Insight into the role of masking agents in inhibiting water-based mud contamination of oil well cement slurry
June 2026
During cementing operations, unavoidable contact between water-based mud (WBM) and oil well cement (OWC) often degrades OWC performance. This is particularly problematic in natural gas or offshore wells,...
Multi-spherical interactions driving the generation, accumulation and distribution of natural gases and CO2 resources in the Changling Fault Depression, Songliao Basin, China
June 2026
This study systematically investigates the genesis, migration, accumulation, and distribution patterns of natural gas and CO2 in the Changling Fault Depression of the Songliao Basin through an interdisciplinary...
In-situ combustion of heavy oil within a vuggy carbonate reservoir: Part II—Mechanism of permeability inversion and rock fabric transformation
June 2026
Predicting the performance of in-situ combustion (ISC) in carbonate reservoirs is notoriously challenging. This study reveals a paradoxical permeability inversion phenomenon: initially high-permeability...
Dynamic evolution of stress interference during the multi-layer exploitation of sand-shale interacted continental shale oil reservoirs
June 2026
Accurate prediction of stress evolution induced by production pressure depletion after hydraulic fracturing is essential for efficient development of stacked continental shale reservoirs. This study...
Artificial intelligence in petroleum and natural gas prospect evaluation and prediction
June 2026
Artificial intelligence has shown great performance and considerable potential in petroleum and natural gas prospect evaluation and prediction (PPEP). Multiple machine learning (ML) and deep learning...
A data augmentation method for lacustrine shale lithofacies classification based on a conditional diffusion probabilistic model: A case study from the Dongying Depression, Bohai Bay Basin, China
June 2026
Accurate identification of lithofacies is critical for shale hydrocarbon exploration and development. Although machine learning (ML) is one of the most effective approaches for predicting shale lithofacies,...
Multiparameter Bayesian full-waveform inversion with uncertainty quantification based on regularized inverse scattering theory for elastic transversely isotropic media
June 2026
Complex subsurface structures exhibit significant anisotropic characteristics, making multi-parameter imaging techniques important for achieving a more comprehensive geological interpretation. Full-waveform...
TOC
June 2026
Conquering high-temperature acidic corrosion with a molecular anvil: A robust pyridinium quaternary ammonium salt
June 2026
Achieving robust corrosion protection under extreme acidic and high-temperature conditions remains a formidable challenge in the oil and gas industry. In this work, we report a molecularly engineered...
Beyond spatial averaging: Modeling DAS seismic responses with optical system effects
June 2026
Distributed acoustic sensing (DAS) utilizes standard optical fibers as continuous distributed seismic sensors, enabling the acquisition of subsurface vibration information with high spatial sampling...
Adaptive structure-guided impedance inversion using implicit sparse constraint
June 2026
Structure-guided inversion has been increasingly adopted to enhance structural features and improve the interpretability of seismic impedance imaging. However, the limited bandwidth of seismic wavelets...
Preparation and performance evaluation of phase change material microcapsules for smart regulation of drilling fluid temperature for marine gas hydrate reservoirs
June 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...
Characteristics of fracturing fluid water blocking damage in tight gas reservoirs based on two-dimensional NMR T1–T2
June 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...
Insights of abrasive water jet slotting mechanisms in hard rock using CFD-DEM simulation
June 2026
Abrasive water jet (AWJ) slotting technology shows great potential for stimulating oil and gas reservoirs, particularly in hard rock formations. Understanding the transport mechanisms of water and abrasives...
High-fidelity numerical simulation of ocean-bottom node 4C seismic data using the acoustic-elastic coupling equation
June 2026
The complex wavefields in ocean-bottom node (OBN) four-component (4C) seismic data, particularly interface waves like Scholte waves, pose significant challenges for processing and inversion. A key issue...
Molecular dynamics simulation for effect of stress on quartz dissolution: Implication on the development of high-quality reservoirs in foreland basins
June 2026
The dissolution of unstable minerals such as feldspar and carbonate is currently recognized as the primary cause of the dissolution pores in most clastic rock reservoirs globally. However, research...
Reinterpretation of volcanic and hydrothermal influence on organic matter accumulation and paleo-depositional environment in a lacustrine shale system: Insight from interpretable machine learning model
June 2026
The significant resource potential of lacustrine shale oil has spurred interest in understanding organic matter enrichment mechanisms. However, conventional analytical methods are often constrained...
Dynamic retention and geochemical interactions during zwitterionic surfactant–ATBS polymer flooding in carbonates under harsh conditions
Available online 26 June 2026
Surfactant–polymer (SP) flooding in carbonate reservoirs under high-temperature, high-salinity (HTHS) conditions is governed not only by interfacial and rheological properties but also by carbonate...
An improved multi-task learning framework for coupled prediction of pressure and temperature during well drilling
Available online 25 June 2026
In recent years, petroleum exploration has increasingly shifted toward deepwater and ultra-deep formations, with the most critical technical challenges being the narrow safe drilling window. Accurate...
Numerical simulation of fracture height growth in deep shale reservoirs based on CDEM-THM
Available online 24 June 2026
The influence of thermal stress during hydraulic fracturing in deep shale reservoirs cannot be neglected, and the mechanism of fracture height propagation under the combined effects of thermal stress...
Fully anisotropic undrained effects on short-term wellbore stability of arbitrarily inclined wells in transversely isotropic formations
Available online 24 June 2026
The immediate undrained poroelastic response after drilling is critical for short-term wellbore stability in low-permeability formations. Despite its significance, existing analytical undrained wellbore...
Conversion-aware elastic RTM using Poisson projection, elastic-parameter-gradient gates, and dual back-propagation strategy
Available online 23 June 2026
Elastic reverse time migration (ERTM) provides a powerful framework for high-fidelity imaging of multicomponent seismic data. Its performance, however, is limited by the intrinsic coupling of P- and...
Adaptive Subtraction and Suppression of Seismic Multiples Based on FISTA-Net with Local Normalized Cross-correlation Loss Function
Available online 23 June 2026
Adaptive subtraction plays a crucial role in seismic multiple suppression, as modeled multiples often deviate from true multiples in amplitude, phase, and arrival time. Existing U-Net method relies...
