The Africa-Atlantic Gas Pipeline (AAGP), also known as the Nigeria-Morocco Gas Pipeline, is a major transcontinental infrastructure project poised to connect West African gas reserves with North African networks and European markets, potentially reshaping regional energy dynamics, boosting economic development, and enhancing energy security. Its strategic importance has grown amid Europe’s urgent need to diversify away from Russian gas imports and Africa’s dual challenge of resource-based development and sustainable local energy access. Despite increasing interest, there is a lack of integrated, quantitative evaluation of competing gas transit strategies considering technical, economic,... More >

The deep shale gas ($\geq 3500$ m) in the Z205 well area is a critical exploration and development target in the Sichuan Basin. The shale gas reservoirs of the Upper Ordovician Wufeng Formation -- Lower Silurian Longmaxi Formation (Long 1$_1$ submember) in this area are characterized by deep burial and significant vertical and lateral heterogeneity. The Long 1$_1$ submember is subdivided into the Wufeng Formation, Long 1$_1^1$, Long 1$_1^2$, Long 1$_1^3$, and Long 1$_1^4$. This study conducts a detailed stratigraphic comparison based on integrated logging, core analysis, and analytical test data from the well area, clarifying the longitudinal and lateral distribution patterns of the reservoi... More >

The widespread adoption of Battery Energy Storage Systems (BESS) is crucial for integrating intermittent renewable sources like solar and wind into the power grid, thereby advancing the goals of green energy. Deploying BESS underground offers a sustainable solution to land constraints and safety concerns. However, the dynamic and complex thermal environment underground severely challenges the accurate State-of-Charge (SOC) estimation, which is vital for the safety, longevity, and operational efficiency of BESS. Data-driven SOC models often suffer from performance degradation due to data distribution shifts caused by temperature fluctuations, especially when operational data for specific unde... More >

Danxia landform, recognized for its steep cliffs and red coloration, has drawn significant scientific attention. While Chinese Danxia Landforms are UNESCO World Heritage Sites, their genesis and evolution, particularly in less-explored regions, remain under study. The southern Sichuan Basin, one of China's three largest Danxia outcrop areas, offers a unique case study due to its distinct geological setting and limited research. This study investigates the genesis of Danxia landforms in the southern Sichuan Basin using a multi-faceted approach. Field observations documented geomorphological characteristics and stratigraphy of the Danxia formations. Tectonic analysis, using regional structural... More >

This study aimed to quantify the comprehensive environmental footprint of primary iridium production, a critical yet exceptionally scarce metal, to inform more sustainable practices in its supply chain. The research method employed a cradle-to-gate Life Cycle Assessment (LCA) using the Brightway2 framework, establishing a detailed inventory model for iridium production. The environmental impacts for the functional unit of 1 kg of refined iridium were evaluated using multiple impact assessment methods. Furthermore, sensitivity analysis and Monte Carlo simulations were conducted to assess parameter uncertainties. The results conclude that iridium production imposes a substantial environmental... More >

In shale reservoirs, fracturing fluid can be easily absorbed into the pore space due to the strong capillary force of shale. These invading fluids can impact the rock mechanical properties and creep behavior characteristics of shale under water-rock interaction. This paper discussed the influence of water-rock interaction on the mechanical parameters and creep behavior of shale rocks based on shale hydration swelling experiments, acoustic-triaxial compression tests, and shale creep experiments. The experiments show that: There are two stages of shale hydration swelling: rapid swelling stage and stable swelling stage. Temperature mainly impacts the hydration swelling rate, while the type of l... More >

To address two critical gaps in vegetation carbon sink (VCS) research---its limited policy relevance at the county scale and the insufficient identification of nonlinear interactive effects within driving mechanisms---this study focuses on the Chengdu-Chongqing Economic Circle (CCEC). Using MODIS NPP data (2002--2022), we examined the spatiotemporal dynamics of VCS through time-series analysis, standard deviational ellipse, and spatial autocorrelation analysis. Crucially, we applied the Geodetector model to quantitatively disentangle the roles of natural and anthropogenic drivers. The results show that: (1) VCS followed a fluctuating upward trajectory, peaking in 2019, but declined sharply i... More >

Deep shale sedimentary environment, diagenesis, and pore evolution are closely related to the occurrence state and content of shale gas, exerting significant control on reservoir quality. In this study, scanning electron microscopy (SEM), mineral composition, spectral gamma-ray logging, elemental logging, and comprehensive well log data were used to analyze the sedimentary environment. Combined with pore structure and storage space experiments, the geological conditions for deep shale gas accumulation were discussed. The Longmaxi Formation high-quality shale reservoirs in southern Sichuan (Luzhou area) are laterally extensive, vertically thick, and contain well-developed natural fractures; t... More >

Based on in-depth investigation and analysis of the current situation of CCUS development in China, this paper combs and summarizes the technical status and development trends of the carbon capture, transportation, utilization and storage industry (CCUS) at home and abroad in recent years through comprehensive research, and conducts in-depth discussions on the existing technical problems and risks. The analysis shows that in the short term, China's CCUS will still be dominated by CO2-EOR (Enhanced Oil Recovery) utilization. CO2 mineralization utilization and chemical utilization will gain new development space with technological breakthroughs. Pure carbon dioxide storage is restricted by pol... More >

The shale gas content of the Longmaxi Formation exhibits significant spatial variation in different structural parts of the Sangzhi area in Hubei Province, reflecting differences in preservation conditions. To quantitatively evaluate these conditions, this study integrates analyses of structural features, fault distribution, formation water chemistry, and shale gas composition from four wells. Results show that preservation is primarily controlled by the F1 and F3 faults. Wells distant from these faults (SY3 and SY5) display weak connectivity with surface water, feature CaCl2-type formation water with high salinity and diagnostic ion coefficients, and contain hydrocarbon gases derived from o... More >

Against the backdrop of a profound global energy transition and escalating ecological and environmental risks, the Journal of Geo-Energy and Environment (JGEE) is launched to build a high-level scholarly platform at the intersection of 'Geo-Energy–Environment–Ecology'. JGEE focuses on conventional fossil energy, geothermal energy, and natural gas hydrates, as well as new energy sources such as hydropower, photovoltaics, and hydrogen, and advocates a closed-loop and cross-scale integration of theory–technology–numerical simulation–experiment. It concentrates on energy–environment coupling and resource management, including Carbon capture, utilization, and storage (CCUS), methane m... More >