A novel ultra-high-temperature emulsifier stable at 250 °C for oil-based drilling fluids: Synthesis, performance, and mechanism
September 2026
The ultra-high temperature conditions encountered in deep oil and gas exploration represent a critical challenge to oil-based drilling fluid (OBDF) technology. Conventional emulsifiers suffer from rapid...
Classification of shale oil micro-occurrence types and flow behavior: Combining QSGSM, pore network, machine learning, and LBM
September 2026
Shale oil occurs in varying forms within porous media, with diverse micro-occurrences exhibiting intricate topological characteristics within the pores. The impact of shale oil presence on fluid flow...
Solubility and dissolution mechanism of novel multi-ester headgroup surfactants in supercritical CO2
September 2026
To address the limited solubility and applicability of conventional hydrocarbon surfactants in supercritical CO2, a series of multi-ester headgroup surfactants were designed and synthesized by leveraging...
Formation drillability characterization method based on multi-scale convolutional neural representation with stacking ensemble
September 2026
Formation drillability characteristics are critical for optimizing drilling performance and designing bottom-hole assemblies. Accurate estimation of drillability parameters, including uniaxial compressive...
Investigation on force responses in ridged diamond element breaking granite
September 2026
Ridged diamond element (RDE), a new 3D shaped PDC cutter, has higher impact and wear resistance than conventional plane PDC cutter. Furthermore, RDE also can significantly improve the rock-breaking...
Differential inorganic–organic porosity evolution in the Wufeng–Longmaxi Shale, southern Sichuan Basin, China
September 2026
Quantifying how inorganic and organic porosity co-evolve in shale during burial and later uplift is a key scientific issue for constraining shale-gas occurrence, storage capacity, and enrichment mechanisms....
STISR: A stacked tucker implicit seismic reparameterization framework for 3D seismic data denoising
September 2026
High-quality seismic data are critical for characterizing complex geological reservoirs, yet persistent noise contamination remains challenging. Parameterization methods separate signals from noise...
Optical and rheological properties of carbon quantum dots regenerated aged asphalt based on molecular simulation and experiments
September 2026
To investigate the rheological and optical properties of carbon quantum dots (CQDs)-regenerated aged asphalt (CQDsRA), four types of CQDs, C34H14O2 (CQDs-1), C52H72O14 (CQDs-2), C39H30N6O10 (CQDs-3),...
Bifunctional heterojunction catalyst adsorption-promoted catalytic oxidation of aromatic sulfides high-value conversion
September 2026
With the increasing need for high-value utilization of diesel components, catalytic oxidative desulfurization (ODS) emerges as an efficient non-hydrogenation approach to desulfurization and utilization...
Potential origin of natural vanadium hydride in the Earth's shallow mantle
September 2026
Metal hydrides have emerged as promising candidates for energy storage in clean hydrogen systems. While these materials are typically synthesized under controlled laboratory conditions, naturally occurring...
Influence of pore structure on high-voltage electrical pulse rock breaking: A coupled numerical approach
September 2026
High-voltage electrical pulse (HVEP) rock-breaking technology is extensively utilized due to its advantages of high energy density, controllable fragmentation zones, and tunable energy output. However,...
Wettability-aware phase-field micro-continuum modeling of two-phase carbonate acidizing with residual CO2
September 2026
Following pre-CO2 fracturing of carbonate reservoirs, residual CO2 remaining in and remobilized from the wellbore-fracture system may introduce multiphase-flow and interfacial effects that are often...
Impacts of temperature and pressure on light hydrocarbon parameters during gas washing: Results from simulation experiments
September 2026
As a secondary alteration process in oil reservoirs and a critical mechanism for light oil and condensate formation, gas washing is predominantly governed by temperature and pressure. However, the dynamic...
Deep learning-based upscaling for reservoir models on corner-point grids via finite-volume physics-informed Fourier neural operator
September 2026
This study proposes a neural network (NN)-assisted, physics-informed framework for global flow-based upscaling to accelerate reservoir simulation. While traditional global upscaling methods can accurately...
Study on the cutting characteristics of different types of abrasive grains on workover bits in the high-temperature environment of the deep wellbore
September 2026
At present, drilling bits for workover under high-temperature conditions are facing technical bottlenecks such as low work efficiency and rapid wear, especially their working characteristics in the...
A low-dimensional dynamic model for slug elimination in pipeline-riser system
September 2026
A low-dimensional model for slug elimination is established to improve the applicability and accuracy of current models. Inspired by the flow stages of severe slug flow, the model in this paper is divided...
UAV-based pipeline leakage detection via acoustics with owl auditory-inspired OPEI representation
September 2026
To address the low sensitivity of visual UAV inspection in leakage detection for above-ground natural gas pipelines, an acoustic detection method inspired by the owl auditory mechanism was developed....
Research progress and development prospects on critical challenges in deepwater riserless drill string dynamics
September 2026
With the ongoing expansion of oil and gas drilling into deeper waters, riserless drilling technology has shown prominent advantages in deepwater drilling applications. The structural design and operational...
A knowledge-guided multi-task learning method for drill cuttings analysis
September 2026
Drill cuttings serve as a fundamental source of geological information in oil and gas exploration and development. However, traditional analysis remains largely manual, resulting in low efficiency and...
Stochastic simulation and finely characterization of heterogeneous reservoirs based on MSGAN and BicycleGAN
September 2026
Subsurface reservoirs can be constructed based on Generative Adversarial Networks (GANs), but some challenges cannot be overlooked. For example, both prior geological patterns and knowledge are hardly...
Seismic resolution enhancement via deep learning with teacher-student network and domain adaptation
September 2026
High-resolution processing of seismic signals is crucial for enhancing the ability to characterize underground geological structures in detail and improving the accuracy of thin-layer reservoir identification....
Effects of initial damage degrees on crack propagation and permeability characteristics of coal subjected to cyclic loading
September 2026
Once deep coal rock is disturbed by engineering operations, coal exhibits different initial damage degrees (IDDs), which may govern subsequent crack propagation and permeability evolution under cyclic...
Micron- to meter-scale shale oil migration differentiation and mobility effects: New insights into high-mobility migration sweet spot and sustainable shale oil recovery
September 2026
Understanding multiscale migration differentiation within shale oil systems is critical for identifying high-mobility migration sweet spots that facilitate the sustainable shale oil recovery. However,...
A prediction method for safe mud density of natural gas hydrate reservoirs under temperature-pressure dual control
September 2026
Wellbore instability is one of the most encountered issues during hydrate exploration, which correlates with mud density and temperature. However, current studies ignore the effect of mud temperature...
Experimental and simulation of nanofluid-enhanced tubular heating process for waxy crude oil storage tank
September 2026
Traditional tubular heating systems using water as the heat transfer fluid suffer from high energy consumption and uneven heating. This study proposes an innovative approach: employing nanofluids as...
