Cenozoic morphological evolution of the Tanintharyi Shelf carbonate platform, Andaman Sea Basin: Implications for hydrocarbon reservoir potential
Available online 27 March 2026
The Tanintharyi Shelf in the Andaman Sea Basin hosts a significant yet largely underexplored Cenozoic carbonate platform with substantial hydrocarbon potential. This study utilizes an integrated analysis...
Co-pyrolysis of oil shale and bituminous coal in a fluidized bed: Properties and distribution of pyrolysates, and reaction mechanisms
Available online 27 March 2026
The co-pyrolysis of mixed samples of Longkou oil shale (OS) and bituminous coal (BC), using the ash of the mixture as the heat carrier, was investigated in a fluidized bed. The influencing factors were...
Insight into the role of masking agents in inhibiting water-based mud contamination of oil well cement slurry
Available online 27 March 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,...
Molecular dynamics study on the diffusion and dissolution of heavy oil in supercritical CO2 under high-temperature and high-pressure conditions
Available online 27 March 2026
CO2-assisted steam thermal recovery is an efficient CO2-enhanced oil recovery (CO2-EOR) technique, increases heavy oil production while storing CO2. To elucidate heavy oil and supercritical CO2 interactions...
Geopolitical turbulence in the Middle East: Reshaping global energy landscape?
Available online 27 March 2026
Iran’s position in the Gulf energy system makes the recent military confrontation involving the United States, Israel, and Iran highly consequential for global energy markets. This commentary examines...
Investigation of hydrocyclone coupled with particles for enhancing oil–water separation
Available online 26 March 2026
Efficient oil-water separation is essential for treating produced fluids in petroleum engineering. This study investigates performance enhancement in hydrocyclones coupled with particles through theoretical...
Physics-Informed machine learning for sustained casing pressure diagnostics and root cause analysis for well integrity
Available online 26 March 2026
Sustained casing pressure (SCP) is a primary indicator of well integrity degradation, arising from compromised barriers such as cement, casing, tubing/packer components, or wellhead seals. Traditional...
MSA-DETR: Multi-scale attention enhanced DETR for object detection in oilfield surveillance
Available online 25 March 2026
In modern petroleum engineering, ensuring operational safety at drilling sites is of critical importance. Visual object detection plays a key role in intelligent safety monitoring systems by enabling...
Study on the cutting characteristics of different types of abrasive grains on workover bits in the high-temperature environment of the deep wellbore
Available online 25 March 2026
At present, drilling bits for workover under high-temperature conditions are facing technical bottlenecks such as low work efficiency and rapid wear, especially their working characteristics in the...
Synergistic effects of carbonated water flooding coupled with surfactant for EOR and CO2 storage: Pore-scale mechanisms and influencing factors analysis
Available online 25 March 2026
Active carbonated water (ACW) flooding combines the benefits of carbonated water (CW) and surfactant flooding, simultaneously enhancing oil recovery and facilitating CO2 storage. Nevertheless, the enhanced...
Thickening characteristics and conformance control mechanism of CO2-responsive fluid during CO2 flooding
Available online 23 March 2026
CO2-responsive fluid (CRF) is a surfactant solution characterized by low viscosity during the injection stage, and by a viscosity increase after reaction with CO2, which achieves mitigation of CO2 channeling....
Depth-domain inversion with angle-domain PSF for quantitative reservoir characterization: A case study from the Northern Viking Graben, North Sea
Available online 23 March 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...
Refinery optimization in OPEC member states: An integrated inverse DEA approach and economic viability analysis
Available online 21 March 2026
Refinery optimization is critical for ensuring energy security and economic resilience in OPEC member states, where persistent inefficiencies and heavy reliance on fuel imports remain major challenges....
Zwitterionic-hydrophobic associating polymer for enhanced rheology and fluid-loss control in high-temperature, high-salinity water-based drilling fluids
Available online 21 March 2026
In deep oil and gas drilling, high-temperature and high-salinity conditions have posed severe challenges to water-based drilling fluids. These harsh environments can impair the performance of drilling...
Semi-supervised-learning-based AVO-preserved pre-stack seismic data resolution enhancement
Available online 20 March 2026
High-resolution pre-stack seismic data are essential for exploring complex and thin-layered reservoirs, and can enhance the reliability of resource evaluation. However, traditional pre-stack seismic...
3-D contour inversion of pipeline defects based on direction-aware multi-axis fusion and depth-gradient joint decoding
Available online 20 March 2026
Reconstructing defect contours by inspecting internal magnetic flux leakage (MFL) in oil and gas pipelines provides significant data support for assessing pipeline integrity and represents a crucial...
Mechanical characteristics of deep to ultra-deep sandstones: A comparison study based on rock mechanical and hydraulic fracturing experiments
Available online 20 March 2026
Understanding the evolution of sandstone mechanical behavior under high pressure and high temperature (HPHT) is crucial for the efficient development of ultra-deep tight reservoirs. In this study, triaxial...
Closed-loop Porosity Inversion Method with Well-Seismic Joint Constraints Based on Wavelet Transform
Available online 20 March 2026
Porosity is one of the key physical properties of reservoir rocks, directly influencing their capacity to store and transmit oil and gas. Traditional porosity inversion methods are often constrained...
Occurrence mechanism of shale oil in laminated shale reservoirs: A review
Available online 19 March 2026
Shale oil is an important unconventional resource. In-depth exploration of the shale oil occurrence mechanism is beneficial for the selection of sweet spots and the innovation of production technologies....
Application of 2D full-waveform inversion for characterizing potential gas reservoirs
Available online 19 March 2026
The application of full waveform inversion (FWI) on field data is currently a widely concerned challenge in seismic exploration. FWI has been proven on synthetic data to have the ability to obtain high-accuracy...
Fluid flow visualization and resistivity variations during gas-water displacement in carbonate rock: Implications for reservoir evaluation
Available online 19 March 2026
Carbonate reservoirs exhibit strong pore structure heterogeneity, leading to complex electrical properties and posing challenges for fluid saturation evaluation through well logging. To clarify the...
Heterogeneity in the molecular composition of effluent organic matter from petrochemical wastewater treatment plants in China
Available online 18 March 2026
The proliferation of petrochemical plants close to natural water bodies has resulted in emission of numerous organic pollutants into aquatic environments. However, the molecular composition of petrochemical...
Application of the AutoMix hybrid model for in-situ stress prediction in shale gas reservoirs
Available online 18 March 2026
Accurate in-situ stress prediction is critical to optimizing hydraulic fracturing design and enhancing reservoir stimulation in deep shale gas development. However, traditional methods often struggle...
Impacts of temperature and pressure on light hydrocarbon parameters during gas washing: Results from simulation experiments
Available online 18 March 2026
As a secondary alteration process in oil reservoirs and a critical mechanism for light oil and condensate formation, gas washing is predominantly governed by temperature and pressure. However, the dynamic...
Boosted organic carbon accumulation in the Late Cretaceous Songliao Basin during marine incursion events
Available online 18 March 2026
Although the Late Cretaceous marine incursion events (MI) significantly boosted organic carbon (OC) accumulation in the Songliao Basin, their net effects and accumulation mechanisms have long been debated....