Digital twin driven ram BOP shear capability analysis
Available online 6 February 2026
As a critical component of the oil drilling control system, blowout preventers (BOPs) shear failure accidents can occur in case of blowout incidents. Existing methods based on simulation and empirical...
Techno-economic co-optimization of CO2 enhanced oil recovery strategies in a tight oil reservoir using coupled improved evolutionary algorithm and machine learning framework
Available online 6 February 2026
Massive carbon dioxide (CO2) emissions drive climate change. Injecting CO2 into unconventional reservoirs achieves both enhanced oil recovery (EOR) and geological sequestration. However, simultaneously...
Hydraulic-mechanical analysis of induced stress change in unconventional reservoirs using a novel fundamental solution of poromechanics in a half space
Available online 6 February 2026
The production of fractured unconventional reservoirs induces stress changes, which will affect the production performance of neighboring wells. To quantify such effects, the analytical solution is...
Full waveform inversion via BEEMD-based gradient decomposition
Available online 6 February 2026
Full waveform inversion (FWI) gradient inherently contains both tomographic and migration components, which are responsible for updating large-scale background velocity and small-scale structural details,...
Gas-solid two-phase flow erosion of needle throttle valve in shale gas field based on CFD-DEM model
Available online 5 February 2026
Needle throttle valve (NTV) is a key equipment to ensure the safe production of shale gas fields, but it is often seriously eroded by the solid particles in the produced gas. At this work, the CFD-DEM...
Stress characteristics and sealing mechanism of steel-titanium heterogeneous drill pipe joints
Available online 5 February 2026
Titanium alloy drill pipes exhibit promising potential for ultra-deep well drilling due to their high specific strength and superior corrosion resistance. However, the engagement surfaces of the pin...
Numerical investigation of the effect of reactive transport in rock matrix on fracture fluid flow and heat transfer behavior in enhanced geothermal systems
Available online 3 February 2026
Quantitatively understanding reactive transport in matrix-fracture systems and the corresponding effect on reservoir fluid flow and heat transfer behavior is essential for the prediction of long-term...
Research on the intelligent characterization of interwell section architecture based on Bayesian expert systems
Available online 3 February 2026
The characterization of interwell section architecture is critical for revealing reservoir lateral heterogeneity and connectivity. This process integrates well and seismic data with geological knowledge...
Molecular insights into asphaltene desorption from silica surface by ionic and non-ionic nitrogen-based additives
Available online 31 January 2026
The strong adsorption of asphaltenes on reservoir minerals is a major constraint on heavy oil recovery. Although some nitrogen-based chemicals have shown promise in desorbing asphaltenes, their working...
CO2-promoted Cr redox cycle driven ethane catalytic oxidative dehydrogenation to ethylene and its comparative study to ethane direct catalytic dehydrogenation
Available online 31 January 2026
In the field of ethane conversion, Cr/ZSM-5 catalysts have received considerable attention for application in direct dehydrogenation (DH) and CO2-assisted oxidative dehydrogenation (CO2-ODH) reactions,...
A three-dimensional fuzzy dynamic risk assessment model with dynamic cloud weights for human operational errors in oil and gas pipelines
Available online 31 January 2026
Given the inherent complexity of human behavior, situational dependencies, and fragmented data, accurately assessing the risks arising from human operational errors in oil and gas pipelines remains...
The present-day stress state and its impact on drilling and reservoir management in a field of the Abadan Plain, Southwest Iran
Available online 30 January 2026
The present-day stress state of the Abadan Plain in Southwest Iran is a critical factor in the management of drilling operations and reservoir development. This research integrates multiple data sources,...
Corrected Model and Charts for Corrosion Probe Monitoring Effectiveness in High-Water-Cut Crude Oil Gathering Pipelines with Elevation Changes
Available online 30 January 2026
Frequent corrosion perforation and monitoring effectiveness deviation have been observed in the undulating segments of high-water-cut crude oil gathering pipelines. This study proposes a corrected model...
Physics-informed autoencoder with Bayesian optimization for real-time stuck pipe risk prediction
Available online 30 January 2026
The issue of stuck pipe can significantly increase non-productive time, even leading to accidents such as drill string failure, which causes a sharp rise in drilling costs. Therefore, timely and accurate...
Molecular dynamics simulation for effect of stress on quartz dissolution: implication on the development of high-quality reservoirs in Foreland basins
Available online 30 January 2026
The dissolution of unstable minerals such as feldspar and carbonate is currently recognized as the primary cause of the dissolution pores in most clastic rock reservoirs globally. However, research...
An integrated deep learning framework for full-cycle CCUS-EOR evaluation and optimization under carbon neutrality
Available online 27 January 2026
Carbon capture, enhanced oil recovery (EOR)-utilization and storage (CCUS-EOR) is recognized as an effective approach to mitigate greenhouse gas emissions while delivering economic benefits. However,...
Mesoscopic mechanism of shear breakdown and static recovery characteristics of waxy crude oil gel structures
Available online 25 January 2026
The primary method for transporting high-wax crude oil is heated pipeline transmission. During shutdowns, the gelled state and structural strength of the congealed oil directly determine the restart...
Efficient P/S and up/down wavefield decomposition in vertical transversely isotropic media and its application in elastic reverse time migration
Available online 25 January 2026
Common artifacts existing in anisotropic elastic reverse time migration (ERTM) image are mainly cross-talk artifacts, false images and low-frequency noise. To address these problems, we propose a new...
Effects of Lamina on petrophysical properties and brittleness of shales: Insight from lamina-scale experiment and fracture propagation simulation
Available online 25 January 2026
Accurate shale characterization is hampered by the lack of high-resolution analytical techniques to probe the in situ petrophysical and mechanical properties at the lamina scale. Here we report for...
Fracture propagation mechanisms of cross-layer fracturing with directional perforation in off-target horizontal wells
Available online 25 January 2026
Multi-stage fracturing with horizontal wells is a pivotal technique for developing the unconventional reservoirs. Owing to complex geological conditions coupled with inherent limitations in existing...
A quantitative interpretation method of gas kick driven by physics-informed neural network
Available online 25 January 2026
To address the challenges associated with predicting wellbore fluid flow behavior and gas kick rates in deep, complex formations following gas kick events, this study develops a quantitative interpretation...
Coordinate-transformation-based fast sweeping method for the factored eikonal equation on triangular meshes
Available online 23 January 2026
Accurate traveltime computation in complex geometries is crucial for seismological applications such as traveltime tomography and migration. However, eikonal solvers relying on finite-differences encounter...
Effect of CO2 pre-injection on fracture propagation morphology in shale reservoirs under CO2 hybrid fracturing
Available online 23 January 2026
Supercritical CO2 fracturing, as a waterless fracturing technology, is attracting increasing attention in the shale oil reservoir development industry. In recent years, a novel CO2 hybrid fracturing...
The control of paleo-geomorphology on the depositional architecture of a Late Jurassic axial submarine fan, North Sea, UK
Available online 23 January 2026
The depositional architecture of submarine fans in rift basins is significantly controlled by complex geomorphology created by widespread normal faults, presenting a key challenge in deep-water sedimentology....
Climate forcing of variations in sedimentary environments and organic matter accumulation in the Qingshankou Formation, Songliao Basin (NE China): Evidence from organic petrology and geochemistry
Available online 23 January 2026
Lacustrine organic matter (OM) accumulation is a critical Earth’s carbon sink and a source of hydrocarbon resources. The Upper Cretaceous Qingshankou Formation in the Songliao Basin archives an organic-rich...