Temperature-driven enhancement of methane-water displacement in low-rank coal: Experimental insights for deep CBM recovery
August 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...
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...
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...
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...
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...
Thermoelastic full-waveform inversion for joint estimation of subsurface temperature and seismic velocities in geothermal exploration
April 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...