Status and perspectives on CCUS clusters and hubs
2024
Carbon Capture, Utilization, and Storage (CCUS) refers to the process of capturing and separating CO2 from emission sources such as energy utilization and industrial processes, or directly from the...
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Overview of hydrogen storage and transportation technology in China
2023
In response to the global climate change and the need for green and low-carbon development, hydrogen energy has been recognized as a clean energy source that can achieve carbon neutrality unlike fossil...
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Genesis and energy significance of natural hydrogen
2023
H2 is clean energy and an important component of natural gas. Moreover, it plays an irreplaceable role in improving the hydrocarbon generation rate of organic matter and activating ancient source rocks...
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Pore structure characterization and its significance for gas adsorption in coals: A comprehensive review
2022
The coal reservoir has multifaceted and hierarchical characteristics influenced by heterogeneity of the pore and fracture networks. The coal pore including micropore, mesopores and macropores determines...
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Drilling fluids for shale fields: Case studies and lessons learnt
2024
In recent years, Shale gas has been the fastest-growing energy source in the world. In USA, shale gas now contributes to more than 60 % of natural gas supply. In China, annual shale gas production climbed...
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Hydrogen's organic genesis
2024
Natural hydrogen exploration has been restricted in scope due to the predominance in thinking that various rock interactions with water in cratonic settings offer the best natural hydrogen sources....
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Methods for identifying complex lithologies from log data based on machine learning
2023
The sedimentary environment of the marine-continental transitional facies leads to complex reservoir lithologies characterized by rapid changes in lithology, the presence of thin interbeds, and strong...
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Geology still matters – Unconventional petroleum system disappointments and failures
2021
Machine learning and factory drilling approaches have increased efficiency and improved the commerciality in many tight plays. However, not all the original resource estimates and potential opportunities...
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Identification of natural fractures in shale gas reservoirs using fracture signature function and machine learning models
2024
Identifying fractures is important for optimizing recovery and enhancing oil recovery techniques. Identifying natural fractures using FMI and cores is expensive and unavailable for all wells. Therefore,...
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Molecular simulation of the impact of surface roughness on carbon dioxide adsorption in organic-rich shales
2024
This study investigates the adsorption behavior of carbon dioxide in organic nanopores with different surface roughness. The nanopores are constructed by sinusoidally corrugating the graphite slit pore...
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Feature selection in GC-MS, NMR and MALDI-TOF spectra of tar sand bitumen
2023
Expectations from unconventional reservoirs are often overly optimistic when estimation criteria are transferred from one location to another but some of the many important elements of petroleum systems...
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A novel method for quantitative evaluation of oil content and mobility in shale oil reservoirs by NMR logging: a case study of the inter-salt shale oil in the Jianghan Basin
2024
The evaluation of oil content and mobility in shale oil reservoirs is the key to the optimization of the "sweet spot" of shale reservoirs and the evaluation of available resources. In order to address...
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Relationship between box-counting fractal dimension and properties of fracture networks
2024
Due to the capacity to quantify the complexity of a fracture network, fractal dimension (D) is widely applied in analyzing fracture network-related issues, such as connectivity and permeability. While...
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Microscopic pore-throat classification and reservoir grading evaluation of the Fengcheng formation in shale oil reservoir
2024
Different basins in China have proposed various reservoir grading standards for shale oil. Based on a comprehensive understanding of the basic characteristics of the shale oil reservoir in the Mahu...
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Prospect evaluation of CO2 sequestration in coal beds of Anambra Basin, Nigeria
2023
Sequestrating carbon dioxide (CO2) for enhancing methane production from coal beds is one of the approaches being advanced to reduce the concentration of CO2 in the Earth's atmosphere. Some aspects...
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Photovoltaic mini-grid incorporation: The panacea for electricity crisis in sub-Saharan Africa
2024
The electrification rate in sub-Saharan Africa, standing at 45% in 2018, is significantly lower when compared with global benchmarks. The 600 million individuals lacking access to electricity constitute...
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Heat production rate of deep rocks in Bohai Bay Basin and its relationship with terrestrial heat flow
2024
The vertical distribution of rocks’ radioactive heat production rate in the continental crust is the basis for exploring the deep thermal structure and explaining terrestrial heat flow distribution...
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Impact of fracturing fluid retention and flowback on development effect after large scale fracturing in shale oil wells: A case study from the shale oil of Chang 7 Member, Yanchang Formation, Ordos Basin
2024
In order to reveal the impact of fracturing fluid retention and flowback on the development effect after large-scale fracturing in shale oil wells, and to formulate a reasonable flowback policy, this...
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Reservoir characteristics and gas production potential of deep coalbed methane: Insights from the no. 15 coal seam in shouyang block, Qinshui Basin, China
2022
Considering the large burial depth and unclear coalbed methane (CBM) development potential of the No. 15 coal seam in the Shouyang block in the northern Qinshui Basin, this study investigated the characteristics...
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Improved total organic carbon convolutional neural network model based on mineralogy and geophysical well log data
2021
Unconventional resources, such as shale oil and gas, are currently regarded as an essential resource in the face of depleting conventional hydrocarbon reserves. In line with this, the accurate determination...
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Geological characteristics and resources potential of shale oil in Chang 7 Member of Upper Triassic Yanchang Formation in Fuxian area, southern Ordos Basin, western China
2023
Ordos Basin is rich in shale oil resources. Fuxian area in the southern Ordos Basin is an important area where Sinopec is expected to make a breakthrough in the exploration and development of lacustrine...
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Diagenesis of tight sandstone and its influence on reservoir properties: A case study of Fuyu reservoirs in Songliao Basin, China
2023
Diagenesis is the primary cause of the densification of the Fuyu reservoir in Sanzhao sag, Songliao Basin. In this paper, the types of diagenesis, the influence of diagenesis on reservoir physical properties...
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A short review of recent studies on applying low salinity water injection in unconventional reservoirs: An experimental approach
2022
The primary production from unconventional reservoirs remains almost low, so applying enhanced oil recovery (EOR) methods is inevitable. Due to the different structures of these reservoirs from conventional...
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Recycled waste groundnut oil: A potential feedstock for green energy/biodiesel synthesis
2024
This work focuses on the recycling of waste groundnut oil as a potential feedstock for biodiesel production using activated coconut husk as a regenerating agent. The coconut husk was functionalized...
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