The impact of grid refinement, foam model, and peaceman model on gas and liquid injectivities during SAG foam EOR: An FFT benchmarking study
September 2026
Surfactant-Alternating-Gas (SAG) utilizes foam to reduce gas mobility and improve reservoir sweep efficiency in gas-injection enhanced oil recovery and carbon capture and storage. Although SAG is known...
Design and analysis of a micro hydraulic reamer-while-drilling tool
September 2026
Casing window sidetracking is a key technique for tapping remaining oil in small-scale enriched zones, such as minor anticlines and thin interbeds. While reaming-while-drilling (RWD) technology can...
A new prediction model of bottomhole weight on bit in offshore extended-reach drilling based on the integration of intelligent algorithms and the physical models of rate of penetration
September 2026
Offshore extended-reach drilling is widely employed for the efficient development of deepwater hydrocarbon fields. However, the complex subsea formation environment and downhole frictional losses lead...
Integrated evaluation of shale source rock potential in the Pabdeh Formation, Shadegan oil field, SW Iran
Available online 30 September 2026
This study evaluates the hydrocarbon generation potential of the Pabdeh Formation's shales in the Shadegan oil field, southern Iran, a region recognized for its rich organic content. Samples from wells...
Engineered CO2-EGR and CCUS in Gas Reservoirs: Review of Subsurface Mechanisms, Design, Reservoir Integrity, and Injection Management
Available online 29 September 2026
This review presents an engineering framework for CO2-based enhanced gas recovery (CO2-EGR) coupled with carbon capture, utilization, and storage (CCUS) in gas and gas-condensate reservoirs. We synthesize...
An Interpretable Hybrid Framework Integrating Signal Decomposition and Machine Learning for Rate of Penetration Prediction
Available online 24 September 2026
Accurate prediction of the rate of penetration (ROP) is essential for efficient drilling operations, as it enables optimized parameter control, reduces non-productive time (NPT), and lowers well construction...
A dynamic coupled wellbore-reservoir model to analyze pressure buildup data dominated by three-phase segregation in a horizontal oil well
Available online 12 September 2026
Phase segregation of multiphase flows in the wellbore complicates the analysis of pressure buildup tests, potentially leading to significant water production. This study investigates a thin oil reservoir...
Shale petrological and reservoir characteristics of the Upper Permian Linxi Formation in the northern Songliao Basin
Available online 11 September 2026
The Upper Paleozoic shale represents a critical potential target for unconventional oil and gas exploration in the Songliao Basin. However, existing research has predominantly focused on the peripheral...
Multi-objective optimization of 3D complex horizontal well trajectories based on MOPSO and entropy weight-TOPSIS method
Available online 3 September 2026
Horizontal well technology serves as the core means for the development of oil and gas reservoirs, and the optimization of the well trajectory is of great significance for improving the development...
Artificial intelligence techniques in oil and gas production technology: A review of applications, opportunities, and challenges
Available online 3 September 2026
Artificial intelligence (AI) has emerged as a transformative force in production technology (PT) within the oil and gas industry, driving advancements in prediction, optimization, and real-time decision-making....
Caprock Integrity in CO2 Storage: A Comprehensive Review of Subsurface Controls and Modelling Approaches
Available online 3 September 2026
Caprock integrity is fundamental to the safe and long-term geological storage of carbon dioxide (CO2), yet its assessment currently spans disparate geological, geomechanical, geochemical, and petrophysical...
Rapid Deep Learning Forecasts of Carbon Dioxide Plume Extent in Saline Aquifers
Available online 27 August 2026
Reliable prediction of CO2 plume extent evolution is essential for ensuring safe and effective geological carbon storage. Accurate plume forecasts help prevent leakage, reduce environmental risks, and...
Performance evaluation of MnCuAl-layered triple hydroxide as an H2S scavenger in water-based drilling fluids with preserved rheological and filtration properties
Available online 10 August 2026
The presence of hydrogen sulfide (H2S) during drilling operations poses serious health, safety, and operational hazards, necessitating effective scavenging solutions that do not compromise drilling...
Numerical Modeling of Post-CHOPS CO2 Cyclic Injection with Insights from Geotechnical Centrifuge Experiments
Available online 10 August 2026
Cold Heavy Oil Production with Sand (CHOPS) typically leaves a significant portion (85–95%) of oil unrecovered due to rapid pressure depletion, sand production, and the formation of wormhole networks...
Advancing gas flaring mitigation: A comprehensive review of progress and future directions
Available online 7 August 2026
Gas flaring, a persistent environmental challenge within the petroleum industry, significantly contributes to global greenhouse gas emissions and represents a substantial loss of energy and economic...
Evaluating fly ash as a high-salinity scavenger to enhance water-based mud performance in high-TDS brine contaminated drilling operations: A case study from the Williston Basin
Available online 7 August 2026
Drilling operations in the oil-rich Bakken Formation of the Williston Basin, North Dakota, face significant challenges due to contamination of drilling fluids (DFs) with high total dissolved solids...
Advancing low-salinity waterflooding for improved oil recovery: Mechanisms, machine learning, and future directions
Available online 7 August 2026
The efficacy of low-salinity waterflooding for improving hydrocarbon recovery has garnered significant attention, owing to its greater efficiency in improving oil recovery compared to conventional high-salinity...
Lithofacies Modeling and Depositional Environment of the Carbonate-Clastic rocks: A Case Study from the Asmari Formation, Southeastern Iraq
Available online 6 August 2026
The mixed Oligocene–Miocene succession of the Asmari formation constitutes an important clastic-carbonate petroleum reservoir in southeastern Iraq, where a detailed understanding of depositional settings...
Comprehensive treatment and optimization of lake water and produced water for low salinity water flooding in enhanced oil recovery
Available online 6 August 2026
This investigation evaluates the suitability of treated lake water (LW) for injection and as a diluent for produced water (PW) in low-salinity enhanced oil recovery (EOR), revealing through comprehensive...
Water sensitivity damage mechanisms in tight sandstone gas reservoirs revealed by NMR and in-situ micro-CT
Available online 31 July 2026
Water sensitivity damage, often induced during hydraulic fracturing, poses a significant threat to the productivity of tight sandstone reservoirs by reducing permeability. While commonly attributed...
Coupled thermo-mechanical analysis of bismuth plug deployment in wellbore
Available online 28 July 2026
Plug and abandonment (P&A) operations are a critical step in ensuring long-term well integrity and mitigating environmental risks. Bismuth-based alloys have emerged as promising alternatives to cement...
Prediction of the apparent viscosity of CO2-foam using machine-learning techniques: Application of black-box and white-box algorithms
Available online 24 July 2026
Carbon dioxide foam (CO2 foam) injection is of great importance in the oil and gas industry, including enhanced oil recovery (EOR), drilling operations, etc. In addition, CO2 foam injection is an efficient...
Formation damage to oil reservoir caused by СО2 injection for enhanced oil recovery
Available online 21 July 2026
Carbon dioxide (CO2) injection for enhanced oil recovery (EOR) and geological storage is crucial for increasing hydrocarbon production while reducing greenhouse gas emissions. However, its implementation...
Digital rock analysis of pore-scale controls on permeability anisotropy in an arctic shelf gas-condensate reservoir
Available online 17 July 2026
The mechanistic origin of permeability anisotropy in weakly consolidated reservoirs with highly connected and heterogeneous structures are still insufficiently understood. This study describes a stepwise...
Ethomeen-mediated CO2 utilization in produced water for enhanced mineralization and oil recovery
Available online 10 July 2026
This study introduces a novel integrated strategy that couples CO2 mineralization, surfactant-assisted precipitation, and smart water flooding to simultaneously advance carbon management and enhanced...
