Formation mechanisms and resource potential of typical carbonate geothermal reservoirs in the Fen Wei Graben System, China
August 2026
The Fen Wei Graben System, a Cenozoic intracontinental rift basin dominated by far-field tectonic stress in China, hosts abundant geothermal resources, with carbonate formations serving as important...
Intelligent assessment and deflection patterns of in-situ stress orientations along wellbores in shale reservoirs: A case study of the Longmaxi Formation within a complex folded area in the southern Sichuan Basin
August 2026
Complex tectonic belts along the margins of the southeastern Sichuan Basin have emerged as key areas for reserve growth of shale gas in the Longmaxi Formation. However, the superimposition of multi-stage...
Application of magnetotelluric sounding in the exploration of geothermal resources in Banqiao Sag of the Bohai Bay Basin, China
August 2026
The Banqiao Sag possesses a substantial potential for geothermal resources, yet the geothermal geological research in this area remains limited. This study aims to explore the stratigraphic structure...
Resistivity restoration using Spiking Neural Networks for water-flooded zone interpretation in high water-cut sandstone reservoirs
August 2026
Addressing the technical bottleneck of distorted dynamic resistivity responses in water-flooded zones during the development of high water-cut oilfield, where traditional static models and machine learning...
Recent advances in AI-driven production prediction for highly heterogeneous reservoirs: A comprehensive review
August 2026
Accurately forecasting production in highly heterogeneous reservoirs remains a significant challenge due to the complex, nonlinear interactions and uncertainties introduced by geological variability....
Time-dependent wellbore failure in laminated mudrocks: Chrono-mechanical controls from laboratory creep and multi-well field evidence
August 2026
Delayed wellbore failure in clay-rich laminated mudrocks remains a persistent drilling problem that is commonly assessed using instantaneous stability criteria, neglecting time-dependent weakening....
Optimization of CO2-EOR and geological sequestration in sandstone reservoirs via sensitivity analysis and metaheuristic algorithms
August 2026
This study develops a framework for CO2-enhanced oil recovery (EOR) and carbon sequestration in a sandstone reservoir, targeting carbon neutrality. Cumulative oil production (COP), CO2 geological sequestration...
Tight sandstone reservoir quality in the Lower Cretaceous Quantou Formation, Songliao Basin, NE China: Prospects from differential diagenesis and hydrocarbon-water-rock interactions
August 2026
Tight sandstones constitute important oil and gas reservoirs worldwide. However, tight sandstone reservoirs generally exhibit varying porosities and permeabilities due to the occurrence of differential...
Multi-inclusion stress modeling in vuggy carbonates using CT-derived digital cores and extended Eshelby solutions
August 2026
Carbonate reservoirs commonly contain multi-scale dissolution cavities (vugs) that introduce strong heterogeneity and perturb local stress fields. Quantifying stress redistribution in systems with numerous...
Pore-scale numerical simulation of CO2-water alternating gas injection for enhanced oil recovery in heterogeneous porous media
August 2026
To address the problem of low oil recovery efficiency during CO2 flooding in low-permeability and heterogeneous reservoirs, a two-dimensional microscale numerical model for the three-phase flow of oil,...
Characteristics of the morphology, distribution, sulfur isotopes, and genesis of pyrite in source rocks of the Upper Triassic Chang 7 Member, Ordos Basin, China
Available online 11 July 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...
Synergistic mechanisms for improving steam flooding effects during thermal-chemical hybrid fluid injection in heavy oil reservoirs
Available online 7 July 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 +...
Mechanistic constraints on hydrogen-induced pyrite reduction
Available online 4 July 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...
A decoupled elastic wave equation for CO2 monitoring and its numerical simulation
June 2026
Monitoring the migration and potential leakage of carbon dioxide (CO2) is a critical part of carbon capture and storage (CCS). The most widely used monitoring technique is 4D seismic imaging, which...
Aliphatic hydrocarbon distribution as fingerprint for reconstructing the paleoenvironment of the Miocene coal from Muara Teweh Mine, Warukin Formation, Barito Basin, Kalimantan
June 2026
Low-to medium-rank coal reservoirs are considered to have the potential to store biogenic gas reserves and can be processed through downstream thermochemical gasification to produce synthetic gas. To...
Formation mechanisms and play fairway prediction of deep tight-sand reservoirs: A case study of the Yingcheng Formation in the Fulongquan fault depression, Songliao Basin
June 2026
As hydrocarbon exploration in the Songliao Basin progressively shifts from conventional to unconventional targets and from shallow to deep horizons, substantial breakthroughs and significant advancements...
Optimization of CO2 flooding in tight oil based on improved machine learning
June 2026
This study develops an innovative methodology for CO2 flooding optimization in tight oil reservoirs through a novel hybrid analytical framework that effectively combines Grey Relational Analysis (GRA),...
Development and application of a hybrid PDC bit for drilling the high temperature granite formation in the deep geothermal exploration well Fushenre-1
June 2026
Geothermal energy is a clean and renewable energy with significant potential. During the drilling process of geothermal development, conventional drill bits often suffer from significant wear and severe...
Full scale pore throat characterization incorporating a dynamic shape factor and permeability prediction in tight rocks
June 2026
Tight reservoirs represent a significant component of unconventional resources, yet their development is challenged by multiscale and highly heterogeneous pore-throat systems that govern fluid flow....
Genetic model of intraplate volcanic high-temperature geothermal system in Yanggao-Tianzhen Basin, Datong
June 2026
The Yanggao-Tianzhen Basin comprises three stratigraphic sequences from top to bottom, namely the Quaternary, Neogene-Paleogene, and Archean. The Quaternary serves as the regional caprock, and heat...
Architecture and formation of mouth bars in a shoal-water delta: a case study from the Zhahaquan oilfield, Qaidam basin, China
June 2026
Distinguishing between shoal-water deltas and shore-shallow lake beach-bars is challenging, creating a widespread problem for bar-scale reservoir architecture analysis and ultimately affecting oilfield...
Impact of hysteresis of relative phase permeabilities in 3D modeling of cyclic waterflooding in a carbonate reservoir
June 2026
The main task when extracting oil from waterflooded reservoirs during late development stages is enhancing the mobility of the remaining reserves. In the context of declining oil export prices, the...
Carbon sequestration efficiency of urban mangroves: The role of native vs. introduced species
June 2026
This study evaluates species-specific differences in aboveground carbon sequestration among native and introduced tree species in an urban mangrove ecosystem of Guayaquil, Ecuador. Field measurements...
Geothermal energy for enhanced heavy oil recovery: Reducing costs and emissions
June 2026
Geothermal energy offers a promising alternative for enhanced heavy oil recovery, reducing operational costs and environmental impact compared to conventional thermal methods, such as steam injection...
Enhancing CO2 huff-n-puff recovery in tight sandstone via hybrid nanofluid wettability alteration and fracturing
June 2026
Tight sandstone reservoirs are constrained by low permeability and oil-wet surfaces, limiting the efficiency of enhanced oil recovery (EOR) by CO2 huff-n-puff. This study investigates a hybrid nanofluid...
