A two-layer model–based coupled simulation study of multi-cluster hydraulic fracture propagation and proppant transport in shale
Available online 1 July 2026
Effective proppant placement in multi-cluster hydraulic fractures is crucial for shale gas fracturing; however, existing numerical methods face challenges in accurately coupling dynamic fracture propagation...
Simultaneous pre-stack prediction of lithology, geofluids, and physical properties in deep tight sandstone reservoirs based on recharacterization of reflection coefficient approximation equation and Bayesian inversion strategy
Available online 27 June 2026
Pre-stack seismic inversion is an important tool for the quantitative interpretation of complex reservoirs. However, the increasing demands of deep tight sandstone exploration require a more integrated...
Review of the analysis and methods of natural gas pipeline network operation optimization
Available online 26 June 2026
The expansion of natural gas consumption and pipeline construction makes integrating artificial intelligence into pipeline network operations increasingly essential. This review summarizes progress...
Machine learning identification of diagenetic facies in tight sandstones based on sandbody classification: The Fourth Member of the Triassic Xujiahe Formation, Jianyang area, Sichuan Basin
Available online 25 June 2026
Within tight sandstones, diagenetic features exhibit strong heterogeneity and intra-subfacies similarities, meaning that different rock units often share comparable mineral compositions and pore structures....
Diagenetic differences controlled by sediment composition and their implications for reservoir quality in the deep-buried Permian Urho Formation, Fukang Sag, Junggar basin
Available online 25 June 2026
Deeply buried coarse clastic reservoirs of the Permian Upper Urho Formation in the Fukang Sag, Junggar Basin, exhibit pronounced reservoir-quality heterogeneity in pore systems and lithofacies architecture....
Effect of increased propensity for non-aqueous carbon dioxide formation on wormholing in carbonate acidizing: An acid flooding study
Available online 23 June 2026
Acid–rock reactions in carbonate reservoirs generate CO2, whose phase behavior significantly influences wormhole propagation and, consequently, matrix acidizing efficiency. In this study, backpressure-controlled...
Thermo-hydro-mechanical coupled simulation of fracture propagation under cyclic loading in hot dry rock
Available online 23 June 2026
Cyclic-loading hydraulic fracturing generates alternating stresses and complex fracture networks in hot dry rock (HDR), but the predictive accuracy of existing models is limited by insufficient consideration...
Influence of CO2 or flue gas (СО2+N2) injection on the change in gas permeability of a subpermafrost hydrate-saturated reservoir: Results of experimental modeling
Available online 23 June 2026
Large volumes of natural gas stored in hydrate form within marine and subpermafrost environments represent a significant resource for potential extraction and use. Various methods for developing hydrate...
Spatiotemporal evolution of lower-middle Triassic strata, Sichuan Basin, Southwestern China: Insights into the deformation mechanism of the Luzhou paleo-uplift and gas exploration
Available online 13 June 2026
The Sichuan Basin experienced profound structural changes during the Triassic, generating debate regarding the deformation mechanism of the Luzhou paleo-uplift and complicating future gas exploration...
Numerical analysis of hydraulic fracture initiation and propagation in elastoplastic hydrate-bearing sediments
Available online 11 June 2026
Hydrate-bearing sediments (HBS) exhibit pronounced plastic deformation, complicating both hydraulic fracture initiation and propagation. Conventional models typically assume purely elastic behavior...
Digital twin-driven nonplanar fracture reconstruction and evaluation in tight reservoirs
Available online 22 May 2026
In tight oil reservoir development, hydraulic fracture morphology critically controls post-fracturing flow behavior. However, conventional microseismic monitoring remains limited in real-time characterization...
Modeling overpressure vertical transfer via faults in clastic sequences at the basin scale: Implications for overpressure generation and fluid flow
April 2026
The vertical transfer of overpressure significantly influences the subsurface fluid dynamics, fault zone stability, and geomechanical drilling safety. However, the mechanisms governing vertical overpressure...
Inhibition performance and mechanisms of methane hydrate inhibitors in oil and gas pipelines
April 2026
During winter natural gas transportation, hydrate formation under low-temperature and high-pressure conditions frequently results in pipeline blockage and severe low assurance challenges. Although conventional...
The synthesis and evaluation of two new gas hydrate kinetic inhibitors
April 2026
Gas hydrate plugging is a common yet hazardous problem during oil and gas reservoir exploitation, compelling the petroleum industry to invest substantial resources annually in mitigation strategies....
Sand-carrying thresholds of viscous slickwater: Weissenberg number–based prediction and field application
April 2026
The complex viscoelastic and shear-thinning behavior of slickwater fracturing fluids imposes competing effects on proppant transport, complicating the prediction of sand-carrying capacity and increasing...
Machine-learning models for classification of mudcake thickness in oil-based drilling fluids
April 2026
The performance of oil-based drilling fluids (OBDFs) is critical for maintaining drilling efficiency under conditions in which water-based fluids fail to perform effectively. Mudcake or filtercake thickness...
CO2 solubility and mineral trapping behavior in high-salinity reservoirs
April 2026
CO2 solubility and mineral trapping behavior are critical to the stability and effectiveness of integrating CO2 geological storage synergistically with gas field produced water (GPW) reinjection, a...
Experimental and numerical simulation of gas injection for enhanced oil recovery in naturally fractured condensate gas reservoirs
April 2026
Gas condensate reservoirs constitute important natural gas resources; however, their development is frequently hindered by condensate banking and complex multiphase flow behavior. Naturally fractured...
Intramolecular carbon isotopic fractionation of propane via thermochemical sulfate reduction (TSR) in natural gas reservoirs
February 2026
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...
Deflagration fracturing modification of nanoporous structure in the shale reservoirs of the Longmaxi Formation, Southern Sichuan, China
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
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...
Nonlinear fluid flow regimes in fractured shale: Impact of confining stresses and water-supercritical CO2 interactions
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
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
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,...
Quantitative evaluation of coal fracability based on 3D CT reconstruction and fractal characteristics
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....
