Dissertation > Astronomy,Earth Sciences > Geology > Of ore deposits > Deposit classification > Fuel deposits > Coal

Research on Inflow Performance Relationship of Coalbed Methane Extraction

Author GaoQiuHong
Tutor LiMingZhong
School China University of Petroleum
Course Oil and Gas Field Development Project
Keywords CBM Percolation mechanism Numerical Simulation Inflow Typical curve
CLC P618.11
Type Master's thesis
Year 2010
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Based on extensive literature research and analysis compares the current foreign key dynamic model of coalbed methane reservoir porosity and permeability ; detailed summary of coalbed methane reservoirs and conventional gas reservoirs in the geological origin and mechanism of reservoir and exploitation of differences ; surface for methane from the coal matrix to the output shaft experienced desorption , diffusion and percolation of these three complex flow processes , selection Shi and Durucan established coalbed methane reservoir porosity and permeability dynamics model - SD model , the establishment of three-dimensional , dual porosity , unbalanced intended steady state , considering the effect of matrix shrinkage , gas-water two-phase fluid flow mathematical model of CBM ; using fully implicit methods, and the use of Matlab language of the source code , the values ??obtained for the discrete model is solved ; through the Qinshui Basin well Fanzhuang Block FZ318 develop dynamic simulation , and the computational results are compared with field data to verify the reliability of the model . At the same time , according to the actual geological conditions Qinshui basin , select a set of benchmarks , to establish a conceptual model of coal reservoir , the use of the preparation of a good CBM reservoir numerical simulation program , drawn early mining CBM wells inflow (IPR) curve , and analysis of the various parameters on the IPR curve. Finally, a single well prepared coalbed methane reservoir simulation program to try to develop a set that reflects the unique occurrence transport mechanism CBM CBM exploitation typical curve to simulate the production of coalbed methane reservoir dynamics , provides for the development of coalbed methane a simple and effective tool.

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