InpAS: A sedimentary knowledge-inspired deep learning model for inpainting arbitrary strips in formation micro-imager logs
Available online 20 October 2026
Formation Micro-Imager (FMI) data are critical for hydrocarbon exploration. However, variations in borehole size frequently cause gaps in FMI images, which hinder well-log interpretation. This study...
Coupled genesis and efficient abandoned-well development of Permian high-salinity geothermal system in the central Sichuan Paleo-uplift
Available online 20 October 2026
This study addresses the need for cost-effective and efficient methods to exploit Permian high-salinity geothermal water in the Sichuan Basin, where technologies for ultra-deep carbonate geothermal...
Temperature-mediated response behavior of resin-coated proppant transport and curing in hydraulic fracturing
Available online 20 October 2026
Hydraulic fracturing is a key technology for developing unconventional resources. However, as operations penetrate deeper, elevated temperature and field factors such as nonuniform thermal fields, fracture...
Physics–data synergistic optimization method for hydraulic fracture parameters in horizontal wells
Available online 20 October 2026
The rational design of hydraulic fracture parameters is crucial for the efficient development of shale gas development. However, conventional optimization approaches are often computationally expensive,...
An autocorrelation localization method based on a multi-scale physically constrained wavelet transform for tubing leakage
Available online 20 October 2026
Tubing leakage in gas wells poses a critical risk to wellbore integrity and production safety. Localizing these leaks using wellhead acoustic signals, without requiring a shutdown, offers a promising...
An intelligent formulation generation framework for lost circulation materials based on attribute embedding
Available online 20 October 2026
Lost circulation is a frequent and severe problem in drilling operations. To mitigate fluid loss, lost circulation material (LCM) formulations are widely used. However, designing these formulations...
The impact of impurity gases on the evolution and stability of CO2 flooding fronts: Insights from thermodynamics, mass transfer and dynamic mechanisms
Available online 20 October 2026
In field applications, the limited availability of pure CO2 for CO2-based enhanced oil recovery (EOR) and carbon capture, utilization, and storage (CCUS) often necessitates injecting gas streams containing...
A novel NMR echo-based fractal method for evaluating hydrocarbon mobility in shale reservoirs
Available online 20 October 2026
Shale oil and gas constitute important components of the global unconventional energy resources and have consequently received increasing attention. However, accurately quantifying hydrocarbon mobility...
Key process characteristics of supercritical hydrothermal combustion-driven underground coal gasification: Ignition, ash fusion, and energy conversion
Available online 19 October 2026
Supercritical hydrothermal combustion (SCHC) offers a potential solution to challenges associated with underground coal gasification (UCG) and serves as a pathway for exploiting abundant deep coal resources....
Numerical analysis of hydraulic fracture initiation and propagation in elastoplastic hydrate-bearing sediments
August 2026
Hydrate-bearing sediments (HBS) exhibit pronounced plastic deformation, complicating both hydraulic fracture initiation and propagation. Conventional models typically assume purely elastic behavior...
Spatiotemporal evolution of lower-middle Triassic strata, Sichuan Basin, Southwestern China: Insights into the deformation mechanism of the Luzhou paleo-uplift and gas exploration
August 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...
Optimization of acid fracturing process in naturally fractured tight sandstone reservoirs
August 2026
Naturally fractured tight sandstone reservoirs in the Keshen Gas Field of the Tarim Basin are featured by low porosity and low permeability. Widespread calcite filling within natural fractures limits...
Recent advances in multi-physics coupled simulation of matrix acidizing and acid fracturing: New insights from CT-based digital rock physics
August 2026
Matrix acidizing and acid fracturing are crucial technologies for enhancing production in carbonate reservoirs. However, accurately predicting acidizing performance remains challenging due to strong...
Accurate quantification of multiple sulfur compounds in natural gas: Preparation and evaluation of a thioether-functionalized covalent organic framework-based gas chromatography capillary column
August 2026
Accurate quantification of sulfur compounds, such as hydrogen sulfide and mercaptans, is crucial for natural gas quality control and ensuring the safe supply of energy sources, given their high reactivity...
Predicting total organic carbon in Wufeng–Longmaxi shales by coupling machine learning with multiple intelligent optimization algorithms: A case study from structurally complex Northern Guizhou
August 2026
Total organic carbon (TOC) plays a crucial role in unconventional oil and gas exploration. The traditional ΔlogR method faces limitations under complex geological conditions, while conventional machine-learning...
Research advances in nonlinear flow mechanisms and productivity prediction for horizontal wells in ultra-low-permeability gas reservoirs
August 2026
Natural gas plays a prominent role in China's transition toward a low-carbon energy system. Ultra-low-permeability gas reservoirs hold substantial natural gas reserves, but their efficient development...
Development geology of unconventional natural gas: Enrichment mechanisms, sweet spot evaluation, and development response
August 2026
Unconventional natural gas has become an important contributor to the growth of global natural gas reserves and production expansion. However, pronounced heterogeneity among different reservoir types...
Integrated bio-stimulation framework for microbially enhanced coalbed methane recovery in dual-porosity reservoirs
August 2026
Predicting microbially enhanced coalbed methane (MECBM) extraction accurately presents a significant challenge, largely because current models fail to adequately integrate microbial kinetics with the...
Digital twin-driven nonplanar fracture reconstruction and evaluation in tight reservoirs
June 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...
Effect of increased propensity for non-aqueous carbon dioxide formation on wormholing in carbonate acidizing: An acid flooding study
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
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
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...
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
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
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....
Review of the analysis and methods of natural gas pipeline network operation optimization
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...
