A5100365898- Coal Properties and Utilization
- Rock Mechanics and Modeling
- Hydrocarbon exploration and reservoir analysis
- Underwater Vehicles and Communication Systems
- Robotics and Sensor-Based Localization
- Geoscience and Mining Technology
- Underwater Acoustics Research
- Geophysical Methods and Applications
- Diet and metabolism studies
- Inertial Sensor and Navigation
- NMR spectroscopy and applications
- Metal Extraction and Bioleaching
- Synthetic Aperture Radar (SAR) Applications and Techniques
- Nutrition and Health in Aging
- Geophysics and Sensor Technology
- Maritime Navigation and Safety
- Indoor and Outdoor Localization Technologies
- Antenna Design and Optimization
- Advanced SAR Imaging Techniques
- Optical Systems and Laser Technology
- Coal and Its By-products
- Methane Hydrates and Related Phenomena
- Clinical Nutrition and Gastroenterology
University of South China
2025
China University of Mining and Technology
2020-2024
University of Shanghai for Science and Technology
2024
China National Offshore Oil Corporation (China)
2024
National University of Defense Technology
2023
Wuhan Ship Development & Design Institute
2015-2023
CO2-enhanced coalbed methane recovery (CO2-ECBM) has been demonstrated as an effective enhanced oil (EOR) technique that enhances the production of (CBM) while achieving goal CO2 sequestration. In this paper, grand canonical Monte Carlo simulation is used to investigate dynamic mechanism CO2-ECBM in anthracite pores. First, pore containing both organic and inorganic matter was constructed, adsorption diffusion characteristics CH4 coal pores under different temperature pressure conditions...
The law of specific surface energy variation during the adsorption process is an important basis for studying mechanisms coal gas adsorption. Based on theory energy, eight samples with different ranks were analyzed using isothermal experiment at three temperatures (30, 40, and 50 °C) six pressures (0.1, 0.2, 0.6, 1.0, 1.4, 1.8 MPa). Then, single-layer model multilayer used to calculate process. Just like capacity, it clear that inversely proportional temperature pressure. difference between...
Coalbed methane (CBM), as an associated resource of coal, has important strategic energy significance. However, most reservoirs in China have low permeability, which poses challenges for CBM mining. Based on the background acidification to increase production, macroscopic mechanics seepage, mesoscopic morphology observation, and microscopic pore measurement experiments coal under acid treatment were carried out, influence macro-meso-micro characteristics insights into enhancing revealed. It...
This study focuses on coalbed methane (CBM) wells in high-ranking coal seam as the research subject. Considering influence of effective stress and matrix shrinkage, a comprehensive permeability calculation model for CBM reservoirs is established. Based this model, variations pressure during well production are quantified. By integrating static geological parameters, finely classified classification achieved using self-organizing map (SOM) neural network. Subsequently, an analysis dynamic...
Methane gas is mainly present in coal two forms: free and adsorbed. There are a large number of closed pores inside the coal, which makes it difficult to measure content coal. Therefore, studying nanoscale great importance for control. To study pore structure characteristics with different deformation degrees analyze volume fraction various samples were analyzed by low-temperature liquid nitrogen adsorption method (LT-N2GA), carbon dioxide method, small-angle X-ray scattering (SAXS). The...
In this paper, an experimental study of the variation resistivity coal samples in different bedding directions at 1 MHz frequency was performed by establishing system for testing under triaxial stress. The low-pressure nitrogen gas adsorption (LP-N 2 GA) experiment and scanning electron microscopy (SEM) were obtained to analyze pore-fracture structural characteristics influence on anisotropy. Furthermore, fundamental cause anisotropy is expounded systematically. results show that loaded...
Underwater terrain-matching navigation technologies have become a popular topic for the high-precision positioning and of autonomous underwater vehicles. This paper proposes an method based on Markov random field model, which is real-time terrain data obtained using multi-beam echo sounder. It focuses strong correlation between adjacent data, can improve adaptability matching accuracy. Playback simulation tests were conducted actual sea trial results showed that proposed has good...
Abstract From the standpoint of complex marine environments relative to underwater acoustic signal propagation, application multi-beam systems for filtering and processing sounding data is critical. However, currently existing automatic methods estimate data, which involve several calculations require respective computer possess significant capabilities. In this study, raw are measured using an interferometer echo sounder, characteristics noise analyzed. The discontinuous; however, accurate...
The error coefficients calibration of inertial measurement units (IMUs) is an essential step for strapdown navigation systems (SINSs), and the system-level most prevalent method. To satisfy need high-precision attitude in large-scale shipboard radar, single axis laser gyro SINSs can be directly fitted on radar spins with it, feeding back information real time to determine radar's direction. pitch roll axes only rotate from -45° +45°, however heading may revolve at any angle by rotating base....
Coal porosity prediction is normally based on the matrix deformation caused by effective stress and adsorption/desorption effect. However, gas adsorption layer attached to coal pore surface occupies volume ultimately reduces porosity. Therefore, dynamic evolution result of variation. According basic definition porous media theory, a model was developed explicitly consider influence layer. Furthermore, effects temperature, pressure, swelling effect, were analyzed. The verified with field data...