Submissions
Policies
Heterogeneous Reservoir Characterization (Upper Bahariya Case study)
Upper Bahariya reservoir is one of the big productive reservoirs in the Western Desert (Egypt). It is characterized by high degree of heterogeneity. So, it is very important to characterize it accurately for improving its recoverable oil. Different tools were used to accomplish this task. These tools include Dykstra-Parsons coefficient, Lorenz coefficient, well correlation, hydraulic flow units, relative permeability and capillary pressure. Dykstra-Parsons coefficient (permeability variation factor) and Lorenz coefficient were determined for Upper Bahariya reservoir and found to be 0.86 & 0.92 respectively. This reveals that this reservoir is extremely heterogeneous. These results are proportionated with the pressure readings and the open hole logging format. The hydraulic flow unit’s reservoir technique showed the reservoir can be divided into nine flow units. The relative permeability curves of the reservoir indicated that it is a water wet system while the capillary pressure curve looks like a transition zone due to its high heterogeneity and high connate water saturation.
Keywords
Heterogeneity; dykstra-parsons coefficient; Lorenz coefficient; hydraulic flow units; reservoir quality index; flow zone indicator; relative permeability and capillary pressure
References
Jude O. Amaefule & et.al.: “Enhanced Reservoir Description Using Core and Log Data to Identify Hydraulic Flow Units and Predict Permeability in Uncored Intervals /Wells” SPE-26436, annual Technical Conference & Exhibition held in Houston, Texas, 3-6 Oct.-1993.
Kramers, J. W. “Integrated Reservoir Characterization from the Well to the Numerical Model” 26148 WPC Conference Paper–1994.
Shedid S. A. & Reyadh A. Almehaideb: “Robust Reservoir Characterization of UAE Heterogeneous Carbonate Reservoirs” SPE- 81580, the SPE 13th Middle East Oil Show & Conference Held in 5-8 April-2003.
L. Jensen & lain D. Currie: “A new Method for Estimating the Dykstra-Parsons Coefficient to Characterize Reservoir Heterogeneity” SPE-17364, Copyright 1990 Society of Petroleum Engineers.
Ahmad Mubarak Alharbi: “Experimental Evaluation of the Effect of Carbonate Heterogeneity on Oil Recovery to Water and Gas Injection” PhD thesis submitted to University of Calgary, Department of chemical & petroleum engineering, 2013. PP 11-12.
Tarek Ahmed: “Reservoir Engineering Handbook” Gulf Professional Company, Boston, London, 2001,
Second Edition.
AbdusSatter, Ghulam M. Iqbal & James L. Buchwatter: “Practical Enhanced Reservoir Engineering Assisted with Simulation Software” PennWell Corporation, Tulsa, Oklahoma, U.S.A, 2008.
Djebbar Tiab & Erle C. Donaldson: “Petrophysics: Theory and Practice of Measuring Reservoir Rock and
Fluid Transport Second Edition” Gulf Professional Company, Amsterdam, Boston, London, 2004.
Peter Fitch1 & ET.AL.: “The Petrophysical Link between Reservoir Quality and Heterogeneity: Application of the Lorenz Coefficient” SPWLA-2013-Q, SPWLA 54st Annual Logging Symposium, Jun-2013.
L.W. Lake and J.L. Jensen: “Review of Heterogeneity Measures Used in Reservoir Characterization” 20156-MS SPE General-1989.
Archer, J.S. & Wall. C.G.: “Petroleum Engineering Principles and Practice” Graham & Trotman Ltd, London, UK, 1986.
Maghsood Abbaszadeh, Hikari Fuji & Fujio Fujimoto: “Permeability Prediction by Hydraulic Flow Units
Theory and Application” SPE-30158, Petrovietnam Conference Held in Hochiminh, 1-3 mar 1996.
Odilia Deghirmandjian: “Identification and Characterization of Hydraulic Flow Units in The SAN JUAN
Formation, OROCUAL field, VENEZUELA” M.Sc. thesis submitted to Texas A & M University, 2001.
Fahad A. Al-Ajmi & Stephen A. Holditch: “Permeability Estimation Using Hydraulic Flow Units in a
Central Arabia Reservoir” SPE-63254, The 2000 SPE Annual Technical Conference and Exhibition held in
Dallas, Texas, 1–4 Oct.-2000.
Syed Shujath Ali, M. Enamul Hossain & Abdulazeez Abdulraheem: “Hydraulic Unit Estimation from Predicted Permeability and Porosity Using Artificial Intelligence Techniques” SPE-164747, North Africa Technical Conference & Exhibition held in Cairo, Egypt 15 - 17 April 2013.
Tohid Nejad Ghaffar Borhani & Seyed Hossein Emadi, “Application of Hydraulic Flow Units and Intelligent Systems for Permeability Prediction in a Carbonate Reservoir” the 3rd (2011) CUTSE International Conference Miri, Sarawak, Malaysia, Nov.-2001.
S.E.D.M. Desouky: “Predicting Permeability in Un-Cored Intervals/Wells Using Hydraulic Flow Unit Approach” Journal of Canadian Petroleum Technology, PETSOC-05-07-04-P, Volume 44, No. 7, Jul.-2005.
Torsæter, O & Abtahi. M: “Experimental Reservoir Engineering Laboratory Work Book” Department of
Petroleum Engineering and Applied Geophysics, Norwegian University of Science and Technology, 2003.
Livia J. Sivila: “A Petrophysical Evaluation of Capillary Pressure for Naturally Fractured Tight Gas Sandstone (Reservoir: A Case Study)” M.Sc. thesis submitted to Colorado School of Mines (Petroleum Engineering).
Sidqi A. Abu-Khamsin: “Basic Properties of Reservoir Rocks” King Fahd University of petroleum & minerals, 2004.
Timmerman E.H.: “Practical Reservoir Engineering Part-1” PennWell Publishing Company, Tulsa, Oklahoma, 1982.
Copyright (c) 2018 Abdelwahab Bayoumi, Elsayed Gomaa, Abdelnaser Hamdy
This work is licensed under a Creative Commons Attribution 4.0 International License.
This work is licensed under a Creative Commons Attribution 4.0 International License.
Abdelwahab Bayoumi
