Quantitative recognition and petroleum geological significance of interlayers in coastal sandstone reservoirs: A case study from the Donghe Sandstone in the Hade Oilfield, Tarim Basin, NW China
December 2025
Buried coastal sandstones would be of high-quality hydrocarbon reservoirs. Controlled by deposition and diagenesis, coastal sandstones mixed with muddy and calcareous materials are usually low in porosity...
Impact of salt dome morphology on geological storage volumetric estimations: Implications for prospect-scale assessment
December 2025
Geological storage in salt caverns plays a critical role in managing energy resources, yet regional assessments often fall short in accounting for specific salt dome morphological variations that can...
Mitigating clay swelling and permeability loss in thermal EOR with a quaternary ammonium clay stabilizer under high-temperature low-salinity conditions
December 2025
Clay swelling and fines migration pose significant challenges to thermally enhanced oil recovery (EOR) operations, particularly in clay-rich formations. This study systematically investigates clay swelling...
Exploring interconnected indicators of energy transition: A global perspective
December 2025
This study aims to evaluate the relative importance of the pillars and indicators within the Energy Transition Index (ETI) and their influence on overall ETI performance. Using a dataset from the World...
Exploring the geochemical, petrographic, and palynological signatures: An analysis of the Mungaroo Formation source rock potential in the Exmouth Plateau, Northern Carnarvon Basin, Australia
December 2025
The Late Triassic Mungaroo Formation of the Exmouth Plateau was investigated through an integrated, stratigraphically and geographically extensive study to characterize its source rock potential and...
Integrated field characterization and static hydrocarbon reserve estimation of the Penobscot Field, Nova Scotia, Canada
December 2025
The Penobscot Field, located within the Scotian Basin offshore Nova Scotia, Canada, represents an underexplored hydrocarbon field with potential for future development. Previous studies have been confined...
Hydrocarbon source rock potential of the Late Cretaceous sediments in the Asaga–Ohafia Axis, Afikpo Basin, Nigeria: Insights from facies and kerogen analyses
December 2025
This study investigated the hydrocarbon source rock potential of the Late Cretaceous Mamu and Nkporo formations in the Asaga–Ohafia Axis, Afikpo Basin, southeastern Nigeria, using integrated facies...
Microscopic pore combination type identification of tight sandstone reservoir based on improved swin transformer architecture
December 2025
Tight sandstone reservoirs differ fundamentally from conventional medium to high permeability reservoirs due to their complex and heterogeneous microscopic pore structures. This complexity poses significant...
Key geological and engineering technologies and research directions for shale gas exploration and development in western Hubei Province, China
December 2025
Multiple sets of marine shale sequences occur in western Hubei Province and its adjacent areas within the Middle-Upper Yangtze region, offering substantial resource potential. However, their shale gas...
Reservoir characterization and well production proxy analyses on drill cuttings: Case study from the Flysch play in the Vienna Basin (NE Austria)
December 2025
Drill cuttings, though rarely used, are crucial subsurface samples to understand petrographic properties affecting reservoir quality. Unlike core material, cuttings are continuously available along...
Quantifying fracture evolution characteristics of gravelly sandstones based on fractal theory
December 2025
With the advancement of unconventional oil and gas exploration and development, tight gravelly sandstone reservoirs have garnered increasing attention. In this study, triaxial compression experiments...
Fault sealing effect on hydrocarbon accumulation in the Yuquan area of the Xihu Sag, East China Sea Basin
December 2025
This study examines the effect of fault sealing on hydrocarbon accumulation in the Xihu Sag where NE- and NNE-striking faults within the sag prevent the escape of trapped oil and gas. Analyses like...
Delineation of depth to basement and subsurface structures beneath the Gerad Graben, western Sirt Basin, Libya, from gravity and aeromagnetic data
December 2025
This study integrates gravity and aeromagnetic datasets to delineate basement depth and characterise the subsurface structural framework of the Gerad Graben in the western Sirt Basin, Libya. Techniques...
Influence of mineral evolution on pore development in marine shales based on thermal simulation experiments
December 2025
High-temperature thermal simulation experiments (500–1000 °C) were conducted with samples from the Lower Cambrian Niutitang Formation shale to investigate its mineral evolution and pore development....
Regional sedimentary responses to syndepositional faulting and reservoir potential of Upper Cretaceous limestones in the B Oilfield, Mesopotamian Basin
December 2025
Upper Cretaceous limestones represent the primary reservoirs in the B Oilfield, central Mesopotamian Basin. While syndepositional faults have clear influences on the thickness of these strata, their...
Investigation on full-scale pore characterization and its implications for gas storage and development potential of deep coal seam in the Jiaxian block, NE Ordos Basin, China
December 2025
Deep coal reservoirs (buried depth > 2000 m) represent a significant yet underexploited resource for coalbed methane (CBM) production. In these reservoirs, CBM primarily exists in adsorbed and free...
Quantitative kinetic modeling of methane generation and δ13C signals for multiple samples in closed-system pyrolysis
December 2025
Hydrocarbon generation kinetics are influenced by complex factors, including temperature, reaction time, pressure, and molecular structure, which render simple modeling approaches inadequate for accurately...
A preliminary evaluation of carbon dioxide sequestration in coal seams at the Mae Moh mine, northern Thailand: A review
December 2025
The Mae Moh lignite-fired power plant is the only lignite-fired power plant and is the main point source of CO2 emissions in Thailand. This power plant uses lignite supplied from the Mae Moh lignite...
Origin of bedding-parallel fibrous calcite veins in the Permian carbonate, central Thailand: Constraint on hydrocarbon generation
December 2025
Bedding-parallel fibrous calcite veins (BPCVs) are found extensively in sedimentary basins and usually developed in petroleum source rock; however, their origin remains debated. This study investigates...
Implications of the geochemical characteristics of post-fracturing flowback fluids for shale gas exploration and exploitation
December 2025
Previous studies on post-fracturing flowback fluids focus primarily on their cleaning and discharge, high salinity sources, and damage to gas reservoirs. An analysis of the geochemical characteristics...
Big data-driven analysis of shale gas enrichment patterns: A case study of the Wufeng–Longmaxi Formation in the Sichuan Basin and its periphery
Available online 17 October 2025
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...
Carbon dioxide plumes, pressure space and legacy well risk for Southern North Sea CO2 Storage Projects
Available online 15 October 2025
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...
An intelligent log-seismic integrated stratigraphic correlation method based on wavelet frequency-division transform and dynamic time warping: A case study from the Lasaxing oilfield
September 2025
Stratigraphic correlations are essential for the fine-scale characterization of reservoirs. However, conventional data-driven methods that rely solely on log data struggle to construct isochronous stratigraphic...
Hydrocarbon generation characteristics and potential of liptinite-rich coal in China
September 2025
Coal-measure source rocks may play an important role in hydrocarbon generation in petroliferous basins where coal seams are well developed. Hydrocarbon generation characteristics and potential of coal-measure...
Key technologies for increasing production based on the best practices of major shale oil and gas basins
September 2025
Key technologies that make productivity increase are revealed through analyzing the best practices and production data in major shale basins of North America. Trends of the key technologies and optimization...