A graphene plugging material for high-temperature and high-salt water-based drilling fluids
April 2026
During the drilling process in deep oil reservoirs with high temperature and high salinity, the drilling fluid faces the risk of performance failure. Experiments have shown that the high-temperature...
Petroleum system modeling in the central part of the Fars platform (Zagros Basin)
April 2026
The Fars Platform is a geological region with significant untapped potential for petroleum resources. Its unique structural and stratigraphic features, combined with favorable reservoir conditions,...
A probabilistic comprehensive evaluation method for the fracability of unconventional hydrocarbons reservoir considering description uncertainty of target formation
April 2026
Fracability evaluation is a crucial basis for fracturing and production enhancement in tight reservoirs. Due to the complexity of the geological environment, factors influencing reservoir fracability...
Analysis of the effect of steam injection conditions on the integrity of casing-cement sheath-formation assemblies in heavy oil thermal recovery
April 2026
Accurately forecasting the sealing failure behavior of the casing-cement sheath-formation assembly under various steam injection operational parameters and cyclic steam stimulation conditions remains...
Structural evolution and reservoir-control mechanisms of ultra-deep strike–slip fault zones in the Fuman area, Tarim Basin, China
April 2026
The discovery of ultra-deep strike–slip fault–controlled hydrocarbon reservoirs in the central Tarim Basin has renewed interest in the structural evolution and reservoir-controlling mechanisms of intracratonic...
Molecular Simulation of H2, CO2 and CH4 Adsorption on Kerogen in Moisture-Rich Environments
Available online 28 April 2026
Understanding gas adsorption in organic-rich shales is critical for evaluating their role in CO2 sequestration and underground hydrogen storage. In this study, grand canonical Monte Carlo (GCMC) simulations...
Fracture cross-layer propagation patterns and stimulation effectiveness evaluation in thin interbedded reservoir models
Available online 27 April 2026
Offshore thin interbedded reservoirs are characterized by frequent alternation of sandstone and mudstone, strong vertical heterogeneity, and complex fracture cross-layer propagation mechanisms, which...
Study on the dynamic mechanism of wellbore instability in deep fractured formations
Available online 27 April 2026
Due to the presence of highly discrete rock blocks and extensively developed natural fractures in fractured formations, frequent losses of drilling fluid and wellbore instability incidents occur during...
An improved hybrid screening framework for reservoir selection in CO2-Enhanced oil recovery
Available online 25 April 2026
The oil and gas industry increasingly employs advanced engineering solutions to optimize enhanced oil recovery (EOR). A systematic and effective screening process, supported by multi-criteria decision-making...
CO2 enhanced shale oil and carbon sequestration in kerogen nanopores: A molecular dynamics study
Available online 22 April 2026
Carbon dioxide (CO2) injection is a promising strategy for enhancing shale oil recovery while enabling geological carbon storage. In this study, non-equilibrium molecular dynamics (NEMD) simulations...
Discrete element method for investigating the borehole wall rock failure process based on the enhancement effect of microbial drilling fluids
Available online 22 April 2026
Borehole wall instability in unconsolidated formations is a critical challenge in drilling engineering and requires urgent attention. Microbially induced calcium carbonate precipitation (MICP) is a...
Research on the influencing factors and prediction model of sulfur particle aggregation diameter in high-sulfur gas wells
Available online 22 April 2026
The size of sulfur particle aggregates directly influences the critical sulfur particle carrying velocity, flow resistance, sulfur blockage thickness, corrosion rate, and scaling rate in high-sulfur...
Permeability prediction of tight sandstone reservoirs under few-shot and imbalanced conditions: A generative data enhancement and bi-directional attention fusion framework
Available online 22 April 2026
Permeability prediction in tight sandstone reservoirs is strongly influenced by diagenesis, multiscale pore structures and multiphase flow effects, resulting in pronounced spatial heterogeneity. Traditional...
Development status of integrated CO2 fracturing-enhanced recovery-storage technology
Available online 20 April 2026
Driven by the dual objectives of the global energy industry—substantially enhancing hydrocarbon recovery and achieving long-term CO2 geological sequestration—this paper systematically reviews the development...
Relative permeability and capillary pressure estimation via physics-informed machine learning and reinforcement learning
Available online 16 April 2026
Accurately predicting multiphase fluid flow in oil and gas reservoirs is crucial to optimizing production and minimizing costs. However, traditional numerical reservoir simulations are computationally...
Enhancing the properties of heavy crude oil in the Maysan field using low molecular weight solvents in a high-speed extraction unit equipped with top baffles
Available online 16 April 2026
Heavy crude oils present major challenges in transportation and front-end processing due to their extremely high viscosity and low API gravity. This work introduces an integrated experimental–statistical–mechanistic...
A clustering-guided feature enhancement and Bayesian-optimized LSTM approach for LC temporal anomaly detection
Available online 14 April 2026
Lost circulation (LC), as one of the high-risk accidents in drilling, usually occurs when the wellbore pressure is greater than the formation pressure, causing a large amount of drilling fluid to seep...
A review on functional group chemistry and structure-to-function design for mechanism-centric nanoparticle EOR
Available online 7 April 2026
A significant challenge in advancing nanoparticle-based enhanced oil recovery (EOR) is the gap between synthesis and application. Many reviews catalog surface modification techniques but fail to explain...
Interfacial tension modeling in CO2-brine systems using machine learning for enhanced CO2 storage
Available online 18 March 2026
This study introduces an advanced machine learning (ML) framework to predict interfacial tension (IFT) in CO2-brine systems, a key factor in optimizing carbon capture and storage (CCS) processes. Accurate...
CO2 Impact on Water-based Drilling Fluids: Excessive Thickening Characteristics and Mechanisms
Available online 13 March 2026
Persistent CO2 intrusion during drilling operations in deep carbonate formations frequently leads to excessive thickening of water-based drilling fluids, resulting in significantly increased pump pressure...
CO2 WAG and SAG machine learning data-driven models in an open-source framework – A theoretical study
Available online 6 March 2026
Optimizing CO2 enhanced oil recovery (CO2 EOR) requires numerous reservoir simulations, creating a computational burden that can be addressed using data driven models (DDMs). However, machine learning...
CCUS wellbore integrity risk assessment and management based on game theory combination weighting-DHHFLOWLAD
February 2026
In response to the increasing risk of well integrity failure during carbon dioxide capture, utilization and storage (CCUS), a multi-index evaluation and recommendation model based on the game theory...
Research on the influence of silica fume on the long-term strength development of lightweight cement
February 2026
Silica fume (SF) is commonly added to lightweight cement slurry (LWCS) to enhance strength and stability due to its nanoscale properties. However, the long-term strength development of SF-modified cement...
Enhanced oil recovery in tight conglomerate reservoirs using CO2 flooding: A visual model with fractal-based zoning
February 2026
CO2 flooding has emerged as a valuable method for enhancing oil recovery (EOR) in fossil fuel reservoirs. However, the impact of micro-heterogeneity, particularly variations in pore sizes, on CO2 flooding...
Hydrocarbon generation potential evaluation of high–over mature Permian source rocks in the Southwestern part of the central depression, Junggar Basin
February 2026
A comprehensive study was conducted on the hydrocarbon generation potential of the deeply buried Permian source rocks with high–over mature in the southwestern part of the Central Depression, Junggar...
