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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2023
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Water-methane interactions in coal: Insights from molecular simulation
2023
Water distribution can affect the storage and transport of methane in coal. There are many reports involving the distribution of water and methane in coal, but the microscopic mechanism of water-methane...
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Sensitivity and application of pseudo-steady-state constant for refracturing horizontal wells with fracture reorientation in anisotropic tight oil reservoirs
2023
Fetkovich or Blasingame type rate decline analysis is a common and practical method to obtain reservoir parameters and evaluate well productivity. Pseudo-steady-state constant is an indispensable parameter...
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Fluid mobility calculation based on improved window parameters optimized S-transform for reservoir delineation
2023
Time-frequency analysis is an important tool for seismic signal analysis and time-frequency resolution is the key to high-precision reservoir prediction. The time-frequency method of conventional S-transform...
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Numerical investigation of energy dissipation when shear wave passing through interface in rock mass
2023
The investigation of seismic wave propagation across discontinuous rock masses is of great importance for solving earthquake engineering problems. Although the parameters affecting the propagation of...
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Characterization of natural fractures in tight sandstone reservoirs in Yuanba area, northern Sichuan Basin
2023
Natural fractures are quite important for the high and stable production of tight sandstone gas reservoirs. However, it is commonly difficult to accurately characterize their distribution in tight sandstone...
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Fracture prediction of tight sandstone reservoirs using outcrops and log curve-based extremum method: A case study of the Chang 7 Member of the Yanchang Formation in Block X, Ordos Basin
2023
The lack of seismic data and special log data on the Chang 7 Member of the Yanchang Formation in Block X of the Ordos Basin poses a major challenge to the study of the development characteristics and...
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Study on dynamic and static elastic moduli of shale oil by different loading methods
2023
Experiments on the dynamic and static elastic parameters under distinct loading conditions help clarify the effects of loading rate and strain amplitude on dynamic and static elastic moduli, and gain...
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Facies, textural and geochemical evaluation of the post-Santonian sandstones in the Bida basin, Nigeria: Implications for control on hydrocarbon sandstone reservoir characteristics and paleoenvironments
2023
Using a combination of field observations, textural analysis, scanning electron microscopy (SEM), mineralogical X-ray diffraction (XRD), X-ray fluorescence spectroscopy (XRF), and thin-section analysis,...
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Genetic mechanism of multi-scale sedimentary cycles and their impacts on shale-oil distribution in Permian Lucaogou Formation, Jimusar Sag, Junggar Basin
2023
Complex lithofacies of Lucaogou Formation in Jimusar Sag promote strong heterogeneity of oil distribution in fine grained sedimentary rocks. It is of great significance to define the formation mechanism...
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Geochemical characteristics and enrichment regularity of bedrock reservoir in the central paleo-uplift, north songliao basin
2023
The Central Paleo-Uplift is a key target for exploration in the deep layers of the Songliao Basin. Our study focused on the systematic analysis of the forming conditions and accumulation patterns of...
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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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Evaluation method for in-situ stress orientation using wave anisotropy and electrical imaging logging data: A case study from the Longmaxi Formation in Yongchuan area, Sichuan Basin
2023
In-situ stress orientation is a key parameter in studying oil and gas migration and accumulation, analyzing the stability of borehole wall during drilling, carrying out horizontal well design, fracturing...
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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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An investigation of data analysis method for hydraulic fracturing based on the water hammer effect
2023
Hydraulic fracturing plays a crucial role in the development of unconventional resources, and assessing fracture geometry is a fundamental aspect of hydraulic fracturing analysis. Among the various...
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Modeling wellbore instability in hot dry rock under various temperature conditions
2023
Hot Dry Rock (HDR) is a renewable energy source that has garnered attention due to its abundant reserves, widespread distribution, and consistent energy supply. However, the injection of cold water...
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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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Study on calculation of transversely isotropic dynamic rock mechanical parameters and conversion model between dynamic parameters and static parameters
2023
The shale oil reservoirs in the Jimsar Sag are strongly heterogeneous. Therefore, it is of practical significance to relate the dynamic elastic stiffness to the static elastic stiffness under the assumption...
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Prediction of glutenite reservoirs using an adaptive Bayesian seismic inversion in the slope zone of Mahu Depression in Junggar Basin, NW China
2022
The slope zone of Mahu Depression in Junggar Basin contains the largest glutenite oilfield discovered over the world so far. However, because of the mechanism of near-source sedimentation and rapid...
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Analyzing major controlling factors of shale oil 'sweet spots' in the Chang-7 member of the Triassic Yanchang Formation, Ordos Basin
2022
The Chang-7 Member of the Upper-Triassic Yanchang Formation has favorable geological conditions (e.g., extensive distribution of source rock, broad distribution of fine-grained sand bodies, stable structure,...
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Error correction of vitrinite reflectance in matured black shales: A machine learning approach
2022
Vitrinite reflectance (Ro) analysis is a maturity indication parameter for oil or gas prone source rocks in evaluating hydrocarbon potentials. As a result of challenges in Ro calculations from pyrolysis...
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Geochemical characteristics and mechanisms of densification of pre-Jurassic crude oil in the Tainan Sag, Turpan-Hami Basin, China
2022
Large volumes of heavy oil were distributed in the pre-Jurassic strata of Tainan sag, Turpan Hami Basin, China. The geochemical characteristics and origins of heavy oil are of great significance to...
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