Traffic light system regulation of induced seismicity under multi-well fluid injection
June 2025
The occurrence time and magnitude of injection-induced seismicity are influenced by engineering factors, such as wellhead pressure, injection location, injection volume, and injection rate. Understanding...
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Quantitative characterization and vertical evolution of fan delta sand bodies: A case study of the Liushagang Formation in the Weixi'nan sag, China
June 2025
The study on sand body connectivity and distribution patterns is of great significance for well emplacement and injection-production pattern analysis in the A oilfield of the Weixi'nan Sag currently...
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Seismic and petrophysical data analysis for geological interpretation and subsurface modeling of Keva Field, onshore Niger Delta, Nigeria
June 2025
This study integrates seismic and petrophysical data to evaluate the subsurface geology of the Keva Field, located onshore in the Niger Delta, with the objective of constructing a 3D geological model...
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Determining CO₂ front in CO₂-EOR using a well-testing method
June 2025
CO2 flooding is a widely recognized method for enhanced oil recovery (EOR). This study aims to develop an accurate prediction method for determining the location and migration pathway of CO2 front,...
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Machine learning-based prediction of physical parameters in heterogeneous carbonate reservoirs using well log data
June 2025
This study explores the application of machine learning techniques for predicting permeability, porosity, and flow zone indicator (FZI) in carbonate reservoirs using well log data, aiming to overcome...
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The control of differential tectonics on the formation of deep reservoirs in lacustrine rift basins: An insight of the Bodong Low Uplift in the Bohai Bay Basin, East China
June 2025
Tectonic activities significantly impact deep reservoir properties via sedimentary and diagenetic processes, and this is particularly true for lacustrine rift basins. The tectonic-sedimentary-diagenetic-reservoir...
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Quantitative characterization of permeability heterogeneity of tight-sand reservoirs using nano-CT technology: A case study of the Yanchang Formation, Ordos Basin
June 2025
The physical properties of hydrocarbon reservoirs are important factors affecting the percolation ability of the reservoirs. Tight-sand reservoirs exhibit complex pore throat connectivity due to the...
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Gas geochemistry evaluation of onshore Colombian basins: New insights for natural gas and liquified petroleum gas prospectivity
June 2025
This study examines the molecular and isotopic composition of 193 gas samples collected from oil and gas fields across Colombia's onshore basins with active hydrocarbon production. Comparative analyses...
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A model for predicting marine shale gas sweet spots based on relative sea-level changes and its application
June 2025
Gas-bearing shales have become a major source of future natural gas production worldwide. It has become increasingly urgent to develop a reliable prediction model and corresponding workflow for identifying...
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Control of volcanic lithofacies on play fairways: A case study of the Huoshiling Formation in the Dehui faulted depression, southern Songliao Basin, China
June 2025
Volcanic reservoirs demonstrate strong heterogeneity and substantial variations in productivity due to the complexity of volcanic eruption and lithology. The main types of reservoir space are not clear,...
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Identification of denudation periods and thickness in petroliferous basins and their geological significance: A case study of the central Sichuan Basin
June 2025
Restoration of denudation thickness is of great significance to understanding tectonic evolution, hydrocarbon migration and accumulation history in petroliferous basins. How to accurately restore and...
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Integrating geographic information system and 3D virtual reality for optimized modeling of large-scale photovoltaic wind hybrid system: A case study in Dakhla City, Morocco
June 2025
This research pioneers the integration of geographic information systems (GIS) and 3D modeling within a virtual reality (VR) framework to assess the viability and planning of a 20 MW hybrid wind-solar-photovoltaic...
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Mechanisms of CO2 enhanced gas recovery in tight-sand gas reservoirs
June 2025
Experimental results from the Daniudi gas field enhance our understanding of mechanisms behind CO2 injection for enhanced recovery from tight-sand gas reservoirs. The results reveal that the diffusion...
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Prediction on rock strength by mineral composition from machine learning of ECS logs
June 2025
Rock strength evaluation is critical in oil and gas exploration, but traditional methods, such as empirical formulas, laboratory tests, and numerical simulations, often struggle with accuracy, generalizability,...
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Hybrid CO2 thermal system for post-steam heavy oil recovery: Insights from microscopic visualization experiments and molecular dynamics simulations
June 2025
The hybrid CO2 thermal technique has achieved considerable success globally in extracting residual heavy oil from reserves following a long-term steam stimulation process. Using microscopic visualization...
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Application of iso-frequency extractions and spectral frequency blending in hydrocarbon delineation of thin-pay and thick-pay reservoirs, Niger Delta Basin
June 2025
Delineation of hydrocarbon-bearing sands and the extent of accumulation using seismic data is a reoccurring challenge for many fields. This study addressed the existing challenges of delineating a known...
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Unlocking the potentials of depleted gas fields: A numerical evaluation of underground CO2 storage and geothermal energy harvesting
June 2025
Using partial underground CO2 storage as a working agent to harvest geothermal energy is a promising carbon capture, utilization, and storage (CCUS) method. It is particularly economically feasible...
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Review on assessment methodology for hydrothermal resources based on renewable energy attributes
June 2025
Accurate and effective assessment of hydrothermal resources is crucial in the geothermal industry, given that the global installed capacity for direct use (173 303 MW) significantly exceeds that for...
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Petroleum system, filling history and age appraisal of source rocks of the Niger Delta Basin: Fingerprinting of pentacyclic triterpenoids
June 2025
Gas chromatography-mass spectrometry (GC-MS) was used to analyze the pentacyclic triterpenoid distributions, specifically hopane and oleanane fingerprints, in 24 crude oil samples from the Niger Delta...
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Gasbag phase-change carbon dioxide energy storage: Development and economic study
June 2025
The Gasbag Phase-change Carbon Dioxide Energy Storage System leverages elastic gasbags to store carbon dioxide under varying geographical conditions. This approach utilizes the phase-change sensible...
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Linking energy consumption to ecological footprint in sub-Saharan Africa with education as a moderator
June 2025
Low levels of environmental education, energy consumption, and other anthropogenic factors strongly contribute to the rising temperature in the world's atmosphere. As such, this study reveals how energy...
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Thermo-hydro-mechanical-chemical coupling effects on the integrated optimization of CO2-EOR and geological storage in a high water-cut reservoir in Xinjiang, China
April 2025
Carbon dioxide-enhanced oil recovery (CO2-EOR) and storage is recognized as an economically feasible technique if used in suitable reservoirs. The type or form and capacity of this CO2 sequestration...
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Hydrothermal activity and its influence on hydrocarbon accumulation in deep dolomite reservoirs of the Ediacaran Dengying Formation, Sichuan Basin
April 2025
There are abundant hydrothermal events within the Dengying Formation dolomite of the Precambrian system in southwest China. Methods including petrography identification, fluid-inclusion observation,...
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Clastic facies classification using machine learning-based algorithms: A case study from Rawat Basin, Sudan
March 2025
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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Combined application of FTAN and cross-spectra analysis to ambient noise recorded by a microseismic monitoring network
March 2025
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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