Molecular simulation of CH4/CO2/N2 ternary mixture competitive adsorption and diffusion dynamics in tight sandstone
Available online 15 February 2026
Injecting impure CO2 for enhanced gas recovery (CO2-EGR) offers a dual benefit by improving natural gas extraction while enabling CO2 sequestration. However, the interactions between CO2, N2, and CH4...
Quantitative evaluation of coal fracability based on 3D CT reconstruction and fractal characteristics
Available online 14 February 2026
Fracability is a critical indicator for evaluating the exploration and development potential of coalbed methane reservoirs and assessing the effectiveness of hydraulic fracturing stimulation operations....
Nonlinear fluid flow regimes in fractured shale: Impact of confining stresses and water-supercritical CO2 interactions
Available online 13 February 2026
The coupled chemo-mechanical impact of supercritical CO2–H2O (ScCO2–H2O) reactions on fracture geometry and nonlinear flow regimes in deep shale under confining pressures remains inadequately quantified....
Vertical gas dispersion from high-pressure pipeline failures: Characterizing hazardous cloud formation in open environments
Available online 13 February 2026
This paper examines how natural gas disperses vertically when high-pressure pipelines with large openings fail in unconfined environments, providing insight into hazardous gas cloud development and...
Rock-breaking experiments and simulations of shaped cutters in hard rock formations
Available online 13 February 2026
To address the challenges of rapid bit failure and high drilling costs associated with hard limestone in Sichuan Basin of China, we conducted rock-breaking experiments and simulations of shaped (cylindrical,...
Deflagration fracturing modification of nanoporous structure in the shale reservoirs of the Longmaxi Formation, Southern Sichuan, China
Available online 9 February 2026
Methane in-situ deflagration fracturing in shale is a revolutionary anhydrous technology. This paper selects shale samples from the Longmaxi Formation in Southern Sichuan to conduct deflagration fracturing...
Control of ash yield on vertical pore structure development and its impact on coalbed methane adsorption in the deep coal seams of the Ordos Basin
Available online 9 February 2026
The vertical heterogeneity of the pore structure in deep coal seams with varying ash yields is a key control for coalbed methane storage and producibility; however, its specific impact on gas adsorption...
Development and performance of CO2-responsive foam fracturing fluid
December 2025
CO2 foam fracturing fluid can effectively integrate CCUS technology into oil and gas field development, and its core advantages include low water consumption, excellent flowback performance, and strong...
Limit analysis of extended-reach drilling considering the coupling effects of hydraulic energy loss and transient cuttings transport
December 2025
Ultradeep extended-reach drilling has become the most effective engineering method for economically developing marginal reservoirs in the eastern South China Sea. However, complications, including poor...
The process and trends of China's energy transition and the strategic repositioning of natural gas
December 2025
China's pursuit of its dual carbon goal has turned the country's energy transition and the role of natural gas into key concerns for policymakers and researchers. This study adopts a macro-level analytical...
Wellbore stability analysis considering rock damage mechanics theory: An integrated experimental and numerical study
December 2025
Conventional geostress evaluation methods often assume static rock properties and neglect the dynamic degradation of mechanical parameters caused by damage evolution during drilling and fracturing processes,...
Experimental study on hydraulic fracture propagation in middle-deep shale gas reservoirs in the southern Sichuan Basin: The effects of vertical heterogeneity
December 2025
During the hydraulic fracturing of shale gas in the southern Sichuan Basin, China, field monitoring data have shown that hydraulic fracture (HF) propagation is restricted by height and cannot sufficiently...
Research progress on numerical simulation methods and models for underground coal gasification
December 2025
Coal underground gasification (UCG) transforms the physical extraction of coal into the chemical extraction of gas, which is effective for exploiting deep coal deposits. Numerical simulation technology...
Multifractal characteristics of nanopores in the Zhaotong national shale gas demonstration area, Southern Sichuan Basin, China
December 2025
The multifractal characteristics of organic-rich shale developed along the margins of basins are essential for understanding reservoir heterogeneity, gas storage mechanisms, and the identification of...
Enhancing offshore oil and gas platform sustainability through wind-powered hydrogen production
December 2025
Decarbonizing offshore oil and gas platforms has become a critical challenge in the energy transition. In this article, we propose the following two models for decarbonizing offshore oil and gas platforms...
Intramolecular carbon isotopic fractionation of propane via thermochemical sulfate reduction (TSR) in natural gas reservoirs
Available online 22 December 2025
Thermochemical sulfate reduction (TSR) is an important organic–inorganic reaction that occurs within sedimentary basins and alters the original chemical compositions and isotopic structures of hydrocarbons...
Paleo-environmental and geological characteristics of Wufeng-Longmaxi marine shale in different paleo-geomorphological units, Eastern Sichuan Basin, China
October 2025
The Wufeng-Longmaxi marine shale in the Eastern Sichuan Basin is the key target for shale gas exploration in China. Based on logging response and lithofacies type, three paleo-geomorphological units...
Genetic sources of natural gas in new exploration strata in the piedmont area of southwestern Tarim Basin
October 2025
Despite its significant exploration potential, the origin of natural gas in the tectonically complex southwestern Tarim Basin remains controversial due to multiple potential source rocks. This study...
Seismic sedimentological-based quantifications of late-Cretaceous hydrocarbon-bearing late-aggradational lowstands prograding wedges in the Indus basin: Frequency-controlled porosity-constrained dynamic simulations
October 2025
Seismic quantitative reservoir simulations and characterizations have played a vital role in exploring stratigraphic traps, such as late-aggradational lowstands prograding wedge systems (LPWS) within...
Risk assessment and prevention measures for casing deformation in the geological–engineering integration of a block in Jiaoshiba shale gas field
October 2025
Casing deformation is a widespread problem in a certain block of Jiaoshiba Shale Gas Field in Sichuan Basin, China, and it severely limits the development benefits of shale gas in that block. Based...
Coal permeability evolution under coupled mining disturbance and gas extraction conditions: An experimental study
October 2025
This study investigates the evolution of coal permeability under mining-induced stress and gas extraction, a key factor for safe and efficient coal seam gas recovery. A simplified triaxial stress path...
Gas compositional and isotopic variation during desorption of middle-upper Permian shales in western Hubei, Southern China
October 2025
Significant progress has been made in exploring shale gas resources in the middle-upper Permian strata of western Hubei. However, the unclear geochemical characteristics and origins of the gas have...
Diagenetic facies, volcanic tuffaceous sediment, and its diagenetic features in deeply buried tight sandstone, Shan 2 and He 1 Members, Ordos Basin, China
October 2025
Understanding diagenetic processes plays a crucial role in evaluating the quality of tight reservoirs. In this study, we aimed to examine diagenetic facies and thereby assess reservoir quality by conducting...
Global liquefied natural gas market development and future outlook
October 2025
Since 2020, the global energy market has faced persistent disruptions due to geological tensions and the economic competition among great nations, with liquefied natural gas (LNG) emerging as a vital...
Numerical assessment of gas production potential via depressurization: Impact of production interval and bottom hole pressure at site NGHP-01-10D of the Krishna-Godavari Basin hydrate reservoir
August 2025
The National Gas Hydrate Program expeditions (NGHP-01 and -02) have conclusively proven the presence of hydrate deposits on the eastern coast of India. The novelty of the present study lies in its investigation...