Thermal Analysis and Infrared Spectroscopic Study of Clay Minerals in Petroleum Reservoir Rocks of Naharkatia Oil Field

Abstract

The application of infrared and thermal analysis methods for identification of clay minerals in petroleum reservoir rocks of Naharkatia oil field has been investigated. Thermal analysis provided little information regarding the nature of clay minerals unless most of the heavier non-clay materials of the reservoir rocks were separated. Clay minerals in the reservoir rocks without separation of the non-clay materials could however be identified by the infrared technique. Both thermal and infrared analysis revealed presence of illite and chlorite type clay minerals in Barail reservoir rocks of Naharkatia oil field. The findings were confirmed by X-ray powder diffraction method.