Numerical study on formation blockage and back-pumping during geothermal water reinjection in weakly consolidated heterogeneous reservoirs using a novel mechanism model
August 2026
For the utilization of low-medium temperature geothermal water, the well injection capacity for tail water disposal is often reduced due to the migration of self-generated particles and the invasion...
Microscopic heterogeneity characteristics and movable oil characterization of ultra-deep shale oil in the Mahu Sag
August 2026
The shale oil in the Fengcheng Formation of the Mahu Sag has become an extremely critical target for large-scale reserve growth in the Junggar Basin. Characterized by great burial depth, complex geology,...
Gas condensate recovery in carbonate rocks through wettability alteration: Characterization and optimization by response surface methodology (RSM)
August 2026
Liquid blockage around the wellbore region can significantly decrease the gas and condensate extraction volume from a condensate reservoir. In these kinds of reservoirs, the rock surfaces are commonly...
Mechanisms and patterns of crude oil mobilization in microscopic pores under gravity-assisted CO2 miscible displacement: A case study of tight conglomerate reservoirs in the Mahu Sag, Xinjiang
August 2026
To address the unclear understanding of the microscopic oil displacement mechanisms, patterns of oil mobilization in pore throats, and optimal displacement methods for gravity-assisted CO2 miscible...
Reservoir characterization and pore system heterogeneity analysis of the Eocene Mangahewa Formation: Insights from Kapuni Field, Taranaki Basin
August 2026
Understanding the controls of depositional and diagenetic processes on pore system evolution is essential for predicting fluid flow behavior in sedimentary reservoirs. The sandstones of the Mangahewa...
Mechanistic understanding and mathematical advancements of spontaneous imbibition and fluid saturation measurement: A comprehensive review
August 2026
Accurate prediction of the imbibition of fluid in pores would help to properly estimate the oil/gas recovery. This study is focused on imbibition estimation, considering the influences of various rock...
Torsional vibrations rejection in drilling systems: A combined observer-higher-order sliding mode control approach
August 2026
One of the fundamental challenges in drilling systems is the phenomenon of torsional vibrations that can cause system destruction. This paper presents a new control approach to reject stick-slip vibrations...
Impact of inlet velocity on non-Darcian-Forchheimer oil flow in porous media: A numerical approach
August 2026
Predicting fluid behaviour accurately is crucial for optimising extraction methods in petroleum engineering due to the considerable hurdles posed by the non-Darcian flow of oil through porous surfaces....
A review on functional group chemistry and structure-to-function design for mechanism-centric nanoparticle EOR
August 2026
A significant challenge in advancing nanoparticle-based enhanced oil recovery (EOR) is the gap between synthesis and application. Many reviews catalog surface modification techniques but fail to explain...
Generation and development of micro-annulus under complex load environment conditions in well deviated sections and barrier establishment method
Available online 16 July 2026
The cyclic loading and unloading of casing internal pressure is an important influencing factor causing the generation and development of micro-annulus at the wellbore cementation interface.The well...
An Experimental and Time Series Artificial Intelligence modeling of Shale swelling in Water-Based Mud systems
Available online 2 July 2026
Drilling in shale formation is a challenging and technologically advanced process, primarily because of the diffusion of aqueous species into the nano-spacing. The interaction between water and shale...
Interfacial tension modeling in CO2-brine systems using machine learning for enhanced CO2 storage
June 2026
This study introduces an advanced machine learning (ML) framework to predict interfacial tension (IFT) in CO2-brine systems, a key factor in optimizing carbon capture and storage (CCS) processes. Accurate...
Fracture cross-layer propagation patterns and stimulation effectiveness evaluation in thin interbedded reservoir models
June 2026
Offshore thin interbedded reservoirs are characterized by frequent alternation of sandstone and mudstone, strong vertical heterogeneity, and complex fracture cross-layer propagation mechanisms, which...
Synergistic effects of 2-ethoxyethanol and dissolved CO2 on interfacial tension reduction, wettability alteration, and oil swelling through carbonated water flooding in carbonate-sandstone oil reservoirs
June 2026
This paper investigates how the efficiency of the chemical carbonated water EOR technique is optimized using the nonionic surfactant 2-ethoxyethanol in CO2-rich water solutions. Tests were performed...
Hydrocarbon–helium coupled accumulation processes and formation mechanisms of helium-rich gas fields in the southwestern Ordos basin
June 2026
Helium is a critical strategic resource, with industrial helium primarily derived from helium-rich natural gas fields. Numerous large-scale natural gas fields with variable helium concentrations have...
