Dynamic monitoring and effectiveness evaluation of mid-deep coalbed methane hydraulic fracturing via the wide-field electromagnetic method
December 2026
To address the limited understanding of hydraulic fracture propagation and the challenges in quantitatively evaluating stimulation performance in heterogeneous mid-deep coalbed methane (CBM) reservoirs,...
Synergistic mechanisms for improving steam flooding effects during thermal-chemical hybrid fluid injection in heavy oil reservoirs
December 2026
Heavy oil recovery via steam flooding faces multiple challenges such as steam breakthrough, high water cut, and low oil production rate. This study investigates the synergistic effects of N2 foam +...
Dynamic evolution of thermal conductivity of crude oil and formation water under coupled temperature and pressure conditions: A case study of the Chang 7 Member in the Yanchang Formation, Ordos Basin, China
December 2026
Formation fluid significantly influences the thermal conductivity distribution of rocks under in-situ conversion conditions. Current thermal conductivity measurements are primarily conducted on rocks,...
Prospects and exploration directions of deep coalbed methane resources in China
December 2026
The assessment of deep coalbed methane (CBM) resource potential provides a critical scientific basis for the formulation of national energy policies and the strategic development planning of China National...
A fracture identification method for tight sandstone reservoirs based on multidimensional well-log data fusion: A case study of the Chang 6 Member of the Yanchang Formation in the Wuqi area, Ordos Basin
December 2026
The Ordos Basin is a stable cratonic basin, characterized by tight sandstone oil reservoirs of the 6th member of the Yanchang Formation (Chang 6 Member) with multi-scale fracture systems of diverse...
Characteristics of the morphology, distribution, sulfur isotopes, and genesis of pyrite in source rocks of the Upper Triassic Chang 7 Member, Ordos Basin, China
December 2026
The Ordos Basin, one of the major petroliferous basins in northern China, hosts the Chang 7 Member (also called Chang 7 Member in some literature) of the Upper Triassic Yanchang Formation as its most...
High-resolution T-R sequence architecture and sedimentary filling evolution of the Silurian Hanjiadian Formation, Sichuan Basin, southwest China
December 2026
The Middle Silurian Hanjiadian Formation is a promising exploration target for hydrocarbon resources in the Sichuan Basin. Historically, research on this formation remains limited, leading to a poor...
Prediction of microseismic energy evolution in underground gas storage based on Variational Mode Decomposition and Deep Learning
December 2026
Accurately predicting the evolution of microseismic energy is of great significance for identifying the potential operational risks and ensuring safe operation of underground gas storage (UGS) facilities....
Hybrid MSCNN-AttBiGRU neural network for time-series well performance forecast
December 2026
Precise prediction of well performance is vital for making informed project decisions and promoting efficient, cost-effective development of oil and gas fields, notably in unconventional reservoirs....
Geothermal frontiers: Scaling subsurface solutions for urban resilience and global energy security
December 2026
Geothermal energy presents a unique opportunity to address the global energy trilemma of security, sustainability, and affordability while supporting resilient infrastructure and urban development....
Assessment of geological characteristics of the Lower Paleozoic carbonate geothermal reservoir in the Jiyang Depression and the geothermal resource potential of the Gudong buried hill
December 2026
Deep geothermal resources hold significant potential, and their large-scale development is critical for ensuring national energy security and achieving China's national “dual-carbon” strategic goals...
Prediction of gas production for shale matrix–fracture systems using deep operator network-ensembled physics-informed neural networks
December 2026
Shale gas production forecasting remains challenging because flow is governed by strong nonlinearity, matrix–fracture interaction, and regime-dependent transport behaviour, while available production...
Prediction of effective source rocks in deep-water basins via integrated geochemical, sedimentary, and seismic analyses: A case study in the Changchang Sag, Qiongdongnan Basin, South China Sea
December 2026
The Changchang Sag, located in the Qiongdongnan Basin in the South China Sea, is a particularly promising area for deep-water hydrocarbon exploration. The spatial distributions and geochemical features...
Machine-learning prediction of flow partitioning, bottom-hole pressure, and fracture-tip pressure in horizontal water injectors with a single transverse fracture
December 2026
Machine learning (ML) has advanced reservoir engineering by enabling data-driven optimization for improved injection performance and cost efficiency. This study develops three supervised ML regression...
Mechanistic constraints on hydrogen-induced pyrite reduction
December 2026
MALIK et al. (2026) investigated hydrogen-induced pyrite reduction and associated H2S generation under hydrothermal conditions relevant to underground hydrogen storage (UHS). They report measurable...
Rapid estimation of porosity and permeability from core slab images using deep learning
Available online 12 November 2026
Estimating porosity and permeability conventionally requires costly, time-consuming laboratory analysis or advanced imaging. This study evaluates deep learning for predicting these properties from routine...
Integrated geothermal resource assessment of the Biu–Kerang Volcanic Province, northern Cameroon Volcanic Line, Nigeria, using remote sensing and potential field geophysical methods
Available online 11 November 2026
The Biu–Kerang Volcanic Province, within the northern continental segment of the Cameroon Volcanic Line (CVL) in Nigeria, comprises Cenozoic volcanic centers superimposed on structurally complex crust...
Spatial Distribution of Mudclast-Conglomerate and Mudstone Bodies in Braided Fluvial Sandstones and their Influence on Effective Permeability
Available online 7 November 2026
Thin mudstone and mudclast-conglomerate lenses in braided fluvial sandstones can exert a disproportionately large control on fluid flow, relative to their volumetric proportion, by reducing effective...
Well-Log-Based Identification of Complex Reservoir Fluid States in the Late Development Stage Using FSGM-KAN
Available online 7 November 2026
Identifying complex oil–water relationships, heterogeneous water-flooding states, transition zones, and thin interbeds remains challenging in mature reservoirs. This study proposes FSGM-KAN, a well-log-based...
Hydrothermal emergence and Péclet–Rayleigh instability scaling in sedimentary geothermal systems
Available online 4 November 2026
Sedimentary geothermal systems constitute important low-to medium-enthalpy energy resources whose performance depends not only on subsurface temperature but also on the coupled interaction between thermal...
Thermal structure insights from Curie Point Depth estimation in Java Island, Indonesia using the IRLS-de-fractal method
Available online 2 November 2026
Java Island is formed above the subduction zone where the Eurasian and Indo-Australian plates interact, creating a volcanic arc rich in geothermal potential. Studying the shallow crustal thermal structure...
Natural fracture subsystem division and evaluation method: Integrating characteristics into structures
October 2026
Foreland thrust belts are frequently characterized by complex structures, where multi-phase tectonic activity produces intricate deformation features and highly heterogeneous natural fracture systems....
Micropore structure characteristics and gas-bearing properties of deep coal reservoirs: A case study of the Benxi Formation in the Daning–Jixian Block
October 2026
Micropores in deep coal reservoirs are the primary sites for the adsorption and storage of coalbed methane (CBM). Understanding these micropores, particularly characterizing their development, is therefore...
Thermal sufficiency versus hydraulic limitation: A probabilistic assessment of geothermal power feasibility in the Cambay Basin, India
October 2026
Sedimentary petroliferous basins are increasingly targeted for brownfield geothermal development due to existing infrastructure and subsurface data availability. However, basin-scale screening commonly...
Design of a dual electric submersible pump hybrid lift system for ultra-deep oil wells
October 2026
Ultra-deep hydrocarbon reservoirs have enormous resource potential, and oil production from ultra-deep wells contributes significantly to energy supply, imposing increasingly stringent demands on extraction...
