"Coalbed methane has rapidly gained popularity as an alternate, economically viable energy resource. In order to effectively exploit this resource, an urgent need exists to develop analytical techniques that provide a quick and reliable method to determine gas content of various coals. Although a USBM method is generally used with varying degrees of precision to determine gas yields, the lack of an absolute industry standard for this application leads to inconsistent and inconclusive results. The analytical tools available today include experimental methods that involve monitoring of desorbed gases from coal samples over a period of time. Empirical gas content relationships are also used to determine the volume of gas contained in coalbeds. The problem with these methods is that they are either too time consuming (desorption experiments) or unreliable (empirical methods).
The following work is to serve as a first step to exploring a novel approach for estimating the methane content of coal formations by using thermal analysis. Thermogravimetric analysis (TGA) shows some promise in overcoming the limitations of current techniques. This technique involves heating a coal sample and recording the evolution of gas as a function of temperature; a mass spectrometer (MS) coupled to the TGA apparatus can be used to determine compositions of the gases released at different temperatures, thus providing a potentially more reliable method of determining gas volumetrics in a fraction of the time used by desorption experiments. Advantages and shortcomings of the above method are discussed along with recommendations for further refining the technique"--Abstract, page iii.
Numbere, Daopu Thompson, 1951-
Ludlow, Douglas K.
Geosciences and Geological and Petroleum Engineering
M.S. in Petroleum Engineering
University of Missouri--Rolla
x, 51 pages
© 2003 Siddhartha Nahar, All rights reserved.
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Coal -- Analysis
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Electronic access to the full-text of this document is restricted to Missouri S&T users. Otherwise, request this publication directly from Missouri S&T Library or contact your local library.http://merlin.lib.umsystem.edu/record=b5086260~S5
Nahar, Siddhartha, "Thermogravimetric analysis of coalbed methane: A novel approach towards quantifying coalbed methane reserves" (2003). Masters Theses. 2422.
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