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Measurement of adsorption phase densities with respect to different pressure: Potential application for determination of free and adsorbed methane in coalbed methane reservoir by Dameng Liu; Yanbin Yao; Yanhai Chang is a Engineering article available to read on EtoBox.
What is Measurement of adsorption phase densities with respect to different pressure: Potential application for determination of free and adsorbed methane in coalbed methane reservoir about?
Evaluation of free and adsorption gas in the in-situ reservoir is extremely significant for the exploration and production of coalbed methane. The adsorbed gas content is commonly estimated based on isothermal adsorption experiments from the volumetric or gravimetric methods that are essentially measurements of the excess adsorption amount, but not the absolute adsorption amount. To evaluate the in-situ gas content, the excess adsorption amount must be calibrated as the absolute adsorption amount through mathematical correction. However, the theoretical base for these mathematical assumptions is either unreasonable or questionable, which limited the application of these methods. We conducted the excess isothermal adsorption experiments on a coal core plug sample, and meanwhile used NMR to quantify the free and adsorbed methane, and to obtain absolute adsorption isotherms, and then to obtain the accurate values of the in-situ densities and volumes of adsorbed phase methane during the gas adsorption process. Results show that the adsorbed phase methane density increased with pressure, showing a Langmuir-type function, while the density decreased with temperature. The adsorbed phase m
Who reads Measurement of adsorption phase densities with respect to different pressure: Potential application for determination of free and adsorbed methane in coalbed methane reservoir?
It is typically read by researchers, students, and practitioners in Engineering.
- Author
- Dameng Liu; Yanbin Yao; Yanhai Chang
- Publisher
- Elsevier BV
- Published
- 2022
- Language
- EN
- Field
- Engineering (Physical Sciences)