Experimental study of the flow characteristics of surfactant-assisted aerosols in low permeability porous media
Available online 19 January 2026
Gas channeling in formations is a primary factor affecting the effectiveness of gas flooding and CO2 geo-storage. Current dominant methods for controlling gas channeling include water-alternating-gas...
Research and application of thin sandstone identification technique based on post-stack seismic data: A case study of Ecuador's M reservoir
Available online 18 January 2026
The M sandstone member within the Cretaceous Napo Formation is a critical hydrocarbon reservoir in the Oriente Basin's foredeep belt. However, its characterization is severely challenged by its thin-bed...
Lateral vibration and vibration control methods for ultra-deep well drill strings based on Cosserat geometrically exact beam theory
Available online 18 January 2026
In ultra-deep well operations, severe lateral vibration of drill string is a major factor in tool failure and decreased drilling efficiency. To investigate the vibration mechanisms and identify effective...
Performance of multifunctional viscous slickwater for enhanced oil recovery in tight oil reservoirs
Available online 17 January 2026
Economically recovering oil from tight/shale reservoirs requires extensively developed propped fracture networks and rock matrices with sufficient oil mobility, which imposes higher demands on the fracturing...
Effect of cashew nutshell liquid-modified EVAL on flow behavior and crystallization of waxy systems
Available online 17 January 2026
Light crude oils are being progressively depleted as the dominant primary energy source, leading to increased attention on the extraction and utilization of highly waxy crude oils. To address the poor...
Diagnostic potential of light hydrocarbons in deep marine natural gas: Insights from Tarim Basin
Available online 16 January 2026
Light hydrocarbons (LHs) retain comprehensive information about the genesis of natural gas. In this study, the gas composition, carbon isotopes, and LHs in deep marine natural gases from the Tarim Basin...
Experimental study on the droplet breakup process in contracted pore throat microchannels
Available online 13 January 2026
This paper mainly studies the droplet breaking behavior in contracted pore throat microchannels. The droplet breaking process consists of four stages: extrusion, stretching, sub-droplet growth and fracture....
The reactivation of pre-existing faults and their controlling effects on the formation of rift basin: A Case from the Enping-17 Sag in the Pearl River Mouth Basin, South China Sea
Available online 13 January 2026
The reactivation of pre-existing faults exerts a profound influence on the formation of rift basins and the deformation behaviors within their interiors, however, the specific modes of activation and...
An improved pulsed neutron method for gas reservoirs identification in the complex buried hill formation of the Bohai Sea
Available online 13 January 2026
Recent discoveries revealing the substantial production potential of buried hill reservoirs have spurred significant research interest in their exploration. Pulse neutron logging offers significant...
Structural-state integrated modeling of multi-mechanism formation damage during drilling–completion
Available online 12 January 2026
To address the modeling fragmentation and predictive deviation caused by the conventional “single-mechanism, weakly coupled, additive response” approach in formation damage research, this study proposes...
Evolution process and controlling factors of gas content in marine-continental transitional shales: Insights from numerical modeling
Available online 12 January 2026
Marine-Continental Transitional shale (MCTS) gas holds excellent gas-generating hydrocarbon basis and exploration potential. Conducting quantitative analysis on the evolution of shale gas content and...
Insights of abrasive water jet slotting mechanisms in hard rock using CFD-DEM simulation
Available online 10 January 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...
Semi-supervised learning for AVO inversion with bidirectional spatial feature constraints
Available online 9 January 2026
Prestack amplitude variation with offset (AVO) inversion using one-dimensional convolutional neural networks often lacks lateral continuity. While two-dimensional methods improve this, they are limited...
Gelation and reservoir conformance control performance of in situ crosslinked polymer gels prepared with different crosslinkers
Available online 9 January 2026
In situ crosslinked polymer gels (ISCPGs) are widely applied in petroleum reservoirs for conformance control and water shutoff to improve oil recovery. However, the differences in gelation behavior...
Investigation of fracture pressure and EOR mechanisms during fracturing flooding in low-permeability sandstone using CT and NMR
Available online 9 January 2026
Fracturing flooding provides an effective approach to overcoming injection difficulties and enhancing oil recovery in high-water-cut, low-permeability sandstone reservoirs. Injecting fracturing-flooding...
A high-temperature and high-strength polymer gel for plugging in fractured formations
Available online 7 January 2026
Lost circulation, the significant penetration of drilling fluid into formations during drilling, leads to excessive fluid consumption, non-productive time, and potential well control incidents. This...
Reutilization of regenerated exhaust gas from the centrifugation-filtration coupled purification system: a closed-loop process
Available online 6 January 2026
The regenerated exhaust gas was reutilized to configure a centrifugation-filtration coupled purification system (CFCPS), aiming to achieve a closed-loop gas purification process. It can be foreseen...
Hydrocarbon generation thermal simulation experiment of massive organic-rich tuff and laminar tuffaceous shale: A case study of the Chang 7 Member of the Ordos Basin
Available online 6 January 2026
The Chang 7 Member of the Yanchang Formation in the Ordos Basin consists predominantly of airfall and water-borne tuff along with tuffaceous shale, which exhibit considerable hydrocarbon potential,...
A novel application of a stepwise extraction protocol: resolving the challenge of biomarker detection in high-maturity shale systems
Available online 5 January 2026
Biomarkers in source rocks are crucial in uncovering biological source and depositional environment. However, the detection of critical biomarkers such as steranes and terpanes in high-maturity source...
Oxidative cracking performance of low maturity shales at different O2 concentrations
Available online 3 January 2026
Conventional in-situ conversion technologies including electrical heating or injection of hot fluid face development challenges. Low heat transfer efficiency and limited pore expansion restrict its...
Potential application of hydrophobically modified Welan gum as a novel thermo-salt tolerant EOR agent in high-temperature and high-salinity reservoirs
Available online 2 January 2026
Conventional polymeric systems face significant challenges in maintaining performance under high-temperature, high-salinity reservoir conditions due to limited thermal and saline stability. To address...
LLMs-guided parameters prediction of tight sandstone reservoirs
December 2025
Accurate prediction of reservoir parameters is essential for reservoir evaluation. Recent machine learning methods have spurred significant advancements in reservoir prediction; however, limited well...
Ag-doped ZnO nanoparticles synthesized by Bacillus subtilis induce ROS damage and apoptotic activities against sulfate-reducing bacteria cells in oilfields
December 2025
Green-synthesized nanomaterials are anticipated to be extensively applied to inhibit sulfate-reducing bacteria (SRB) in oilfields. Using Bacillus subtilis (B. subtilis) suspension as the raw material...
Preparation and performance evaluation of a sand inhibiting and water control agent based on supramolecular interactions
December 2025
To address two key challenges (sand production and high water cut) in the development of loose sandstone reservoirs, a supramolecular sand inhibiting and water control agent, PDKM, was prepared using...
Optimal fit clearance of control valve considering energy consumption based on loosely coupled fluid-solid interaction
December 2025
The wireless intelligent water distributor is an emerging technology increasingly applied in oilfields to enhance oil recovery. Although the system has many advantages, the high energy consumption of...