Methane desorbing from coal - anthracite #1

Video microscopy of desorption of gas from coal. The sample was a simulated coal seam reservoir containing coal, water and gas that had been brought to equilibrium over time. Equilibrium state was confirmed by measuring the gas concentration in the fluid over time using WellDog's Reservoir Raman system. The sample cell was subsequently depressurized until the critical desorption pressure and bubble point were reached. Subsequent depressurization resulted in gas evolution from the coal and fluid. In this case, the gas was pure methane, the fluid was RO water, and the coal was a Pennsylvania anthracite. Visit us at www.welldog.com to learn more.

Category:

Science & Technology

Tags:

• coal
• gas
• methane
• reservoir
• laboratory
• Raman
• video
• microscopy
• spectroscopy
• bubbles
• natural