A model for shale gas flow and permeability leveraging coupled transport mechanisms
Available online 12 March 2026
The extraction of shale gas is challenged by complex flow mechanisms and significant microscale effects within nanoscale pores. Existing models often overlook key flow mechanisms such as end effects,...
Numerical simulation of integrated “fracturing-soaking-production” in tight reservoirs
Available online 12 March 2026
Integrated fracturing-flooding is a key technology to solve the problem of “difficult injection and difficult extraction” in tight oil and gas reservoirs. Focusing on three key physical processes in...
Mechanisms of CO2 nanobubble-enhanced oil recovery: Interfacial regulation and flow behavior control in porous media
Available online 12 March 2026
Nanobubbles (NBs) have unique physicochemical properties, including a large specific surface area and high mass transfer efficiency. They can be produced using environmentally friendly, low-cost physical...
The effect of geological features on hydraulic fracture propagation guided by radial boreholes in the thin interbedded reservoirs
Available online 12 March 2026
High-strength interlayers and lithological interfaces limit vertical fracture height and stimulation efficiency in the thin interbedded reservoir. This paper proposes a novel radial borehole fracturing...
Progressive Pseudo-label Self-supervised Waveform Inversion and Imaging Based On Multiscale Strategies: A Marine Data Case Application
Available online 11 March 2026
Full waveform inversion (FWI) and reverse time migration (RTM) have shown great potential in subsurface imaging, yet they remain challenged by migration artifacts and limited deep illumination. A novel...
Study on the pyrolysis of kerogen at varying moisture contents: Experimental modeling and ReaxFF simulation
Available online 11 March 2026
Hydrocarbon generation from shale usually occurs in a reducing aqueous environment. Understanding the pyrolysis characteristics of shale kerogen under hydrous conditions is crucial for elucidating the...
A critical review on deep-water oil and gas development equipment research and application: Floating platform, mooring cable and pile foundation
Available online 10 March 2026
As a crucial component of the global energy supply, deep-sea oil and gas resources exist in highly complex environments and pose significant technical challenges, necessitating reliance on floating...
A novel method for drilling rate of penetration prediction and transfer generalization based on physics-informed neural networks
Available online 9 March 2026
The rate of penetration (ROP) is a critical statistic for evaluating drilling efficiency, and its accurate prediction is essential for improving drilling performance and reducing operational costs....
Source and thermochemical sulfate reduction of natural gases in the Ordovician carbonate–evaporite assemblage in the Ordos Basin, China
Available online 7 March 2026
Thermochemical sulfate reduction (TSR) commonly occurs in carbonate–evaporite assemblages, making the identification of gas sources difficult. Given that the sources of natural gases in the Ordovician...
A new approach for analyzing the formation and evolution of the Mesoproterozoic petroleum system in the Ordos Basin, China: Insights from a nested simulation with local grid refinement
Available online 7 March 2026
The study on Meso–Neoproterozoic petroleum systems has attracted extensive attention. However, it still faces some problems such as the availability of hydrocarbon accumulating elements, complexity...
Assessment of VOC mitigation from equipment leaks in petroleum refining in Guangdong, China: Insights from a long-term leak detection and repair (LDAR) implementation
Available online 7 March 2026
Fugitive volatile organic compound (VOC) emissions from equipment leaks in the petroleum refining industry threaten ambient air quality and human health. The impact of a long-term leak detection and...
Enhancement of NMR relaxation inversion- A review on pretreatment denoising
Available online 7 March 2026
Nuclear magnetic resonance (NMR) is a sophisticated technology to gain insights into the earth’s physical and chemical properties, such as porosity, permeability, fluid viscosity, and pore structure...
Preparation and performance evaluation of phase change material microcapsules for smart regulation of drilling fluid temperature for marine gas hydrate reservoirs
Available online 6 March 2026
In the drilling process of hydrates, hydrate decomposition and regeneration can cause wellbore collapse and plugging. Herein, phase change materials (PCMs) were introduced into the drilling fluids to...
Influence of pore structure on the dynamic response of porous rocks under high strain-rate impact: A mesoscale numerical investigation
Available online 5 March 2026
This study establishes a numerical simulation method for modeling the dynamic response of porous rocks under high strain-rate impacts and verifies its robustness, accuracy, and reproducibility. A systematic...
Magnetic coupling mechanism between high-intensity magnet and multiple close-range casings and casing positioning method: Numerical simulation and experimental study
Available online 5 March 2026
In cluster wellbores, where casings are densely distributed with complex spatial relationships, drilling new wells poses a high risk of collision. To mitigate this, high-precision ranging and positioning...
Optimization of injection parameters in offshore low permeability reservoir based on a compositional embedded discrete fracture model
Available online 5 March 2026
Offshore development tends to aim for high production with fewer wells, which leads to large well spacing and wide range of low-pressure gradient. Compared with onshore, the low-velocity nonlinear flow,...
Co-pyrolysis of oily sludge and lignin for fabrication of high-performance adsorbent for oily wastewater treatment
Available online 4 March 2026
Oily sludge, a hazardous by-product of the petroleum industry, poses significant environmental risks due to its elevated levels of hydrocarbons and heavy metals. As conventional disposal methods often...
Pressure-regulated pore structure evolution and dielectric performance enhancement in MgO/epoxy composite systems
Available online 3 March 2026
With the surging demand for unconventional oil and gas extraction, the insulation performance of downhole high-power electric heaters has become a critical bottleneck limiting long-term stable operation....
Mechanisms of miscible gas injection for ultra-low permeability carbonate reservoirs:A case study of the S reservoir in the H Oilfield, Iraq
Available online 3 March 2026
The S reservoir is a typical Middle Eastern carbonate formation characterized by a formation temperature of 89 °C, salinity of 200,000 mg/L, and permeability below 1 mD. It exhibits low and continuously...
A new model to predict the Electrical Submersible Pump’s characteristic curves under highly viscous flow
Available online 3 March 2026
Electrical Submersible Pumps are a key artificial lift method, particularly in challenging oilfield operations involving highly viscous fluids such as heavy oil, emulsions, or subsea boosting applications....
Competition between viscous and capillary forces triggers diversity of fluid distribution and imbibition modes
February 2026
Spontaneous imbibition is the process in which the wetting phase displaces a non-wetting phase under the action of capillary forces. However, variations in interfacial properties, imbibition directions,...
Seismic simulation for distributed acoustic sensing data using a novel stress and strain-rate elastic wave equation
February 2026
Distributed acoustic sensing (DAS) is an advanced seismic acquisition technology with many advantages, such as low cost, wide frequency band, dense spatial sampling, and continuous recording. The straight...
Helium dynamic accumulation process in the Hetianhe gas field, Tarim Basin, northwest China
February 2026
Helium (He) is considered an indispensable rare resource due to its critical applications in high-tech fields such as low-temperature superconductivity, magnetic resonance imaging, and aerospace. However,...
Study of the effect of nanoemulsion on the EOR in low-permeability, highly waxy oil reservoirs based on NMR displacement experiments
February 2026
Wax precipitation damage caused by cold water injection or temperature reduction is very commonly seen in the development of waxy crude oil reservoirs. Various methods for eliminating wax precipitation...
A machine learning method for evaluating shale gas production based on the TCN-PgInformer model
February 2026
Since shale gas is a valuable energy resource, effective planning for its extraction and utilization depends on precise forecasting of gas well production. Conventional models need long computation...