulaimi ,&nbsp;Bashar Mahmood Ali ,&nbsp;Azizbek Khurramov ,&nbsp;Feryal Ibrahim Jabbar ,&nbsp;Maha Barakat ,&nbsp;Sameer Algburi","doi":"10.1016/j.uncres.2025.100165","DOIUrl":"10.1016/j.uncres.2025.100165","url":null,"abstract":"<div><div>The study explores the critical need for adapting research structures to bolster sustainable action and addresses the incorporation of intergovernmental agencies on sustainability findings within a mission-driven approach. Sustainable change is an urgent global challenge requiring swift and comprehensive action. Traditional research structures often struggle to effectively address the complex and interconnected nature of sustainably issues hindering progress. This study proposes a mission-driven framework that aligns research efforts with an overarching goal of combating sustainable change. Integrating Intergovernmental Panel on Climate Change (IPCC) findings, known for scientific rigor and consensus-based assessments, this approach ensures the incorporation of the latest and most reliable sustainability data. The study highlights the potential benefits of this approach, including enhanced policy development, informed decision-making, and greater public engagement. Emphasizing the significance of collaborative efforts among scientists, policymakers, and stakeholders, the mission-driven approach encourages a holistic understanding of sustainability challenges and fosters effective solutions for a more sustainable future.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100165"},"PeriodicalIF":0.0,"publicationDate":"2025-02-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143563349","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"echno-economic and environmental evaluation of green hydrogen co-firing in a 570 MWe gas turbine combined cycle power plant in Iraq","authors":"Hassan Munther ,&nbsp;Qusay Hassan ,&nbsp;Aymen Mohammed ,&nbsp;Talib Munshid Hanoon ,&nbsp;Sameer Algburi","doi":"10.1016/j.uncres.2025.100163","DOIUrl":"10.1016/j.uncres.2025.100163","url":null,"abstract":"<div><div>The study evaluates the interconnections between renewable energy generation, hydrogen production, storage, and the operational demands of hydrogen co-fired gas turbine combined cycle (GTCC) power plants for carbon-neutral energy production. Specifically, it assesses the technical, economic, and environmental aspects of producing green hydrogen from hybrid photovoltaic (PV) and wind turbine (WT) sources in Dhi Qar, Iraq. The analysis considers three scenarios with varying hydrogen mole fractions (15 %, 30 %, and 50 %) co-fired with natural gas in a 570 MWe of the GTCC power plant, emitting 1.39 million tonnes of CO₂ annually. Baseline renewable electricity generation capacities for solar PV and wind energy were set at 497.5, 970, and 2200.5 MWp, with hybrid PV/WT systems optimized to supply power to an alkaline water electrolyzer (AWE) with capacities of 180, 425, and 825 MWp, based on hourly weather data from 2023. Multi-objective simulations and optimizations were performed using HOMER Pro and ProSim software to minimize the net present cost (NPC), levelized cost of energy (LCOE), cost of hydrogen (COH), and CO₂ emissions. Over the proposed 20-year project lifespan (2023–2043), green hydrogen production ranged from 12,082 to 54,442.9 tonnes annually, with a COH between $3.29 and $3.16 per kilogram, demonstrating the economic viability of large-scale hydrogen production. Hydrogen consumption in the GTCC fuel mixture ranged from 10,554.1 to 47,431 tonnes annually, reducing CO₂ emissions by 67,864.3 to 310,831.4 tonnes annually. Additionally, natural gas use decreased by 5.22 %–29.1 %, yielding savings of $6.79 to $31.08 million from avoided CO₂ emissions costs. However, despite the environmental and fuel cost benefits, the NPC for the green hydrogen project ranged from $412.9 million to $1.785 billion, and the LCOE for hydrogen co-combustion in the GTCC power plant ranged from $113.54 to $127.74 per MWh, compared to $107.93 per MWh for 100 % natural gas-based power generation.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100163"},"PeriodicalIF":0.0,"publicationDate":"2025-02-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143489041","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Lithologic characteristics and reservoir evolution of tight sandstones in the upper Triassic Xujiahe formation, northeast Sichuan Basin, China","authors":"Jianbo Gao ,&nbsp;Ningliang Sun ,&nbsp;Bing Hao ,&nbsp;Jianhua Zhong ,&nbsp;Zhiwei Chen ,&nbsp;Zhifeng Cao","doi":"10.1016/j.uncres.2025.100162","DOIUrl":"10.1016/j.uncres.2025.100162","url":null,"abstract":"<div><div>The Xujiahe Formation sandstones in the northeast Sichuan Basin are an important tight gas reservoir. Mineralogical, petrographic, and geochemical data were used to constrain the diagenesis and evolution of the reservoir quality. The Xujiahe sandstones are mainly classified as litharenite and feldspathic litharenite (lithofacies 1) and sublitharenite and quartz arenite (lithofacies 2). The clay mineral is dominated by illite and mixed-layer illite/smectite. The reservoir quality is poor, with a porosity of 0.1–5.6 % (average of 1.7 %) and permeability between 0.006–2.83 × 10⁻³ μm² (average of 0.05 × 10⁻³ μm²). Sandstones develop a nanopore network with a strong heterogeneous pore structure and poor throat sorting. Intercrystalline micropores and microfractures are favorable pore types. The sandstones underwent significant diagenetic alterations and were dominated by mechanical compaction, volcanic ash alteration, authigenic clay minerals transformation, quartz and carbonate cementation, feldspar and rock fragment dissolution, and pressure dissolution. The diagenetic evolution enters the Telodiagenesis stage. The homogenization temperature (T_h) of fluid inclusions within the calcite cement of lithofacies 1 is 102.7–198.2 °C, whereas it is 159.3–205.6 °C for lithofacies 2, indicating that lithofacies 1 experienced additional stages of carbonate cementation. The T_h within quartz cement has high values. Lithofacies 1 is 102.4–209.7 °C, whereas lithofacies 2 is between 145.7 and 207.7 °C, indicating that pressure dissolution significantly decreased pore spaces in the late diagenetic stage. Depositional and diagenetic factors controlled reservoir quality. Good grain sorting and relatively big grain size are available for primary pore protection, whereas cementation evidently destroyed reservoir quality. Reservoir and porosity evolution processes indicate that lithofacies 2 has relatively good porosity. This study successfully improves the exploration and development efficiency of Xujiahe tight sandstone gas and can be applied to similar gas fields worldwide.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100162"},"PeriodicalIF":0.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143465432","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Climate change impacts on sustainable agriculture: Evidence from Armenia","authors":"Meri Manucharyan","doi":"10.1016/j.uncres.2025.100159","DOIUrl":"10.1016/j.uncres.2025.100159","url":null,"abstract":"<div><div>This article explores climate change and its possible impact on the agrarian sector of Armenia through correlation analysis. As a country heavily reliant on agriculture for economic stability and food security, Armenia faces significant challenges due to shifting climatic patterns. By analyzing historical climate data and agricultural productivity metrics from the past decades, the study identifies correlations between rising temperatures, altered precipitation patterns, and gross product metrics. Additionally, the research explores how the dynamics of these climatic factors changed through time and what implications those changes possess for the future. Findings reveal that animal husbandry is particularly vulnerable to climate variability, highlighting the need for adaptive strategies to mitigate risks. The article concludes with the idea that <em>scientific research related to climate change should be aimed at the development of adaptation and prevention policies in the future.</em></div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100159"},"PeriodicalIF":0.0,"publicationDate":"2025-02-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143611264","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Energy transition as a path to sustainable development in Latin American countries","authors":"Diana Pamela Chavarry Galvez,&nbsp;Svetlana Y. Revinova","doi":"10.1016/j.uncres.2025.100157","DOIUrl":"10.1016/j.uncres.2025.100157","url":null,"abstract":"<div><div>This article examines key aspects of the energy transition as a pathway towards sustainable development in the Latin American region. The main directions of energy transition are highlighted, the role of alternative energy as a crucial driver is explored, and an analysis of progress towards energy transition goals in Latin America is presented. The study identifies challenges hindering the energy transition, including climate change, financial constraints, technological limitations, socio-economic disparities, and organizational barriers. To address these issues, the following measures are proposed: improving the institutional framework; strengthening policies to attract investment, particularly foreign direct investment in projects developing alternative energy sources, including within regional integration unions (MERCOSUR, the Andean Community, the Pacific Alliance, CELAC, etc.); addressing natural and climatic challenges through the construction of energy storage facilities; increasing the role of national banks in addressing investment gaps in renewable energy projects; and enhancing international cooperation in developing renewable energy sources, both at regional and global levels.</div></div>","PeriodicalId":101263,"journal":{"name":"Unconventional Resources","volume":"6 ","pages":"Article 100157"},"PeriodicalIF":0.0,"publicationDate":"2025-02-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143436853","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}