Dual-branch wavelet-fusion U-Net for vibroseis harmonic noise attenuation
Available online 8 May 2026
Vibroseis is widely used in land surveys, but source-ground coupling and equipment nonlinearities generate second- and higher-order harmonics as well as narrowband resonance lines. These source-related...
Diffusion-IDEA: A conditional diffusion framework for well log imputation
Available online 7 May 2026
Well log data constitute a primary source of critical information for quantitative reservoir evaluation; however, acquisition failures, wellbore irregularities, and constraints imposed by the log program...
Formation drillability characterization method based on multi-scale convolutional neural representation with stacking ensemble
Available online 6 May 2026
Formation drillability characteristics are critical for optimizing drilling performance and designing bottom-hole assemblies. Accurate estimation of drillability parameters, including uniaxial compressive...
Competitive fracture propagation in Da'an deep shale: A study based on multi-adjacent well collaborative distributed optical fiber monitoring
Available online 6 May 2026
The competitive propagation of hydraulic fractures during multi-cluster stimulations poses a critical challenge to achieving effective reservoir stimulation in deep shale formations. To address this,...
Knowledge-guided deep learning inversion of electromagnetic look-ahead logging-while-drilling data
Available online 6 May 2026
Inversion of electromagnetic look-ahead logging-while-drilling (LWD) data enables real-time estimation of formation properties ahead of the drill bit, providing critical support for proactive geosteering....
Low-temperature oxidation of light crude oil: Molecular composition and deposition characteristics of oxidation products
Available online 5 May 2026
Air flooding is an important enhanced oil recovery technology for light crude oil development. Low temperature oxidation (LTO) occurs when air is injected into light crude oil, a large number of active...
Research progress and development prospects on critical challenges in deepwater riserless drill string dynamics
Available online 5 May 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...
Investigating the impact of well data and seismic resolution on porosity prediction using Bayesian deep learning
Available online 4 May 2026
Seismic porosity inversion is inherently ill-posed and highly sensitive to seismic resolution, geological complexity, and well density, particularly in thin-bedded heterogeneous reservoirs. Although...
A novel in situ polymerizing gel–fiber composite system with enhanced strength and degradability for temporary plugging
Available online 4 May 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...
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
Available online 2 May 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,...
Imaging enhancement for towed-streamer data using OBN data based on deep learning
Available online 30 April 2026
Deep oil and gas exploration has become a critical frontier in offshore oil and gas development due to growing global energy demand. However, traditional towed-streamer seismic acquisition often struggles...
Trans-layer inversion of logging-while-drilling azimuthal electromagnetic measurements guided by multi-boundary detection capability assessment
Available online 30 April 2026
The inversion of logging-while-drilling azimuthal electromagnetic measurements is essential for geosteering in horizontal wells and optimizing reservoir development. Conventional fixed-layer inversion...
Defining conductivity optimal correlation resolution (COCR) for 3D scanning of acid fracture surface
Available online 30 April 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...
Fault intelligent identification of seismic data using two-stage method based on coherent attribute
Available online 30 April 2026
Faults play a crucial role in the storage and migration of oil and gas, and accurate identification of fault structures is essential for reliable subsurface interpretation and efficient resource development....
TOC
April 2026
Three-dimensional heat transfer model of oil-water two-phase stratified flow
April 2026
Oil-water stratified flow, a fundamental pattern in multiphase pipe flow, is commonly encountered in offshore petroleum production and transportation. Although hydraulic characteristics of this flow...
Possible origin of deep hydrocarbons and transformation of complex petroleum systems within the Earth's crust
April 2026
We demonstrate that the conditions established in laboratory settings—such as initial reaction products, thermobaric parameters, and redox environments—are indeed analogous to those that may exist in...
Technical enhancement amine gas treating and cost reduction by assisting response surface methodology
April 2026
The process of amine sweetening of natural gas is crucial to purify it, meet environmental regulations, and boost its commercial value. This study proposes a novel hybrid optimization framework combining...
Effects of swelling clay layers on fluid production from hydrate-bearing sediments induced by depressurization
April 2026
Clay-rich sediments are common in natural gas hydrate reservoirs and pose significant technical challenges in past field production tests. Among these, Na-montmorillonite significantly affects methane...
Effects of lamina on petrophysical properties and brittleness of shales: Insight from lamina-scale experiment and fracture propagation simulation
April 2026
Accurate shale characterization is hampered by the lack of high-resolution analytical techniques to probe the in situ petrophysical and mechanical properties at the lamina scale. Here we report for...
Structural-state integrated modeling of multi-mechanism formation damage during drilling–completion
April 2026
To address the modeling fragmentation and predictive deviation caused by the conventional “single-mechanism, weakly coupled, additive response” approach in formation damage research, this study proposes...
Advances in intelligent defect recognition method for oil and gas pipeline weld X-ray image
April 2026
Long-distance pipelines are essential for transporting oil and gas, with the quality of welds directly affecting their safety and reliability. Weld defects can emerge during the welding process due...
Pore structure-controlled CO2 huff-n-puff efficiency in Jimusar shale oil reservoirs: Insights from classified oil reservoirs
April 2026
CO2 huff-n-puff is a promising enhanced oil recovery technique for shale oil reservoirs, but its efficiency in relation to pore structure across classified oil reservoirs remains unclear. This study...
A novel local maximum synchrosqueezing W transform for reservoir characterization
April 2026
Time-frequency analysis (TFA) serves as a critical tool in seismic signal processing and interpretation, particularly for characterizing non-stationary signals. However, conventional TFA methods, such...
A new method for fluid saturation calculation in low resistivity oil reservoirs with nuclear magnetic resonance-constrained triple-water resistivity model
April 2026
To address the evaluation difficulty of hydrocarbon saturation in low resistivity reservoirs, an innovative method for calculating oil saturation is proposed using a nuclear magnetic resonance (NMR)-constrained...
