EVALUATION AND CHARACTERISATION OF OIL PRODUCTION FROM KEROGEN IN BIDA BASIN

Abstract

ABSTRACT Production and Characterization of oil from kerogen obtained from Bida Basin. In this study, kerogen from Bida Basin was used as a source of hydrocarbon for the production of oil and gas. Different thermal characterization such as Thermogravimetric Analysis (TGA) and Rock Eval (R.E) pyrolysis were employed. TGA was studied for the purpose of determining the thermal decomposition of kerogen. The decomposition of kerogen occurs at temperature of 308.28-471.68 oC. Thermal breakdown of the kerogen content using TGA and R.E takes place mainly at the temperature of 300 to 600 oC. The analysed kerogen sample from R.E have Total Organic Carbon (TOC) content of 0.68 wt % and constitute of oil and gas prone kerogen type II. The maximum temperature (Tmax) is 418 oC. Thermal characteristics of analyzed sample obtained by TGA is in conformity with R.E parameters. The results obtained from R.E pyrolysis reveal that the shale oil contains good quality kerogen to generate oil and gas during pyrolysis. Fixed bed pyrolysis was performed in order to obtained shale oil, gas and coke. Temperature of 500 oC gave an optimum yield of 50.20 wt %.GCMS analysis shows the organic compounds present in the shale oil. Physical properties such as viscosity, density, pour point, flash point, calorific value, pH and moisture content were studied and compared with standard shale oil. The BET analysis shows that the specific surface area of the kerogen was 171.95 m2 / g, pore size was 2.97 nm and pore volume was 0.068 cm3 / g which enhance the flow of oil within the kerogen sample.