A5020295862- Rock Mechanics and Modeling
- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Coal Properties and Utilization
- Drilling and Well Engineering
- Landslides and related hazards
- Geoscience and Mining Technology
- Geochemistry and Geologic Mapping
- Geotechnical Engineering and Analysis
- Geomechanics and Mining Engineering
- Grouting, Rheology, and Soil Mechanics
- NMR spectroscopy and applications
- earthquake and tectonic studies
- Geotechnical and Geomechanical Engineering
- Geological and Geochemical Analysis
- Tunneling and Rock Mechanics
- Seismic Imaging and Inversion Techniques
- Geotechnical Engineering and Underground Structures
- Concrete and Cement Materials Research
- High-pressure geophysics and materials
- Methane Hydrates and Related Phenomena
- Soil Geostatistics and Mapping
- Geophysical Methods and Applications
- Geological Studies and Exploration
- Building materials and conservation
Guizhou Minzu University
2018-2025
Guizhou University
2018-2025
University of Newcastle Australia
2020
The micromechanical properties of organic matter (OM) and pore structures in the over-mature stage are crucial for determining shale reservoir quality assessing gas resource potential. However, there is still debate about influence OM on micro-mesopore shale. In this study, cores from Niutitang Formation have been specifically chosen isolation, adsorption testing, atomic force microscopy examination, focused ion beam scanning electron (FIB-SEM) analysis to assess structures. findings...
In this study, four types of coal samples (complete, parallel fracture, vertical and inclined fracture) were prepared, mining stress paths designed. Cyclic loading–unloading seepage tests conducted on to study the evolution characteristics. Evolution characteristics permeability porosity investigated. The cycle factor was introduced research effect number permeability. Stress sensitivity coefficients obtained by fitting curves. relationship between analyzed. Results indicate that enhancement...
Multistage hydraulic fracturing leads to prolonged interactions between shale reservoirs and slickwater fluids, resulting in changes the pore structure micromechanical properties of shale. However, systematic studies impact mineral composition on remain limited. This research investigates effects fluids with different compositions, focusing Wufeng-Longmaxi northern Guizhou, China. Comprehensive analyses were conducted core samples before after immersion fluid, utilizing various testing...
Abstract The existence of bedding in shale plays an important role the physical properties and destruction processes shale. In order to study failure mechanism with different dip angles under coupling seepage stress, uses RFPA2D‐Flow software advance seepage‐stress numerical simulation for seven groups direction Research shows that (1) compressive strength elastic modulus are significantly affected by directions. can be observed apparent anisotropy change angle α; increase α as a whole. (2)...
Natural fractures, like tectoclases, are essential in the formation of shale gas reservoirs and have been focus study for development. Tectoclases provide most storage space largely controlled by paleo-tectonic stress field Niutitang Formation, northern Guizhou area, China. An accurate prediction development distribution tectoclases is great significance to exploring developing sweet spots area. Based on geological structure evolution fracture characterization, this focused factors that...
Abstract The mechanical properties and failure modes of shale that contains bedding were analyzed under coupled seepage pressure stress. In the numerical model, seven sets samples with different dip‐bedding values considered, a seepage‐stress coupling simulation was carried out. results showed compressive strength exhibited obvious anisotropy increase in angle, decreased an osmotic pressure. elastic modulus increasing trend while had little effect on shale. also weak significant impact mode....
Joints with different angles in rocks have significant impacts on their fracture mechanisms. In this study, scanning electron microscopy (SEM), energy-dispersive spectrometry (EDS), and microcomputed tomography (Micro-CT) were used to study the microstructure characterization of sandstone, digital image processing (DIP) technology has been applied for sandstone mesostructures. DIP combined RFPA2D numerically investigate mesoscale behaviors jointed dip angles. On basis box dimension theory...
The spatial distribution of ore-forming element grades typically exhibits strong nonlinear characteristics as a result continuous geological processes. trend change in ore grade sequences is crucial indicator the degree enrichment an deposit. Therefore, quantitative evaluation elements holds great significance for understanding processes well exploration. In this work, based on principles fractal theory, MATLAB-based program to calculate dimensions was developed, and analysis conducted gold...
Abstract A significant controlling factor for gold mineralisation is the tectonic stress field, and fractures formed under its action are migration channels ore-holding spaces of ore-forming fluids, which often directly control accumulation fluids. Therefore, performing quantitative prediction research on distribution in Guizhou, Lannigou deposit order to identify potential fluid flow pathways utmost importance ore prospecting practical. In this study, a 3D geological entity model was...
In the present study, a numerical model was established to investigate influence of prefabricated cracks different dimensions on mechanical properties and damage evolution irregular sandstone. To this end, were considered in analysis, real mesoscopic structure inside sandstone characterized using microcomputed tomography (micro-CT) scanning digital image processing technology. Combined with rock failure process analysis system, effects its macroscopic behavior studied. The fissure field...
Water saturation of shale reservoirs significantly influences the permeability and compressibility propped fractures. This study focused on Longmaxi Formation reservoir in northern Guizhou, China, where water–saturated under varying gas confining pressures was measured. A model for proppant embedment compaction deformation developed validated against experimental results. examined supported fractures considering water–rock interactions elucidated intrinsic relationship between water...
To analyze the effect of small faults in working face on coal and gas outbursts, outburst accident 21431 was studied with 3DEC numerical simulation method, main research contents were change laws both stresses at fault overburden strata movement rate zone which drop height strike designed into different groups. The results show that risk slip increases advancing face. In addition, there is a positive correlation between throw. along rising throw, energy transferred to seam from surrounding...