Microscopic experiments and simulations of CO2 huff-n-puff displacement mechanism considering heterogeneity and fractures
Available online 14 March 2026
Heterogeneity and fractures significantly influence oil and gas migration. However, current research remains insufficient in clearly visualizing CO2 displacement mechanisms under such reservoir conditions....
Flocculation–microfiltration integration for high-salinity oilfield offshore produced water treatment
Available online 14 March 2026
This study evaluated an integrated treatment system that combines chemical destabilization (through flocculation) with membrane-based separation (via submerged microfiltration) for removing of dispersed...
Ensemble-based interpretation of Partitioning Inter-Well Tracer Tests for residual saturation and permeability estimation
Available online 14 March 2026
Partitioning Inter-Well Tracer Test (PITT) is a direct method for quantifying remaining oil saturation (), but conventional interpretation workflows can lead to significant overestimation if neglecting...
Evolution of multistage dolomitization fluids in the Upper Ediacaran Qigebrak Formation, northern Tarim Basin, China: Effects on reservoir formation
Available online 14 March 2026
The deep-buried dolomites of the Upper Ediacaran Qigebrak Formation in the Tarim Basin possess substantial hydrocarbon potential. Although diagenetic processes, particularly dolomitization, are recognized...
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
Available online 14 March 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...
Characteristics of fracturing fluid water blocking damage in tight gas reservoirs based on two-dimensional NMR T1-T2
Available online 14 March 2026
In the development of tight gas reservoirs, effective flowback of fracturing fluids is crucial for enhancing production. However, water blocking damage caused by fluid retention significantly affects...
Laboratory testing of clayey-silty hydrate reservoir exploitation: Considering the permeability-stress coupling effect
Available online 14 March 2026
Elucidating the multi-field, multi-phase coupling mechanisms in submarine hydrate reservoirs is essential for releasing their energy potential. Current research gaps remain in understanding the permeability-stress...
Conquering high-temperature acidic corrosion with a molecular anvil: A robust pyridinium quaternary ammonium salt
Available online 14 March 2026
Achieving robust corrosion protection under extreme acidic and high-temperature conditions remains a formidable challenge in the oil and gas industry. In response, this work demonstrates a molecularly...
Preparation and performance evaluation of self-degrading core–shell structure temporary plugging agent
Available online 14 March 2026
Temporary plugging agents (TPAs) are widely used in oilfield development due to their self-removal after operations and their minimal effect on reservoirs. However, the current methods used to remove...
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,...