Big data analysis of waterflood performance in mature conventional oilfields in Eastern China
April 2026
Most conventional oilfields in Eastern China with waterflood operations have reached ultra-high water cut in recent decade. The high water injection demand and produced water treatment cost pose significant...
Experimental techniques for qualitative and quantitative characterization of shale oil reservoir space, minerals, and fluids
April 2026
Characterizing shale oil reservoirs encompassing pore space, mineralogy, and fluids is fundamental to effective exploration and development. Recent advances in experimental techniques have significantly...
Exploring the impact of AI technology innovation on energy intensity: The role of ICT development and renewable energy integration
April 2026
As global energy demand continues to intensify, artificial intelligence technology innovation (AITI) offers emerging possibilities for improving energy efficiency and supporting sustainable energy transitions....
Characterization of gravity-flow deposits in the Chang 7–9 oil groups in the Yanchang Formation, Ganquan County, Ordos Basin
April 2026
This study aims to address the challenges associated with the identification of the sedimentary facies of gravity-flow deposits in the 7th to 9th oil groups of the Yanchang Formation (also referred...
Mechanical responses of deep salt caverns under synchronous and asynchronous operation strategies
April 2026
In China, gas storage in deep salt caverns faces challenges due to high in situ stresses, elevated geothermal temperatures, and the presence of interbedded salt-mudstone formations. These factors lead...
Evaluating calcite as a catalyst for pyrite-hydrogen reactions and hydrogen sulfide generation
April 2026
In nature, the presence of accessory minerals found in the subsurface have a potential to react with stored hydrogen in process of underground hydrogen storage. Pyrite (FeS2), the most abundant sulfide...
Multi-source hydrocarbon accumulation in the faulted and deeply depressed Tangdong area, Qikou Sag, Bohai Bay Basin
April 2026
Based on organic geochemical analysis data, this study examined the characteristics of multi-source hydrocarbon accumulation in the Tangdong area of Qikou Depression, Bohai Bay Basin. The results indicate...
Toward basin-agnostic well log imputation and anomaly detection via a pre-trained time-series foundation model
April 2026
Interpretation of subsurface storage characterization heavily depends on the quality and continuity of well log data. However, missing measurements and anomalous responses are common due to geological...
Method for determining the reasonable wellhead pressure of gas storage production wells: A case study of the Liuzhuang gas storage reservoir, China
April 2026
For the Liuzhuang gas storage reservoir with edge and bottom water, excessively high bottomhole pressure of production wells can cause edge and bottom water breakthrough, which reduces the effective...
Porosity and permeability prediction from petrographic point-counting data using machine learning: Applications to Rotliegendes and Buntsandstein reservoirs
April 2026
Machine learning approaches are widely used in geosciences. However, one widely available dataset in reservoir geology remains underrepresented in published works: petrographic data from classical point-counting...
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...