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...
Genesis analysis of high-temperature geothermal systems in the Western Yunnan: geochemical evidence from geothermal fluids
April 2026
The formation of high-temperature geothermal systems is widely regarded as inextricably linked to magmatic or volcanic activity, given that both magmatism and volcanism are indicative of extreme high...
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...
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...
Granite thermal conductivity based on mineral and chemical compositions: An evaluation based on hybrid models and implications on geothermal resource
April 2026
Rock thermal conductivity (TC) is a critical parameter in geothermal energy exploration and geological engineering, and is strongly influenced by the mineralogical and geochemical composition of rocks....
Role of Ammonium in CO2 Mineralization and Enhanced Oil Recovery
Available online 22 April 2026
This study presents an ammonium-assisted surface treatment strategy that couples CO2 mineralization with smart water (SW) injection for carbonate reservoirs, enabling simultaneous carbon utilization...
Application of magnetotelluric sounding in the exploration of geothermal resources in Banqiao Sag of the Bohai Bay Basin, China
Available online 21 April 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...
Intelligent assessment and deflection patterns of in-situ stress orientations along wellbores in shale reservoirs: A case study of the Longmaxi Formation within a complexly folded area in the southern Sichuan Basin
Available online 9 April 2026
Complex tectonic belts along the margins of the southeastern Sichuan Basin have emerged as a key replacement for the additions to reserves from reserve growth of shale gas from the Longmaxi Formation....
Carbon capture, utilization, and storage: Advances made by Sinopec and future prospects
Available online 3 April 2026
Carbon capture, utilization, and storage (CCUS) has emerged as a critical technology for addressing climate change and achieving net-zero emissions. Since the 1980s, Sinopec has actively advanced research...
Temperature-driven enhancement of methane-water displacement in low-rank coal: Experimental insights for deep CBM recovery
Available online 1 April 2026
Gas-water two-phase seepage is a key factor governing recovery efficiency during deep coalbed methane (CBM) extraction. Gas-driven water displacement experiments in coal provide essential insights into...
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...
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...
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...