Correction of measured vitrinte reflectance data using the "Fluorescence Alteration of Multiple Macerals" (FAMM) and their application to Well Binak #4 one-dimensional thermal maturity modeling
Subject Areas :
Mohammad
KassaieNajafi
1
Faramarz
Shabani
2
Maryam
Mirshahani
3
Beyok
Ghorbani
4
Arsalan
Zenalzadeh
5
Keywords: Thermal maturity Vitrinite reflectance Suppression Fluorescence Alteration of Multiple Macerals (FAMM) ,
Abstract :
Reflectance of maceral constituents of kerogens, particularly vitrinite (Ro%), commonly used in petroleum exploration, is a very important indicator for determining degree of thermal maturity and investigating status of hydrocarbon generation. Although in vitrinite reflectance profiles maturity generally increases with increasing depth of burial, basin modelers often experience problems when modeling thermal maturity using vitrinite reflectance data measured by using reflected light- photometer microscopes. The problem of reduced vitrinite reflectance mainly arises due to reflectance suppression in vitrintes. By using the laser Raman microprobe, a new multi-parameter technique called "Fluorescence Alteration of Multiple Macerals (FAMM)" was developed by Australian scientists to solve these problems. In this study, data obtained by application of this method were used to correct suppressed vitrinite reflectance values. In order to examine and demonstrate the extent of suppression effect on modeling results, maturity profile constructed by one-dimensional modeling of Well Binak-4 was calibrated using conventional measured vitrinite reflectance (Ro%) and FAMM equivalent vitrinite reflectance (EqVR) data and results were compared with present time measured well temperatures. The crucial differences in maturation, transformation ratio, hydrocarbon generation and expulsion resulted from application of these two type data as calibration parameters are discussed and demonstrated using relevant diagrams.
#HUNT, J.M., 1996, Petroleum Geochemistry and Geology. 2nd Edition. W.H. Freeman and Company, New York, 332
KALKREUTHA, W., SHERWOOD, N., CIOCCARIA, G., CORREˆA DA SILVAA, Z., SILVAA, M., ZHONGC, N., and ZUFAD, L., 2004, The application of (Fluorescence Alteration of Multiple Macerals) analyses for evaluating rank of Parana´ Basin coals, Brazil: International Journal of Coal Geology, 57, 167– 185#
LEWAN, M.D., 1993, Identifying and understanding suppressed vitrinite reflectance through hydrous pyrolysis experiments (abstract): TSOP Abstracts and Program, 10, 1-3#
PRICE, L.C., and BARKER, C.E., 1985, Suppression of vitrinite reflectance in amorphous rich kerogen; a major unrecognized problem: Journal of Petroleum Geology, 8, 59-84#
SEEWALD J.S., and EGLINTON, T.I., 1999, Laboratory Simulations of Organic Matter Thermal Maturation. The Encyclopedia of Geochemistry. Earth Science Encyclopedia Series (C.P. Marshall, ed.) Kluwer, The Netherlands#
TEICHMULLER, M., and OTTENJAN, K., 1977, Art und Diagenese von Liptiniten und lipoiden Stoffen in einem Erdolmuttergestein auf Grund fluorescenzmikroskopischer Untersuchungen: Erdöl und Kohle, 30, 387–398#
WILKINS, R.W.T., WILMSHURST, J.R., RUSSELL, N.J., HLADKY, J, ELLACOTT, M.V., and BUCKINGHAM, C.P., 1992, Fluorescence alteration and the suppression of vitrinite reflectance: Organic Geochemistry, 18, 629-640#
WILKINS, R.W.T., RUSSELL, N.J., and ELLACOTT, M.V., 1994, Fluorescence alteration and thermal maturity modeling of Carnarvon Basin wells. In PURCELL, P.G., and PURECELL, R.R., (Eds.). The sedimentary basin of Western Australia: Proceedings of the Petroleum Exploration Society of Australia Symposium, Perth, 415-432#
WILKINS, R.W.T., WILMSHURST, J.R., HLADKY, G., ELLACOTT, M.V., and BUCKINGHAM, C.P., 1995, Should fluorescence alteration replace vitrinite reflectance as a major tool for thermal maturity determination in oil exploration: Organic Geochemistry, 22, 191-209#
WILKINS, R.W.T., BUCKINGHAM, C.P., SHERWOOD, N., RUSSELL, N.J., FAIZ, M., and KURUSINGAL, J., 1998, The current status of the FAMM thermal maturity technique for petroleum exploration in Australia: Australian Petroleum Production and Exploration Association Journal, 38, 421-437#
WILKINS, R.W.T., DIESSEL, C.F.K., and BUCKINGHAM, C.P., 2002, Comparison of two petrographic methods for determining the degree of anomalous vitrinite reflectance: International Journal of Coal Geology, 52, 45– 62#