A5028846873- Coal Properties and Utilization
- Rock Mechanics and Modeling
- Hydrocarbon exploration and reservoir analysis
- Hydraulic Fracturing and Reservoir Analysis
- Geophysical Methods and Applications
- Methane Hydrates and Related Phenomena
- Mineral Processing and Grinding
- Geoscience and Mining Technology
- NMR spectroscopy and applications
- Drilling and Well Engineering
- Tunneling and Rock Mechanics
- Flow Measurement and Analysis
- Landslides and related hazards
- Innovative concrete reinforcement materials
- Fatigue and fracture mechanics
- Coal and Its By-products
- Geotechnical and Geomechanical Engineering
- Structural Behavior of Reinforced Concrete
- Seismic Waves and Analysis
- Groundwater flow and contamination studies
- Advanced Fiber Optic Sensors
- Geomechanics and Mining Engineering
- Concrete Corrosion and Durability
- Earthquake Detection and Analysis
- Climate change and permafrost
China University of Mining and Technology
2020-2023
The University of Queensland
2013-2020
K.N.Toosi University of Technology
2010
Abstract Gas shales act as both the source rock and reservoir for petroleum. One of important characteristics is its low permeability, making gas production difficult. Although economic shale has been achieved through horizontal drilling multistage hydraulic fracturing, permeability still one critical parameters in evaluation a play. In present work, experimental measurement anisotropic determined using cubic sample triaxial cell. Anisotropic was measured at series pressures confining...
Abstract Liquid nitrogen freeze–thaw (LNFT) is an environmentally-friendly permeability enhancement technology. There are significant differences between shallow and deep coal in their composition stress history. Therefore, it necessary to reveal the difference impact of LNFT on multistage gas flow coal. In this paper, were revealed from perspective a multiscale structure evolution, evolution analyzed compositions Nuclear magnetic resonance method was used characterization. As for...
Liquid nitrogen freeze-thaw fracturing has attracted more and attention in improving the coal reservoir permeability. In order to reveal impact of liquid on multiscale structure deep coal, evolution law shallow samples from same seam Qinshui coalfield during cycling was investigated using NMR <math xmlns="http://www.w3.org/1998/Math/MathML" id="M1"> <msub> <mrow> <mi>T</mi> </mrow> <mn>2</mn> </msub> </math> spectrum, NMRI, SEM. The connectivity between mesopores macropores is improved after...
The extraction of low-permeability coalbed methane (CBM) has the dual significance energy utilization and safe mining. Understanding hydraulic fracturing mechanism is vital to successful development CBM. Therefore, it important improve law fracture propagation in coal rigorously study influencing factors. In this paper, laboratory experiments numerical simulation methods were used investigate reservoir with natural fractures. results show that maximum minimum horizontal situ stress...
The closed pores in coal seams influence the storage of coalbed methane. investigation characteristics for coals is great significance improving production methane and revealing mechanism gas outburst. However, due to limitations analytical techniques, evolution with different ranks are not sufficiently understood. In this paper, eight samples were collected characterized by small-angle X-ray scattering (SAXS) low-temperature nitrogen adsorption (LTNA). open various studied, during...
Coal mass strength estimation has attracted broad attentions for decades. Investigating the effect of scale and anisotropy on Uniaxial Compressive Strength (UCS) via P-wave velocity is crucial in upscaling lab-obtained correlation to coal evaluation. Microstructures were considered as major impact factors difference mechanical properties coal. Thus, microstructure correlated influence specimen sizes angles UCS based primary wave (P-wave) investigated here. Specimens with four diameters (25...
Abstract During gas production, coalbed experiences compaction over time when effective stress increases as a result of pressure depletion triggered by escaping from micropores through desorption and diffusion. It is deemed that time-dependent deformation (compaction creep) deterioration coal structure lead to decrease in permeability. Alteration rate permeability depends on factors such properties, pore pressure, time, temperature. Thus far, little studies have been conducted investigate...
This paper presents the results of a comprehensive study on effectiveness deploying fibre-optic based Distributed Temperature Sensing (DTS) technology in pre-mining gas drainage boreholes. The aim is to identify changing thermal characteristics flow along length borehole order provide step change way that managed and reported. Current techniques used coal mining industry do not any information where originated how effective throughout large region. research demonstrates ability "signature"...
Interpretation of fluid flow temperatures collated by fiber-optic DTS systems used in pre-drainage boreholes for performance assessment is investigated through measuring a mechanistic simulator. The results show some conditions can be simulated.