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Methane Modeling: Predicting the Inflow of Methane Gas into Coal Mines. Quarterly Technical Progress Report, July 1, 1981-September 30, 1981.

DE82010122

Publication Date	1981
Personal Author	Boyer, C. M.; Morrison, H. L.; Pavone, A. M.; Schwerer, F. C.
Page Count	102
Abstract	Salient features of the third quarterly report are the following: (1) Nearly all of the articles identified in the computer-assisted literature survey have been obtained, however, a few key references, notably from foreign sources have not yet been received. These articles have been cataloged in a computerized data-base management system. A current listing of the total bibliography, arranged alphabetically by first author, is presented with this report. The bibliography will be updated as new literature is acquired throughout the course of the project. This material is a continuation of material ending on page I.1-4 of the previous report. (2) The mathematical models for relative permeability and capillary pressure have been extended to account for vertical equilibrium between the water and methane gas phases. The vertical equilibrium model provides an approximate method for taking into account variations in fluid saturations along a direction (nominally along the seam- or dip-normal) perpendicular to the primary flow direction. This model is described in new Section II.5-1. (3) A mathematical procedure for dealing with a moving boundary in a one-dimensionl model has been developed and tested. This procedure is outlined in an extension to Section II.1 beginning on page II.1-8. The variables describing the moving boundary are presented in the context of coal mine ventilation parameters in Section II.6. (4) This report also includes some corrections to sections submitted with the first two quarterly reports.
Keywords	Coal seams Coal deposits Degassing Methane Coal mining Underground mining Mathematical models Information systems Data base management Porosity Permeability Fluid flow Calculation methods Bibliographies Adsorption Desorption Two-phase flow ERDA/012000
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	United States Steel Corp., Monroeville, PA. Research Lab.; Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	198221
Contract Number	AC22-80PC30123

Methane Modeling: Predicting the Inflow of Methane Gas into Coal Mines. Quarterly Technical Progress Report, July 1, 1981-September 30, 1981.

Methane Modeling: Predicting the Inflow of Methane Gas into Coal Mines. Quarterly Technical Progress Report, July 1, 1981-September 30, 1981.
DE82010122

Publication Date	1981
Personal Author	Boyer, C. M.; Morrison, H. L.; Pavone, A. M.; Schwerer, F. C.
Page Count	102
Abstract	Salient features of the third quarterly report are the following: (1) Nearly all of the articles identified in the computer-assisted literature survey have been obtained, however, a few key references, notably from foreign sources have not yet been received. These articles have been cataloged in a computerized data-base management system. A current listing of the total bibliography, arranged alphabetically by first author, is presented with this report. The bibliography will be updated as new literature is acquired throughout the course of the project. This material is a continuation of material ending on page I.1-4 of the previous report. (2) The mathematical models for relative permeability and capillary pressure have been extended to account for vertical equilibrium between the water and methane gas phases. The vertical equilibrium model provides an approximate method for taking into account variations in fluid saturations along a direction (nominally along the seam- or dip-normal) perpendicular to the primary flow direction. This model is described in new Section II.5-1. (3) A mathematical procedure for dealing with a moving boundary in a one-dimensionl model has been developed and tested. This procedure is outlined in an extension to Section II.1 beginning on page II.1-8. The variables describing the moving boundary are presented in the context of coal mine ventilation parameters in Section II.6. (4) This report also includes some corrections to sections submitted with the first two quarterly reports.
Keywords	Coal seams Coal deposits Degassing Methane Coal mining Underground mining Mathematical models Information systems Data base management Porosity Permeability Fluid flow Calculation methods Bibliographies Adsorption Desorption Two-phase flow ERDA/012000
Source Agency	Technical Information Center Oak Ridge Tennessee
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	United States Steel Corp., Monroeville, PA. Research Lab.; Department of Energy, Washington, DC.
Document Type	Technical Report
NTIS Issue Number	198221
Contract Number	AC22-80PC30123