OFC
June 2026
Miscibility enhancing agents for improving oil recovery of CO2 flooding in low-permeability reservoirs: A study based on core displacement and nuclear magnetic resonance
June 2026
CO2 miscible flooding is a key method to improve oil recovery. However, under most petroleum reservoir conditions, CO2 cannot achieve miscibility with crude oil. Therefore, reducing the minimum miscible...
Phase-based polarized direct envelope inversion with total variation regularization for simultaneous source seismic data: Application to SEG 2014 Chevron blind test dataset
June 2026
In subsalt hydrocarbon exploration, the strong velocity contrast associated with salt structures poses significant challenges to conventional full waveform inversion (FWI) method. While direct envelope...
Mechanisms of CO2 nanobubble-enhanced oil recovery: Interfacial regulation and flow behavior control in porous media
June 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...
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...
A critical review of analytical oil flow rate models for vapor extraction and its non-condensable gas-based hybrids
Available online 30 June 2026
Analytical models are the preliminary reservoir engineering processes performance prediction tools that are quick and less costly compared with experiments and simulations when sufficiently modelled...
Numerical investigation of the mechanisms of fluid pressure drop induced by rod centralizer in progressing cavity pump wellbore annulus
Available online 30 June 2026
To elucidate the pressure drop characteristics and underlying mechanisms induced by a rod centralizer in a progressing cavity pump (PCP) wellbore annulus, a CFD-based multiphase flow numerical model...
