Multiple size group modeling of gas–liquid flow instability and energy conversion in a multiphase pump: Effects of inlet gas volume fraction
July 2026
The variation of inlet gas volume fraction (IGVF) intensifies bubble breakup and coalescence behaviors, and the resulting evolution of gas pockets may directly impact the energy performance and stability...
Experimental investigations on spontaneous imbibition process applied in tight conglomerate oil reservoir
July 2026
In this research, experimental studies were conducted to investigate the influences of permeability and surfactant solution on varying permeability cores in the spontaneous imbibition process. Totally,...
Staged propagation mechanisms and their implications for fracture interaction and fracture swarm formation
July 2026
Hydraulic fracture swarms are widely observed in post-fracturing core samples, yet their formation mechanisms remain incompletely understood. In this study, we employ a visualized experimental system...
Progressive pseudo-label self-supervised waveform inversion and imaging based on multiscale strategies: A marine data case application
July 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...
A systematic two-stage optimization framework for congestion locating and multi-component expansion planning in natural gas pipeline networks
July 2026
As global energy demand continues to rise, natural gas pipeline systems face significant challenges, including congestion during peak demand periods and the complexities of system expansion. This paper...
Formation and preservation processes of Ediacaran microbial dolomite pore system, evidence from the Qigebrak Formation, Tarim Basin, China
July 2026
Ancient microbial dolomite reservoirs exhibit distinct advantages in both their formation and preservation processes, making them significant hosts for hydrocarbon resources. However, the interaction...
Experimental study on the droplet breakup process in contracted pore throat microchannels
July 2026
This paper mainly studies the droplet breaking behavior in contracted pore throat microchannels. The droplet breaking process consists of four stages: extrusion, stretching, sub-droplet growth and fracture....
A novel interpretable machine learning framework for predicting gas-bearing properties of tight sandstone reservoirs
July 2026
Predicting gas-bearing properties in tight sandstone reservoirs presents a global challenge. Traditional methods based on well log interpretation rely heavily on individual experience, which can introduce...
A novel method for drilling rate of penetration prediction and transfer generalization based on physics-informed neural networks
July 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....
Application of 2D full-waveform inversion for characterizing potential gas reservoirs
July 2026
The application of full waveform inversion (FWI) on field data is currently a widely concerned challenge in seismic exploration. FWI has been proven on synthetic data to have the ability to obtain high-accuracy...
Planning and operation optimization for oilfield negative carbon integrated energy system considering source-load interaction
July 2026
Towards the carbon neutrality, the traditional fossil fuel-based energy supply in oilfield urgently needs to be replaced by the integrated energy systems (IES) based on zero carbon and negative carbon...
Application of the AutoMix hybrid model for in-situ stress prediction in shale gas reservoirs
July 2026
Accurate in-situ stress prediction is critical to optimizing hydraulic fracturing design and enhancing reservoir stimulation in deep shale gas development. However, traditional methods often struggle...
Evolution mechanism of shale permeability considering competitive adsorption-induced swelling and slippage effect of binary CO2/CH4: Implications for CO2-ESGR
July 2026
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....
Numerical investigation of the effect of reactive transport in rock matrix on fracture fluid flow and heat transfer behavior in enhanced geothermal systems
July 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...
Enhancing the performance of high-temperature, high-salinity, high-density water-based drilling fluid using a rheological modifier with low viscosity and high yield point characteristic
July 2026
Deep oil and gas development is critical for ensuring stable fossil energy supply and facilitating a smooth energy transition. However, under extreme high-temperature, high-salinity, and high-density...
Full waveform inversion via BEEMD-based gradient decomposition
July 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,...
Enhancement of NMR relaxation inversion: A review on pretreatment denoising
July 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...
Fluid flow visualization and resistivity variations during gas-water displacement in carbonate rock: Implications for reservoir evaluation
July 2026
Carbonate reservoirs exhibit strong pore structure heterogeneity, leading to complex electrical properties and posing challenges for fluid saturation evaluation through well logging. To clarify the...
The effect of geological features on hydraulic fracture propagation guided by radial boreholes in the thin interbedded reservoirs
July 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...
Research on low-viscosity high-elastic fracturing fluid system with specific recognition and supramolecular assembly
July 2026
Fracturing fluids for tight sandstone reservoirs often suffer from issues such as low sand-carrying efficiency, difficulties in fracturing and gel breaking caused by high viscosity, and increased costs...
Integration of multi-source geological engineering data for fracturing parameter optimization model
July 2026
Fracturing parameter design is critical to the economic viability and effectiveness of reservoir stimulation, making multi-stage hydraulic fracturing in horizontal wells a cornerstone technology for...
A three-dimensional fuzzy dynamic risk assessment model with dynamic cloud weights for human operational errors in oil and gas pipelines
July 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...
CO2-promoted Cr redox cycle driven ethane catalytic oxidative dehydrogenation to ethylene and its comparative study to ethane direct catalytic dehydrogenation
July 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,...
Magnetic coupling mechanism between high-intensity magnet and multiple close-range casings and casing positioning method: Numerical simulation and experimental study
July 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...
Closed-loop porosity inversion method with well-seismic joint constraints based on wavelet transform
July 2026
Porosity is one of the key physical properties of reservoir rocks, directly influencing their capacity to store and transmit oil and gas. Traditional porosity inversion methods are often constrained...
