Automated labeling and segmentation based on segment anything model: Quantitative analysis of bubbles in gas–liquid flow
December 2025
The quantitative analysis of dispersed phases (bubbles, droplets, and particles) in multiphase flow systems represents a persistent technological challenge in petroleum engineering applications, including...
Study on flow capacity and percolation behavior of hydraulically induced bedding fracture by different fluids in full-diameter shale cores
December 2025
Chinaʼs continental shale exhibits favorable geological characteristics and substantial resource potential, yet oil recovery for natural energy extraction remains critically low. Investigating the mechanisms...
A new approach to remediation of crude oil with promising green composites: Biosurfactant-producing Bacillus sp. consortium entrapped in chitosan, chitosan/glutaraldehyde and chitosan/Na-bentonite
December 2025
This study compares the crude oil removal efficiency of free and biosurfactant-producing bacterial consortia (Bacillus tequilensis NR_104919 and Bacillus axarquiensis NR_115929) entrapped in chitosan...
Research progress and scientific challenges in permeability evolution of hydrate bearing sediments
December 2025
Natural gas hydrate production involves complex mass/heat transfer, phase transformation, and multiphase seepage processes, where permeability critically influences exploitation efficiency and sediment...
ThinGPT: describing sedimentary rock thin section images with a multimodal large language model
December 2025
Rock thin section description is an essential method for examining lithology, structure, diagenesis, and sedimentary environment, playing a pivotal role in fields such as geology, geophysics, and petroleum...
Real-time NMR experimental study of displacement–imbibition coupling in tight/shale oil reservoirs: Lithological variations, influencing factors, and key insights
December 2025
Displacement–imbibition coupling production is a pivotal technology for enhancing oil recovery (EOR) in waterflooded tight/shale oil reservoirs. However, the microscopic fluid transport mechanisms across...
Multifactor controls on imbibition oil recovery in shale: Insights from low-field nuclear magnetic resonance
December 2025
Shale is characterized by a complex mineral composition and a well-developed, multiscale pore network spanning from micropores to nanopores, which gives rise to a highly intricate microscopic imbibition...
Grain boundary strength in methane hydrates
December 2025
Grain boundaries (GBs) in natural gas hydrates (NGHs) are ubiquitous crystal imperfection that undermine the stability of NGHs. In this study, we report the diverse cage structures and mechanical properties...
Swelling kinetics of polymer microspheres used for conformance control and their matching mechanisms with oil reservoir fractures
December 2025
Polymer microspheres are one type of particle gel with swelling property, and the particle size is distributed between nanometer and micron. Because of the good variability and migration characteristics,...
Molecular dynamics simulation of methane isotope fractionation in two-phase flow within inorganic pores
December 2025
Carbon isotope fractionation served as a key geochemical indicator for understanding shale gas storage and migration. However, the detailed mechanism of the fractionation behaviors of methane isotopes...
Enhanced oil recovery with a thermo-thickening viscoelastic surfactant: A comparison with polymer
December 2025
High-molecular-weight partially hydrolyzed polyacrylamide (HPAM) has extensively used in enhanced oil recovery (EOR) process; however, it suffers from poor injectivity into low-permeability oil reservoirs...
Mechanism-guided data-driven model for optimized completion design
December 2025
Effective completion design in hydraulic fracturing (HF) is crucial for optimizing production in unconventional reservoirs. Traditional geometric designs often fail to account for geological and engineering...
Shale oil occurrence state and its controlling factors in saline lacustrine basins: Insights from sequential solvent extraction
December 2025
Due to the complexity of the lithofacies associated with shale oil in saline lacustrine basins, the differences of shale oil occurrence state and its controlling factors in different lithofacies are...
Forecasting carbon price using a hybrid framework based on Bayesian optimization algorithm
December 2025
With the European Union (EU) introducing the Carbon Border Adjustment Mechanism (CBAM), accurately forecasting EU carbon price is crucial for exporters to estimate export costs, plan low-carbon strategies,...
Fast algorithm of borehole correction library construction for multi-component array induction tool in deviated boreholes
December 2025
The construction of a borehole correction library for the multi-component array induction tool in deviated boreholes involves extensive 3D forward modeling and typically requires significant computational...
Illitisation impeded the thermal evolution of extractable organic matter: An interpretation of the mineralogy and thermal maturation of early Cambrian source rocks in Yunnan Province, China
December 2025
The degree of thermal alteration of organic matter in sediments is crucial for comprehending the progress of oil and gas generation. The thermal maturity of kerogen, which is a component of the organic...
Insights into the charging behavior of tight oil under nanoscale confinement effects
Available online 31 December 2025
As conventional oil dwindles, tight oil gains importance for its vast potential. The physical property limit refers to the minimum pore size at which reservoir fluid can be charged under a defined accumulation...
Supramolecular polymer gels reinforced by cellulose nanofibers and laponite for lost circulation control of fractured oil and gas reservoirs
Available online 30 December 2025
Fractures in geological formations, which are commonly encountered during oil and gas exploration, pose significant challenges by facilitating fluid loss and reducing wellbore stability. Polymer gels...
Technical enhancement amine gas treating and cost reduction by assisting response surface methodology
Available online 25 December 2025
The process of amine sweetening of natural gas is crucial to purify it, meet environmental regulations, and boost its commercial value. This study proposes a novel hybrid optimization framework combining...
Analytical Model for Lateral Peak Soil Resistance based on Pipe-Soil Interaction Full-Scale Test and Numerical Simulation
Available online 25 December 2025
Pipelines, as critical infrastructure for oil and gas transportation, require precise evaluation of peak loads in displacement-prone zones to ensure operational safety. The current design guidelines...
Pore structure-controlled CO2 huff-n-puff efficiency in Jimusar shale oil reservoirs: Insights from classified oil reservoirs
Available online 24 December 2025
CO2 huff-n-puff is a promising enhanced oil recovery technique for shale oil reservoirs, but its efficiency in relation to pore structure across classified oil reservoirs remains unclear. This study...
Evolution mechanism of shale permeability considering competitive adsorption-induced swelling and slippage effect of binary CO2/CH4: Implications for CO2-ESGR
Available online 24 December 2025
During CO2-enhanced shale gas recovery (CO2-ESGR), the competitive adsorption and flow characteristics of binary CO2/CH4 in shale reservoirs significantly influence both CH4 production and CO2 storage....
Quantitative prediction of steam channeling based on steam override in horizontal wells cyclic steam stimulation:Mathematical modeling and experimental validation
Available online 24 December 2025
Cyclic steam stimulation (CSS) is a common method for heavy oil reservoir, but the current research on steam channeling in horizontal wells is limited. This study proposes a novel mathematical model...
A machine learning-driven interpretative framework for reconstructing hydrocarbon evolution in hybrid petroleum systems
Available online 22 December 2025
The genetic identification of hydrocarbons in complex hybrid petroleum systems remains challenging due to overlapping geochemical signatures caused by multi-source inputs and superimposed geological...
A new method for fluid saturation calculation in low resistivity oil reservoirs with nuclear magnetic resonance-constrained triple-water resistivity model
Available online 19 December 2025
To address the evaluation difficulty of hydrocarbon saturation in low resistivity reservoirs, an innovative method for calculating oil saturation is proposed using a nuclear magnetic resonance (NMR)-constrained...