Design and mechanism of side chain-functionalized polysuccinimide for efficient demulsification of crude oil-in-water emulsions at ambient temperature
August 2026
The development of efficient, fast-acting demulsifiers that function effectively at low temperatures is crucial for treating high-water-content crude oil fluids in sustainable oilfield development....
Micro-migration and accumulation of shale oil within lacustrine organic matter-rich tuffaceous shale: Insights from high-precision thermal simulation experiment on various laminasets
August 2026
The dynamic process of generation, expulsion, retention, and accumulation of shale oil within laminated shale has attracted considerable attention because it provides important geological insights into...
Experimental study on the zonal isolation performance of cement sheaths with SBT logging
August 2026
The integrity of the cement sheath's zonal isolation in oil and gas wells is a crucial safeguard for safe production and operations in oilfields. However, the zonal isolation integrity of the cement...
One hundred grand challenges in petroleum science
August 2026
Petroleum science stands at a historic turning point: exploration extends to ultra-deep and deepwater frontiers, unconventional resources become dominant, and the dual imperatives of carbon neutrality...
A novel in situ polymerizing gel–fiber composite system with enhanced strength and degradability for temporary plugging
August 2026
The plugging performance and degradation properties of temporary plugging agents remain critical challenges in diverting fracturing technology for deep, high-temperature reservoirs. Conventional particle–fiber...
Defining conductivity optimal correlation resolution (COCR) for 3D scanning of acid fracture surface
August 2026
Production from carbonate reservoirs can be significantly improved through acid fracturing. Creating acid fractures with high conductivity is a key factor in enhancing production. 3D scanning technology...
Corrected model and charts for corrosion probe monitoring effectiveness in high-water-cut crude oil gathering pipelines with elevation changes
August 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...
Investigation of the effect of water-vapour-containing hydrogen-blended natural gas fraction on the condensation performance of a Laval nozzle using BBD and PSO
August 2026
Hydrogen-blended natural gas delivered via pipeline networks supports the development of hydrogen energy. However, hydrogen-blended natural gas containing water vapour significantly decreases delivery...
Integrating rock mechanics and optimized mechanical specific energy for real-time pore pressure estimation in high-temperature and high-pressure drilling
August 2026
Accurate real-time estimation of pore pressure (Pp) is essential in high-temperature and high-pressure (HTHP) wells to prevent blowouts and lost circulation, given the complexity of their pressure regimes....
Depth-domain inversion with angle-domain point-spread function for quantitative reservoir characterization: A case study from the Northern Viking Graben, North Sea
August 2026
Amplitude-preserving depth-domain prestack inversion using the point-spread function (PSF) has emerged as a powerful approach for quantitative reservoir characterization. This technique employs the...
Quantifying the through-going evolution of strike-slip fault zones: Insights from analogue modeling
August 2026
Large strike-slip fault zones commonly develop through-going architectures through progressive linkage of fault segments. However, quantitatively characterizing the through-going evolution of strike-slip...
Restoration of karst paleogeomorphology and its natural gas geological implications: An example from the Ma5 member of the Ordovician Majiagou Formation in the central Ordos Basin, NW China
August 2026
Carbonate weathering crust reservoirs have consistently represented a pivotal area of research in hydrocarbon exploitation. Karst paleogeomorphology emerges from the intricate interplay of weathering,...
Enhancing reservoir characterization via lithology-constrained machine learning methods: The deep Jurassic Sangonghe tight sandstones in the Turpan-Hami Basin, China
August 2026
Reliable porosity prediction in deep tight sandstones remains a persistent challenge due to complex lithological heterogeneity and weak correlations between conventional logs and reservoir parameters....
Occurrence characterizations and controlling factors of lacustrine shale pore fluids in the Qingshankou Formation, Sanzhao Sag, Songliao Basin, China
August 2026
The pore fluid occurrence predominantly restricts shale oil production. Few studies have addressed both pore oil and water concurrently. In an effort to delineate the distribution of pore fluids within...
Hessian-based elastic reflection waveform inversion with scale fusion strategy
August 2026
Full waveform inversion (FWI) theoretically has the potential to recover high-resolution and accurate velocity models. However, FWI primarily relies on refractions and turning waves, and therefore often...
Characteristic reflection wave-equation traveltime inversion using full gradient
August 2026
With the advancement of oil and gas exploration into deepwater and deep formations, constructing accurate velocity models from reflection wave data has become essential for seismic imaging. The wave-equation-based...
Influence mechanism of adjacent formation interfaces on acoustic wave modes in horizontal wells
August 2026
Although horizontal well technology has been widely adopted in hydrocarbon exploration, acoustic logging interpretation remains challenging under complex formation conditions, particularly when formation...
Physics-informed autoencoder with Bayesian optimization for real-time stuck pipe risk prediction
August 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...
Chemical plugging systems for preventing gas channeling in CO2 flooding: Progress and prospects
August 2026
As an important component of carbon capture, utilization, and storage (CCUS), CO2 flooding technology can improve oil recovery while realizing CO2 geological storage. However, due to reservoir heterogeneity...
Advanced fluid-loss control in drilling fluids: A review on rationally designed temperature- and salt-tolerant synthetic polymers
August 2026
To meet the ever-increasing energy demands, oil and gas exploration is progressively extending into deep formations with high temperatures and high salinity, presenting new challenges for the performance...
The influence of energy enhancement on the morphology of hydraulic fractures based on a fully-coupled XFEM method
August 2026
Pre-fracturing energy enhancement has shown promising potential to improve stimulation performance in low-permeability reservoirs, yet its influence on subsequent hydraulic fracturing remains unclear....
TOC
August 2026
OFC
August 2026
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,...
