An Investigation of Water Saturation, Viscosity and an Estimation of Producible Hydrocarbon of Ilam and Asmari Formation Using Nuclear Magnetic Resonance (NMR)

Document Type : Research Paper

Authors

Physics Department, Shiraz University, Shiraz

Abstract

NMR logging is one of the most modern tools in oil wells, which is employed for obtaining petrophysical parameters. One of the most important abilities of NMR is hydrocarbon typing near the borehole. In this technique, there are two methods for hydrocarbon typing: dual TW method and dual TE method. The current paper studies the hydrocarbons in Asmari and Ilam formations of Ahwaz oil zone. At first, the petrophysical parameters of the reservoir such as porosity, water saturation, and viscosity were studied and it was found out that there was a good consistency in porosity data with the standard one; then, the hydrocarbon typing in this well was qualitatively investigated. Next, due to the presence of Twlong and Twshort at a depth of 3019 meter, the porosity of oil was obtained to be 0.027, which was exactly the same as the values obtained in the experimental data. The water saturation and viscosity were calculated using fluid substitution model and T2lm respectively.
 

Keywords

References

[1]. Coates George R. Xiao Lizhi. and Prammer Manfred G., NMR logging principle & application, Houston, Texas:Halliburton Energy Services, 1999.
[2]. Mardon D., Miller D., Howard A., Coates G., Jackson J., Speath R. and Nankervis J., “Characterization of light hydrocarbon- bearing reservoirs by gradient NMR well logging: a gulf of mexico case study”, Paper was presented at the SPE Annual Technical Conference and Exhibition, Denver, Colorado, USA, 1996.
[3]. Hou B. L., Coates G. R. “Nuclear magnetic resonance logging methods for fluid typing”, SPE 48896 Inc, The Paper was presented in International Conference and Exhibition in China held in Beijing, China, 1998.
[4]. Chen Songhua., Georgi D. T., Olima Oscar., Gamin, Hector., Minetto J. C. and S.A., “Estimation of hydrocarbon viscosity with mulyipleTE, Dual TW MRIL Log”, SPE 68021 Annual Technical Conference and Exhibition, Orleans, 2000.
[5]. Howard J., Hermansen H., Vedvik A., “NMR-based water saturation estimates in ekofisk water flood zones”, Philips Petroleum Company, Trondheim, Norway, 2001.
[6]. Sun B. Q., Olson M., Baranowski J., Chen S., Li, W., and Georgy D., “Direct fluid typing and quantification of orinoco belt Heavy oil reservoirs using 2D NMR logs”, Paper was presented at the SPWLA 47th Annual Logging Symposium held in Veracruz, June 4-7, 2006.
[7]. Akkurt Ridvan, Prammer, Manfred G., Malvern, PA. and Andrei Moore, M., Selection of optimal acquisition parameters for MRIL logs, Paper TT SPWLA 37th Annual Logging Symposium in New Orleans, 1996.
[8]. Chilingarian G., Mazzullo S. and Rieke H., Carbonate reservoir characterization a geologic-engineering analysis, part I, II. USA: Elsevier Science Publishing Company Inc, 1992,1996.
[9]. Sun B. Q., Dunn K. D., “NMR inversion methods for flud typing”, Paper was presented at SPWLA 44th annual logging symposium, June 22-25, 2003.
[10]. Glorioso J. C., Aguirre O., Piotti G. and Mengual J. F., “Derriving capillary pressure and water saturation from NMR transversal relaxation times”, Paper was presented at the SPE Latin American and Caribbean Petroleum Engineering Conference held in port of Spain, Trinidad, West Indies 27-30 April, 2003.
[11]. Loyestijn W., Hofman J., “Wettability-index determination by nuclear magnetic resonance”, Paper was presented at the 2005 SPE Middle East Oil & Gas show and conference, Bahrain, 12-15 March, and revised for publication, 2006.
Journal of Petroleum Research
Volume 24, Issue 79 - Serial Number 79
November and December 2014
Pages 40-51

Files

Share

How to cite

Statistics