Using extreme gradient boosting with Optuna hyperparameter tuning for efficient lost circulation prediction
April 2026
Lost circulation (LC) remains a significant challenge in drilling operations, leading to increased costs, non-productive time, and potential well integrity issues. This study focuses on predicting lost...
High-resolution mechanical characterization of lacustrine shale oil reservoir in China based on scratch testing
April 2026
The lacustrine shale oil reservoirs in China exhibit pronounced heterogeneity and anisotropy. Conventional approaches for characterizing shale mechanical properties—such as plug-scale mechanical testing...
Impact of particle transport dynamics on reservoir quality: From laboratory experiments to field-scale applications
Available online 21 March 2026
In the waterflooding process of fine-grained silty sandstone reservoirs, fine particles frequently migrate toward near-wellbore regions, potentially plugging the sand control system. This migration...
Quantitative geophysical prediction of shale TOC based on neural networks: A case study in the southern Sichuan Basin, China
Available online 21 March 2026
Accurate prediction of total organic carbon (TOC) content is critical for evaluating the quality of hydrocarbon source rocks at drilling sites. Conventional well logging data, however, fall short in...
Log-based fracturing interval selection of granitic hot dry rocks in well FSR-1, Beibu Gulf Basin, South China
Available online 13 March 2026
In 2024, a significant breakthrough was achieved in well FSR-1, a scientific exploration well targeting deep geothermal resources in the Beibu Gulf Basin along the coastal region of South China. This...
Carbon dioxide plumes, pressure space and legacy well risk for Southern North Sea CO2 storage projects
February 2026
Unsecured legacy wells pose significant risks to carbon capture and storage (CCS) as they present potential leakage pathways for stored CO2 to return to the atmosphere. In the UK, legacy wells must...
A rock physics model-based approach to delineate deep and tight sand reservoir heterogeneity in the Bohai Bay Basin, China
February 2026
Delineating sweet spots is critical for the exploration and production of oil and gas in deep and tight sand reservoirs. The lack of advanced and reliable methods makes this a challenge for geologists...
Exploring the role of organofacies in governing kerogen kinetics: A case study of the Permian Gondwana coals from India
February 2026
This study investigates four Late Permian Gondwana coals from the Raniganj sub-basin, Damodar Valley and three Early Permian Gondwana coals from the Talcher sub-basin, Mahanadi Valley. The study aims...
Physical property characteristics and controlling factors of shale oil reservoirs in the Beibuwan Basin, southern China
February 2026
The Liushagang Formation in the Weixinan Depression, Beibuwan Basin, southern China, is one of the key stratigraphic units for offshore shale oil exploration in the country. The shale oil reservoirs...
Differential accumulation mechanism of shale gas in superimposed basins: Insights from dynamic evolution of shale gas content and occurrence state
February 2026
By investigating the evolution of shale gas generation, storage, adjustment and accumulation under different structural settings in superimposed basins, this study elucidates the differential accumulation...
A reservoir rock wettability modifier for ultra-high temperature and high salinity environment
February 2026
During drilling process, the water phase in drilling fluids infiltrates rock fractures through capillary action. The surface wettability of dolomite is governed by multiple factors, resulting in an...
Comparative study of the geological characteristics of sedimentary basins in Ghana: Implications for hydrocarbon generation potential
February 2026
Ghana has four sedimentary basins, but attention has mostly been concentrated on the Tano Basin. This preference among potential investors is largely due to the fact that it has been extensively studied...
Fault sealing evolution in complex fault zones of the Houxia Basin, China
February 2026
Fault sealing capacity is controlled by present-day geometry and clay content, with current research focusing on enhancing the accuracy of capacity estimates. The mechanisms for evaluating both present-day...
Numerical simulations of geological CO2 storage in a gas reservoir of the B depression, Pearl River Mouth Basin
February 2026
Geological CO2 storage is a promising strategy for reducing greenhouse gas emissions and has become a growing focus of research and deployment. This paper presents numerical simulations of CO2 injection...
Unconventional rare earth element archives in the energy transition era: The Cenozoic organic sediments from west coast of southern India
February 2026
Organic-rich sediments represent vital components of Earth's geochemical cycles, acting both as potential hydrocarbon and coal reservoirs and as unconventional archives for critical metals such as rare...
Characteristics of carbon emission point sources and industry analysis in the Guangdong-Hong Kong-Macau Greater Bay Area
February 2026
Carbon Capture, Utilization, and Storage (CCUS) technology has gained widespread attention in recent years as a critical strategy to combat global climate change, particularly in achieving carbon neutrality...
Big data-driven analysis of shale gas enrichment patterns: A case study of the Wufeng–Longmaxi Formation in the Sichuan Basin and its periphery
February 2026
The Wufeng–Longmaxi Formation derives its name from the Upper Ordovician Wufeng Formation and the Lower Silurian Longmaxi Formation, found in sequence in the Sichuan Basin. This formation hosts rich...
Multi-source and multi-attribute collaborative fracture network modeling of a sandstone reservoir in Ordos Basin
February 2026
The effective channeling of fluid flow by fractures is a liability for enhanced oil recovery (EOR) methods like CO2 flooding or CO2 storage. Developing a distributed fracture model to understand the...
Assessment of carbon dioxide storage in the Gulf of Gabes, Tunisia: Analytical and numerical modeling
February 2026
Significant hydrocarbon accumulations in the offshore Gulf of Gabes, Tunisia, remain largely undeveloped due to elevated concentrations of carbon dioxide (CO2), nitrogen (N2), and hydrogen sulfide (H2S),...
Diagenetic controls on reservoir quality in deep ultra-thick sandstones: a case study from the Huagang Formation, Xihu Depression, East China Sea
February 2026
Tight sandstone reservoirs represent a pivotal unconventional oil and gas production target. The upper section of the deeply buried Huagang Formation in the Xihu Depression is abundant in hydrocarbons...
Thermoelastic full-waveform inversion for joint estimation of subsurface temperature and seismic velocities in geothermal exploration
Available online 20 January 2026
Seismic exploration is the most precise geophysical method for investigating and forecasting subsurface resources, yet its conventional fully elastic assumption neglects temperature effects, limiting...
Resistivity restoration using Spiking Neural Networks for water-flooded zone interpretation in high water-cut sandstone reservoirs
Available online 14 January 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...
Impact of salt dome morphology on geological storage volumetric estimations: Implications for prospect-scale assessment
December 2025
Geological storage in salt caverns plays a critical role in managing energy resources, yet regional assessments often fall short in accounting for specific salt dome morphological variations that can...
Mitigating clay swelling and permeability loss in thermal EOR with a quaternary ammonium clay stabilizer under high-temperature low-salinity conditions
December 2025
Clay swelling and fines migration pose significant challenges to thermally enhanced oil recovery (EOR) operations, particularly in clay-rich formations. This study systematically investigates clay swelling...
Implications of the geochemical characteristics of post-fracturing flowback fluids for shale gas exploration and exploitation
December 2025
Previous studies on post-fracturing flowback fluids focus primarily on their cleaning and discharge, high salinity sources, and damage to gas reservoirs. An analysis of the geochemical characteristics...