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Study on Migration Law of Coal-bed Methane under the Influence of Temperature

Author: KangYu
Tutor: LiangBing
School: Liaoning Technical University
Course: Fluid Mechanics
Keywords: coal-bed methane temperature penetration permeability seepage field
CLC: O357.3
Type: Master's thesis
Year: 2008
Downloads: 318
Quote: 1
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Abstract


Coal-bed methane is a new clean energy in the 21st century and whose exploration and development is bound the most promising and realistic way to replace conventional natural gas resources. It is not very comprehensive in previous studies on the impact of temperature to the migration law of coal-bed methane,the article got the relationship between coal-bed methane penetration and temperature through experiment, established a mathematical model of coal-bed methane seepage based on the previous studies results, Specific activities include the following:1、Analysed the storage conditions of the coal seam gas. Compared the difference of coal-bed methane with conventional gas from the type of gas reservoir, gas source, reservoir lithology, pore structure, flow mechanism, reservoir characteristics and the output mechanism.2 Introduced the three stages coal-bed methane generated: Analysed the use of physical absorption, chemical absorption in the coal-bed methane adsorption ; Introduced the factor of temperature to migration law of coal-bed methane3 Measured the coal-bed methane flow under different pressure and temperature on-site experiments,got the relationship of coal-bed methane permeability and temperature through formula、data relationship of coal-bed methane penetration and temperature、got the formula of coal-bed methane penetration and temperature: S(x)=a0+a1x+a2x2 through curve fitting as well as the smallest two-way fitting way of numerical analysis4 Derived the temperature field, seepage field, deformation field equation of coal rock as well as boundary conditions and initial conditions.5 Established a simple storage of coal-bed methane migration model using Comsol Multiphysics software.Got the figure of temperature distribution and relationship between temperature and permeability under certain boundary conditions, verified the derived coupling mathematical model simulated the real flow in coal-bed methane body is feasible

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CLC: > Mathematical sciences and chemical > Mechanics > Fluid Mechanics > Viscous fluid > Seepage
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