Key aspects of underground hydrogen storage in depleted hydrocarbon reservoirs and saline aquifers: A review and understanding
October 2024
Underground hydrogen storage is critical for renewable energy integration and sustainability. Saline aquifers and depleted oil and gas reservoirs represent viable large-scale hydrogen storage solutions...
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Impacts of interactions with low-mineralized water on permeability and pore behavior of carbonate reservoirs
October 2024
Laboratory filtration experiments are employed to investigate effective well killing while minimizing its impacts on surrounding rocks. The novelty of this experimental study lies in the prolonged exposure...
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Integrating petrophysical data into efficient iterative cluster analysis for electrofacies identification in clastic reservoirs
October 2024
Efficient iterative unsupervised machine learning involving probabilistic clustering analysis with the expectation-maximization (EM) clustering algorithm is applied to categorize reservoir facies by...
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Recent advances in switchable surfactants for heavy oil production: A review
October 2024
Surfactants are extensively employed in the cold production of heavy oil. However, producing heavy oil emulsions using conventional surfactants poses a challenge to spontaneous demulsification, necessitating...
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OFC
October 2024
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ToC
October 2024
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Combined application of FTAN and cross-spectra analysis to ambient noise recorded by a microseismic monitoring network
Available online 30 October 2024
A case study of seismic interferometry applied to a small microseismic monitoring network is here presented. The main objectives of this study are (i) to quantify the lateral variability of shear-wave...
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Estimation of parameters for 3D geomechanical modeling from triaxial test results
Available online 29 October 2024
Triaxial testing serves as a fundamental method for evaluating the elastic and strength properties of rocks, crucial for developing accurate 3D geomechanical models. This paper presents a novel method...
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Clastic facies classification using machine learning-based algorithms: A case study from Rawat Basin, Sudan
Available online 26 October 2024
Machine learning techniques and a dataset of five wells from the Rawat oilfield in Sudan containing 93,925 samples per feature (seven well logs and one facies log) were used to classify four facies....
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A deep learning framework for suppressing prestack seismic random noise without noise-free labels
July 2024
Random noise attenuation is significant in seismic data processing. Supervised deep learning-based denoising methods have been widely developed and applied in recent years. In practice, it is often...
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Sealing capacity evaluation of underground gas storage under intricate geological conditions
July 2024
Evaluating underground gas storage (UGS) sealing capacity is essential for its safe construction and operational efficiency. This involves evaluating both the static sealing capacity of traps during...
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Outcrops as windows to petroleum systems: Insights from the southern Bida Basin, Nigeria
July 2024
The study assessed petroleum systems in the southern Bida Basin, Nigeria, focusing on the Cretaceous sediments. Reservoirs comprise Lokoja and Patti Formation sandstones, while shales, claystone, and...
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A new method for quantitative evaluation of shale laminae using electrical image logging
July 2024
Shale oil reservoirs are generally characterized by complex mineral compositions, rapid lithofacies changes, and thin laminae. Explorations have confirmed that the type and density of shale laminae...
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A log-based method for fine-scale evaluation of lithofacies and its applications to the Gulong shale in the Songliao Basin, Northeast China
July 2024
The Gulong shale demonstrates high clay content and pronounced thin laminations, with limited vertical variability in log curves, complicating lithofacies classification. To comprehend the distribution...
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Key geological factors governing sweet spots in the Wufeng-Longmaxi shales of the Sichuan Basin, China
July 2024
Production performance of the Wufeng-Longmaxi shales varies significantly among Fuling, Weirong, and Wulong fields in the Sichuan Basin. Total organic carbon (TOC) content, mineralogy, and organic matter...
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Shale primary porosimetry based on 2D nuclear magnetic resonance of T1-T2
July 2024
Porosity, a key parameter in assessing the physical properties of shale reservoirs and the reserves, is of great significance to the selection and evaluation of shale sweet spots. There are many methods...
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Oil-source correlation and Paleozoic source rock analysis in the Siwa Basin, Western Desert: Insights from well-logs, Rock-Eval pyrolysis, and biomarker data
July 2024
Understanding the origins of potential source rocks and unraveling the intricate connections between reservoir oils and their source formations in the Siwa Basin (Western Desert, Egypt) necessitate...
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Hydrocarbon generation potential of Campano-Maastrichtian to Paleogene shales in the Benin Flank of the Anambra Basin, SW Nigeria
July 2024
The hydrocarbon generation potential of the Campano-Maastrichtian to Paleogene shales from the Benin Flank (located in SW Nigeria) of the Anambra Basin, has been previously investigated mostly by studying...
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Influence of reservoir heterogeneity on immiscible water-alternating-CO2 flooding: A case study
July 2024
Currently, limited studies of immiscible water-alternating-CO2 (imWACO2) flooding focus on the impact of reservoir heterogeneity on reservoir development outcomes. Given this, using the heterogeneous...
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Formation mechanisms and resource potential of carbonate geothermal reservoirs in the Beijing-Tianjin-Hebei plain
July 2024
Investigating the formation mechanisms of carbonate geothermal reservoirs is of theoretical and practical significance for summarizing the formation pattern of geothermal resources and further guiding...
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Role of high-density brines in reservoir development stages: A review
July 2024
High-density brines have been recognized beneficial for oilfield applications, with various key areas such as drilling, completion and formation evaluation. High-density brines can play a critical role...
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A 2D stability analysis of the rock surrounding underground liquified natural gas storage cavern based on COMSOL Multiphysics
July 2024
Underground liquified natural gas (LNG) storage is essential in guaranteeing national energy strategic reserves, and its construction is being accelerated. The stability of surrounding rock of underground...
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Paleoenvironment of marine-continental transitional shales in the lower Permian Shanxi formation, southeastern Ordos Basin, China
July 2024
The paleoenvironment of shales can be reconstructed to some extent using the combinations or concentrations of elements that correlate strongly with environmental conditions. In this study, we analyzed...
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Production forecasting methods for different types of gas reservoirs
July 2024
Hydrocarbon production in oil and gas fields generally progresses through stages of production ramp-up, plateau (peak), and decline during field development, with the whole process primarily modeled...
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