Effect of Organic Matter and Thermal Maturity on Methane Adsorption Capacity on Shales from the Middle Magdalena Valley Basin in Colombia

High-pressure methane adsorption isotherms were measured on five shale core samples obtained during exploratory drilling from three boreholes located in the Colombian Middle Magdalena Valley Basin. The experiments were carried out at 50 and 75 °C and for pressures ranging up to 3.5 MPa under dry conditions through the use of a homemade manometric setup. The effect of the total organic carbon (TOC) content, thermal maturity, clay content, and...