Carbonate rimmed platform of the Ordovician Yingshan Formation in the Gucheng area of the Tarim Basin and its implications for petroleum exploration, NW China
December 2025
The well deployment in the Ordovician Yingshan Formation in the Gucheng area of the Tarim Basin mainly focuses on the inner gentle slope in the western part of the study area, which results in a low...
Advances and future prospects of shale oil and gas drilling fluid technology
December 2025
This paper systematically reviews the advances in shale oil and gas drilling fluid technology, provides an in-depth analysis of the critical bottlenecks in each technology and explores their future...
Lithium enrichment pattern and resource potential in saline lacustrine shale and prospects for co-production with shale oil
December 2025
Based on the survey of saline lacustrine shales in the Permian Lucaogou Formation and Fengcheng Formation in the Junggar Basin, it is found that the sweet intervals of these shale oil strata are enriched...
Application of new dating and temperature-measuring technologies in study of strike-slip fault-controlled reservoirs and hydrocarbon accumulation: A case study of Ordovician strata in non-foreland area of Tarim Basin, NW China
December 2025
Focusing on the geochronological issues related to the matching relationship between the strike-slip fault activity and the stages of hydrocarbon generation, reservoir formation, and hydrocarbon accumulation,...
Differential hydrocarbon enrichment and its major controlling factors in the southern Tethys Domain
December 2025
Using the latest global datasets of hydrocarbon fields and reservoirs, this study systematically investigates the characteristics of differential hydrocarbon enrichment and its primary controlling factors...
Diffusion, mass transfer and oil mobilization mechanisms of CO2 huff-n-puff in Gulong shale oil reservoirs
December 2025
To reveal the complex crude oil-CO2 interaction mechanism and oil mobilization behavior during CO2 huff-n-puff in shale-type shale oil reservoirs, CO2 huff-n-puff experiments with on-line nuclear magnetic...
Temperature-pressure coupled experiments and response mechanisms of permeability evolution in deep continental shale
December 2025
To address the unclear permeability evolution mechanisms during in-situ conversion of deep continental shale, this study employs a pioneering online THMC (thermo-hydro-mechanical-chemical)-CT coupled...
Key controls on the formation of reservoirs along the ultra-deep strike-slip fault zone in the depression of the northern Tarim Basin, NW China
December 2025
Based on the data of reservoir rock cores and 3D seismic inversion for reservoir, a comprehensive analysis was conducted using in-situ U-Pb dating of calcite cements, fluid inclusions, and geochemical...
Evaluation methodology of coal-rock gas resources and exploration potential of favorable areas in onshore China
December 2025
Based on new understandings of the whole petroleum system theory for coal measures, and utilizing data from coal-rock gas wells and other oil and gas wells in numerous pilot test areas for key parameter...
Multi-component hydrocarbon-generation patterns and geological significance of the Permian Pusige Formation source rocks in the piedmont of southwestern Tarim Basin, NW China
December 2025
The traditional binary hydrocarbon-generation patterns are inadequate for accurately evaluating the hydrocarbon- generation potential of different types of source rocks in the Permian Pusige Formation...
Lamina combination characteristics and hydrocarbon enrichment mechanism of continental shale formations: A case study of the second member of the Paleogene Funing Formation in the Qintong Sag, Subei Basin, China
December 2025
Taking the shale of the second member of the Paleogene Funing Formation in the Qintong Sag, Subei Basin, China, as an example, this study integrates methods such as rock section imaging, optical and...
A temperature-sensitive acidic completion fluid technology
December 2025
A temperature-sensitive mud cake remover (G315) was developed using ethyl lactate as the primary component. Based on this, a temperature-sensitive acidic completion fluid (CF-G315) was formulated. Core...
Fracture morphology of variable pumping-rate hydraulic fracturing in middle and deep coal reservoirs
December 2025
Outcrop coal samples from the Shizhuang South Block of the Qinshui Basin, Shanxi Province, China, were subjected to true triaxial hydraulic fracturing experiments to simulate fracture propagation. Combined...
Main controlling factors and accumulation model of shale gas enrichment in the Permian Dalong Formation, Western Hubei-Eastern Chongqing complex structural zone, China
December 2025
To clarify the main enrichment-controlling factors and accumulation mechanisms of shale gas in the Permian Dalong Formation within the Western Hubei–Eastern Chongqing complex structural zone, this study...
Development indicators evaluation and technical optimization direction for deep coal-rock gas: A case study of Ordos Basin, NW China
December 2025
Through systematic investigation of deep coal-rock gas in the Ordos Basin, NW China, this work analysed the thickness distribution of the entire Upper Paleozoic coal-rock intervals, quantified the resource...
Mechanism of enhanced coalbed methane desorption regulated by fracturing fluid imbibition in deep coal seams
December 2025
Low-salinity fracturing fluids tend to induce ion migration, alter wettability, and cause fluctuations in gas desorption efficiency when penetrating deep coal seams. Taking the No. 8 coal from the Daning–Jixian...
Intelligent identification and distribution of faults and associated fracture zones in tight sandstone reservoirs: A case study of the fifth member of Triassic Xujiahe Formation in Wubaochang area, northeastern Sichuan Basin, SW China
December 2025
The faults and associated fracture zones in the tight sandstone reservoirs of the fifth member of the Triassic Xujiahe Formation (Xu-5 Member) in the Wubaochang area, northeastern Sichuan Basin, play...
Integrated reservoir stimulation with polyacrylamide hydrogels and surfactant solutions for oil recovery enhancement
December 2025
The compound system of polyacrylamide hydrogels and surfactant solutions are used for enhanced oil recovery (EOR). The polyacrylamide hydrogels are injected into block high-permeability zones firstly,...
Acid imbibition and ion diffusion characteristics during fracturing and acidizing of volcanic rock reservoirs: A case study of Carboniferous volcanic rocks in Junggar Basin, NW China
December 2025
Four types of volcanic rock samples, i.e. breccia, andesite, tuff, and dacite, selected from the Carboniferous in the Junggar Basin were characterized through experiments such as X-ray diffraction (XRD),...
Advances, challenges, and prospects of carbon dioxide capture, utilization, and storage technologies for carbon neutrality
December 2025
This study reviews the recent progress and trends of carbon capture, utilization and storage (CCUS) technologies, with a particular focus on related policy orientations, technological status, and representative...
Composite whole petroleum system and orderly distribution of natural gas in deep-water strongly active basins in northern South China Sea: A case study of Qiongdongnan Basin, China
December 2025
Under the guidance of the whole petroleum system theory, using seismic, drilling and laboratory analysis data, and combined with the practical achievements of oil and gas exploration, the distribution...
Transmission mechanism from orbital forced climate change to organic matter and shale oil enrichment: A case study of Gulong shale oil in the Cretaceous Qingshankou Formation, Songliao Basin, NE China
October 2025
Taking the GY8HC well in the Gulong Sag of the Songliao Basin, NE China, as an example, this study utilized high-precision zircon U-Pb ages from volcanic ashes and AstroBayes method to estimate sedimentation...
Control of negative inversion structures on high-quality Carboniferous buried hill reservoirs in the Weixinan Sag, Beibu Gulf Basin, China
October 2025
Based on drilling, mud logging, core, seismic and imaging logging data, this paper studies the identification and evolution process of negative inversion structures in the Carboniferous buried hills...
Structural physical simulation experiment on vertical growth process of strike-slip faults in ultra-deep strata of Tarim Basin, NW China
October 2025
In the ultra-deep strata of the Tarim Basin, the vertical growth process of strike-slip faults remains unclear, and the vertical distribution of fractured-cavity carbonate reservoirs is complex. This...
Experiment on proppant transport into fractures of unconventional reservoirs using stereoscopic particle image velocimetry
October 2025
Stereoscopic particle image velocimetry technology was employed to investigate the planar three-dimensional velocity field and the process of proppant entry into branch fractures in a fracture configuration...