Electrical resistivity tomography visualization of core-scale evolution to reveal the impact of lithologic heterogeneity on gas hydrate formation in marine sediments
November 2026
Natural gas hydrate represents a significant clean energy resource, whose formation and distribution are critically controlled by sediment heterogeneity. While electrical resistivity tomography (ERT)...
Machine learning for gas kick detection in deepwater drilling: A review with multi-source data fusion
November 2026
Gas kick early warning in deepwater drilling is challenged by weak precursors and multi-source noise, which can delay detection and increase false alarms under conventional single-signal thresholds....
Drilling knowledge constrained deep learning for autonomous drilling optimization in deep geological formations
November 2026
The development of deep and ultra-deep underground resources is often constrained by high drilling costs and low operational efficiency, among which the rate of penetration (ROP) serving as a critical...
Fracture propagation mechanisms in shale across structural positions of complex tectonic zones under supercritical CO2 fracturing
November 2026
Supercritical CO2 (SC-CO2) fracturing has significant potential for shale gas stimulation and CO2 geological sequestration. However, the differentiated fracture propagation mechanisms of shale from...
Numerical investigation on T1–T2–based wettability in shale oil
November 2026
Wettability analysis in shale reservoirs is crucial for evaluating reserve assessment. Nuclear Magnetic Resonance (NMR) is a widely adopted non–destructive technique for characterizing wettability in...
Interfacial adhesive behaviors between clathrate hydrates and mineral microparticles: AFM measurements and capillary bridge modeling
November 2026
The industrial development of natural gas hydrate, a promising clean energy resource, is hindered by key technical challenges such as formation degradation, reservoir instability, and sand production....
TOC
November 2026
Microseismic signal denoising via a dynamically guided two-stage framework
November 2026
Microseismic signal denoising is a crucial step in microseismic monitoring because it directly affects the reliability of subsequent processing and interpretation. To address the low amplitude feature...
Microscale occurrence and adsorption behavior of pore water in shale oil reservoirs: Insights from water vapor adsorption at varying relative humidities
November 2026
The water saturation in shale reservoirs plays a key role in controlling shale oil accumulation and production. The microscale distribution of pore water constrains both the content and spatial occurrence...
Erosion characteristics and energy economy of low-pressure abrasive gas jet across distinct lithologies
November 2026
The exploitation of deep-earth energy resources demands rock excavation technologies that are efficient, compact, and reservoir-friendly. While high-pressure abrasive water jets (HPAWJ) are effective,...
Rheological behavior and disulfide bond-mediated self-degradation of dual-network hydrophobically associated polyacrylamide fracturing fluid
November 2026
To improve the rheological properties of polyacrylamide-based fracturing fluids, a common approach is to increase the amount of copolymer; however, this inevitably leads to greater damage to reservoirs....
A fluidic hammer as a high-fidelity seismic-while-drilling source: A direct, quantitative comparison with conventional drill bits
November 2026
We performed a direct comparative analysis of the seismic wavefields radiated from three distinct drilling mechanisms under controlled laboratory conditions: percussion-rotary drilling with a fluidic...
Study on multiscale effects and mechanisms of induced organic precipitation on reservoir wettability during CO2 huff-n-puff in shale oil reservoirs
November 2026
During CO2 injection in shale oil, CO2–crude oil interactions promote the precipitation of heavy organic fractions, which in turn alters the reservoir wettability. In this work, CO2 huff-n-puff tests...
A pH-triggered delayed sodium metasilicate gel system for deep conformance control in heterogeneous reservoirs
November 2026
Conventional sodium silicate gels commonly undergo rapid and poorly controlled gelation upon direct acidification, resulting in narrow operational windows and limited deep-placement capability. To overcome...
Fault intelligent identification of seismic data using two-stage method based on coherent attribute
November 2026
Faults play a crucial role in the storage and migration of oil and gas, and accurate identification of fault structures is essential for reliable subsurface interpretation and efficient resource development....
Hydrocarbon evaporation behavior in medium-to high-maturity shale: Insights from pressure-retained core samples
November 2026
Focusing on the medium-to high-maturity shale oil play of the Qingshankou Formation in the Gulong Sag (Songliao Basin, NW China), pressure-retained, full-closure, and conventional core samples (including...
Seismic lithofacies classification and fault detection using self-organizing maps and convolutional neural networks in the Penobscot field, Scotian Shelf, Eastern Canada
November 2026
Accurate characterization of lithofacies and fault networks is critical for delineating reservoir architecture, heterogeneity, and compartmentalization in structurally complex hydrocarbon systems. Conventional...
Dual effects and dominant mechanism of CO2 contamination in water-based drilling fluids: The dominant role of pH and the synergistic effect of CO32−/HCO3−
Available online 4 November 2026
CO2 contamination is one of the core problems faced by water-based drilling fluids. Traditional studies mostly focused on the effects of CO32−/HCO3− generated from CO2 dissolution in water on the fluid...
Evolution of sealing failure at the casing-cement sheath interface under cyclic loading based on DFOS technology and numerical simulation
Available online 4 November 2026
During underground gas storage construction and multi-stage hydraulic fracturing operations, wellbores experience cyclic loading during injection-production or stimulation processes. This cyclic loading...
Fluid flow mechanisms and characterization methods in coupled pore–fracture systems of complex oil and gas reservoirs
Available online 3 November 2026
This perspective analyzes the coupled mechanisms of matrix-pore storage, fracture conductivity, and cross-scale exchange in pore–fracture systems of complex oil and gas reservoirs, including carbonates,...
Methane emissions from China’s natural gas supply chains: pathway-based accounting, structural drivers, and projections to 2060
Available online 3 November 2026
Methane emissions represent a key challenge to the sustainable development of natural gas systems, as excessive leakage can undermine both the climate benefits and operational efficiency of gas as a...
Bidirectional mass-transfer intensification via ester/ether cross-medium surfactant system for reducing CO2–crude oil miscibility pressure
Available online 2 November 2026
Reducing the minimum miscibility pressure (MMP) is essential for enabling miscible CO2 flooding in reservoirs constrained by fracture pressure and injectivity limitations. Existing additive strategies...
