Experimental Investigation of CO2 Miscible Flood in West Kuwait

Abdullah Fahad Alajmi, Meshal Algharaib, Ridha Gharbi, Huda Alenezi, Bader AlMatar, Khalaf Al-Enezi

Abstract


As reservoirs approach maturity, the understanding and implementation of Enhanced Oil Recovery (EOR) techniques become essential to meet the world growing oil demand. EOR processes involve the displacement of one fluid by another. The major EOR methods in the petroleum industry include thermal, miscible and chemical processes. Miscible displacement methods involve the injection of solvents that will inter-mix with the reservoir oil to increase its mobility and reduce the oil saturation to low values in the  swept zone of an oil reservoir. This work is part of Kuwait strong focus on EOR applications in Kuwaiti reservoirs to maximize the hydrocarbon recovery factors for a sustainable growth in oil production. This study is an experimental study that evaluates and investigates the miscible flood performance in Kuwait. An oil formation was selected as a candidate reservoir for this study after conducting EOR screening criteria. Core and fluid samples were collected and their properties were  evaluated.  Slim tube experiments were conducted to measure the oil minimum miscibility pressure with CO2.  Coreflooding experiments were conducted to evaluate the recovery factor from different injection scenarios.  The experimental injection scenarios included the effect of several design parameters including WAG ratio and number of cycle per WAG. These parameters showed different effects on the recovery factor. Optimum injection scenario was obtained which gave the highest recovery factor (WAG 1:2 and number of cycle 2). In this study, the in-situ miscibility achievement was quantified and evaluated at different injection scenarios. The outcomes of this work provide valuable information for future miscible flood field implementation.

Keywords


Enhanced Oil Recovery; Miscible Flood; Reservoir Engineering and Core Flooding.

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References


Al-Ajmi, M., Al-Anzi, E., Al-Anzi, H., Karaoguz, O., Al-Ghadban, A., Baroon, B., Al-Dhuwaihi, A., Al-Otaibi, B., and Wigg, H. 2010. North Kuwait Miscible Gas EOR Study. Oman. SPE 127072.

Al-Ajmi, M., Alomair, O., and Elsharkawy, A. 2009. Planning Miscibility Tests And Gas Injection Projects For Four Major Kuwaiti Reservoirs. Kuwait City, Kuwait. SPE 127537.

Al-Bahar, M., Merrill, R., Peake, W., Jumaa, M., and Oskui, R. 2004. Evaluation of IOR Potential within Kuwait. Abu Dhabi, UAE. SPE 88716.

Algharaib, M. 2009. Potential applications of CO2-EOR in Middle East. Kingdom of Bahrain. SPE 120231.

Alkafeef, S. and Zaid, A. 2007. Review of and Outlook for Enhanced Oil Recovery Techniques in Kuwait Oil Reservoirs. Dubai, UAE. IPTC 11234.

Al-Mayyan, H., Al-Anzi, E., and Al-Ajmi, M. 2007. Investigation of Miscible Gas Flooding in North Kuwait Reservoirs by Experimental and Modeling Approaches. Dubai, UAE. IPTC 11688.

AL-Mutairi, S., AL-Medhadi, F., AL-Ajmi, H., Meadows, D., and Oosthuizen, U. 2001. A Full Field Simulation Model of the Minagish Oolite Reservoir in Kuwait. Midland, Texas. SPE 70046.

Al-Saad, B., Pathak, A., Tiwari, S., and Baroon, B. 2013. EOR in North Kuwait-From Concept to Field Test. Mishref, Kuwait. SPE 167281.

Dyes, A.B. 1963. Method for Increasing Recovery of Oil. U.S. Patent No. 3,096,821.

Figarella, L. 2012. Technology Applications in Kuwait Oil Company to Reach Objectives Set in 2030 Strategy. Abu Dhabi, UAE. SPE 162227.

Green, D. and Willhite, G. 1998. Enhanced Oil Recovery. SPE Textbook Series. Volume 6.

Maklavani,A., Vatani, A., Moradi, B., and Tangsirfard, J. 2010. New Minimum Miscibility Pressure (MMP) Correlations For Hydrocarbon Miscible Injections. Brazilian Journal of Petroleum and Gas. Vol 4. No. 1. Pages 11-19.

Organization of the Petroleum Exporting Countries (OPEC). 2014. World Oil Outlook.

Stalkup Jr. F. 1983. Status of Miscible Displacement. Journal of Petroleum Technology. Volume 35. Issue 04. Pages 815-826.

Taber, J., Martin, F., and Seright, R. 1997. EOR Screening Criteria Revised – Parts 1 and 2. SPE Reservoir Engineering Journal. Pages 189-205.

Wilkinson, J., Teletzke, G., and King, K. 2006. Opportunities and Challenges for Enhanced Recovery in Middle East. Abu Dhabi, UAE. SPE 101679.


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