Feasibly Study of Autoignition Process in Heavy-Oil Reservoirs (2005)

Feasibility Study of Autoignition Process in Heavy-Oil Reservoirs S. Razaghi; S. Razaghi Petroleum U. of Technology Search for other works by this author on: This Site Google Scholar R. Kharrat; R. Kharrat Petroleum U. of Technology Search for other works by this author on: This Site Google Scholar D. Price; D. Price U. of Bolton Search for other works by this author on: This Site Google Scholar S. Vossoughi; S. Vossoughi U. of Kansas Search for other works by this author on: This Site Google Scholar D. Rashtchian D. Rashtchian Sharif U. of Technology Search for other works by this author on: This Site Google Scholar Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, Calgary, Alberta, Canada, November 2005. Paper Number: SPE-97887-MS https://doi.org/10.2118/97887-MS Published: November 01 2005 Cite View This Citation Add to Citation Manager Share Icon Share Twitter LinkedIn Get Permissions Search Site Citation Razaghi, S., Kharrat, R., Price, D., Vossoughi, S., and D. Rashtchian. "Feasibility Study of Autoignition Process in Heavy-Oil Reservoirs." Paper presented at the SPE International Thermal Operations and Heavy Oil Symposium, Calgary, Alberta, Canada, November 2005. doi: https://doi.org/10.2118/97887-MS Download citation file: Ris (Zotero) Reference Manager EasyBib Bookends Mendeley Papers EndNote RefWorks BibTex Search Dropdown Menu toolbar search search input Search input auto suggest filter your search All ContentAll ProceedingsSociety of Petroleum Engineers (SPE)SPE International Thermal Operations and Heavy Oil Symposium Search Advanced Search Abstract Heavy oil is an important part of the energy resource in the world. With today's increasing demand for energy resources, heavy oil recovery is under great attention. Heavy oil deposits in Middle East are in fractured carbonate-type reservoirs that have not been studied in the literature.One of the important factors in the feasibility of in situ combustion (ISC) on a heavy oil reservoir to sustain fireflood is the auto-ignition temperature under reservoir conditions.In this study, the kinetic model of different heavy oil samples from South West Iran mixed with silica sand or crushed carbonate rock and clay were studied using Thermogravimetric Analyzer (TGA) and Differential Scanning Calorimeter (DSC) techniques. The reactions were carried using air enriched with different percentages of oxygen.Two sets of experiments for the combustion of crude oil samples were carried out by TGA equipment for the determination of auto-ignition temperature. In the first, the system was operated non-isothermally with a linear temperature rise 10°C/min; while in the second the reaction was conducted isothermally at different temperatures. In both kinds of experiments the CO, CO2, hexane and propane in the exhaust gases from the TGA, were measured by an Infrared Analyzer (IR).Based on the TGA runs performed, it is concluded that auto ignition was related to the percentage of enriched air for both the silica sand and carbonate rock in the presence of clay. In addition, as expected in DSC run under non-isothermal Low Temperature Combustion (LTC) and High Temperature Combustion (HTC) reactions clearly reveal exothermic peaks. Keywords: exhaust gas, tga curve, oxygen content, concentration, oxygen concentration, bitumen, reaction, sample 1, different oxygen content, crude oil Subjects: Improved and Enhanced Recovery, Unconventional and Complex Reservoirs, Oil sand, oil shale, bitumen Copyright 2005, SPE/PS-CIM/CHOA International Thermal Operations and Heavy Oil Symposium You can access this article if you purchase or spend a download.