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...
Rock damage and fault reactivation mechanisms under initial perturbation in enhanced geothermal systems
June 2026
This study elucidates injection-induced fault reactivation mechanisms in Enhanced Geothermal Systems through integrated thermo-hydro-mechanical-damage (THMD) numerical modeling of China's Huangshadong...
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...
CO2 flooding technology for enhanced oil recovery in tight oil reservoirs: A review
June 2026
Tight oil is recognized as an important unconventional hydrocarbon resource. However, the exploitation of tight oil reservoirs faces serious challenges due to their low porosity and permeability, and...
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...
The thermal role of granitic bodies in geothermal system: Insights from South China
June 2026
Granite is widely recognized for their elevated radioactive heat generation and relatively high thermal conductivity, making it an important contributor to the thermal structure of geothermal systems....
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...
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...
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...
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...
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...