Waterflooding Viscous Oil Reservoirs
- Dennis Beliveau (Cairn India Limited)
- Document ID
- Society of Petroleum Engineers
- SPE Reservoir Evaluation & Engineering
- Publication Date
- October 2009
- Document Type
- Journal Paper
- 689 - 701
- 2009. Society of Petroleum Engineers
- waterflooding viscous oils, Waterflood, high mobility ratio, waterflooding heavy oils, viscous oil
- 11 in the last 30 days
- 3,142 since 2007
- Show more detail
- View rights & permissions
|SPE Member Price:||USD 12.00|
|SPE Non-Member Price:||USD 35.00|
In 2004, the large Mangala, Aishwariya, and Bhagyam oil-fields were discovered in the remote Barmer basin of Rajasthan, India. The fields contain light, paraffinic crude oils with wax-appearance temperatures only 5°C less than reservoir temperatures and in situ viscosities that range from 8 to 250 cp. As these were the first significant hydrocarbon discoveries in this part of India, there were few analog performance data available. Development plans for the fields are based on hot waterflooding to prevent problems with in-situ wax deposition, with production startup expected in 2009.
This article presents some waterflood results from viscous-oil fields around the world, benchmarks the expected performance of the newly discovered Rajasthan fields to this database, and discusses several issues associated with waterflooding viscous oils. Given that the Rajasthan oils have some properties that might be considered "unusual" and potentially troublesome for waterflooding and that there are no long-term production data or a history match of waterflood performance in hand, these benchmarks were considered important reality checks. In fact, fields with similar or much higher viscosities are waterflooded routinely with excellent recoveries in Canada, the USA, and elsewhere.
Waterflooding is sometimes dismissed as an ineffective process for a viscous-oil field, with development plans focused on more-exotic and -expensive recovery mechanisms such as chemical or thermal processes. However, basic application of Darcy's law and fractional flow theory, combined with operations that focus on production at very high water cuts, clearly shows that viscous-oil fields can yield reasonably good ultimate recoveries under waterflood.
|File Size||1 MB||Number of Pages||13|
Beliveau, D. 2007. DetailedSpecial Core Analysis Program: A Key to Aggressive Field DevelopmentPlanning--Rajasthan India. Paper SPE 107204 presented at the EUROPEC/EAGEConference and Exhibition, London, 11-14 June. doi: 10.2118/107204-MS.
Buckley, S.E. and Leverett, M.C. 1942. Mechanism of Fluid Displacement in Sands. Trans., AIME, 249:107-116.
Dake, L.P. 1978. Fundamentals of Reservoir Engineering. New York:Elsevier Scientific Publishing Company.
Dietz, D.N. 1953. A Theoretical Approach to the Problem of Encroaching andBy-Passing Edge Water. Proc. Akad. van Wetenschappen 56-B:83.
Edgson, J.J. and Czyzewsi, G. 1985. Production Evaluation of the VikingKinsella B Pool Unit No. 1. J. of Canadian Petroleum Technology(July-August).
GeoScout™ databases. 2007. Alberta Energy and Utilities Board.
Hagoort, J. 1974. DisplacementStability of Water Drives in Water-Wet Connate-Water-Bearing Reservoirs.SPE J. 14 (1): 63-74; Trans., AIME, 257.SPE-4268-PA. doi: 10.2118/4268-PA.
Kasrale, M., Sammon, P.H., and Jespersen, P.J. 1993. Field Development Options for aWaterflooded Heavy-Oil Reservoir. J. Pet Tech 45 (9):888-894. SPE-20049-PA. doi: 10.2118/20049-PA.
Kumar, M., Hoang, V., Satik, C., and Rojas, D.H. 2008. High-Mobility-Ratio Water FloodPerformance Prediction: Challenges and New Insights. SPE Res Eval &Eng 11 (1): 186-196. SPE-97671-PA. doi: 10.2118/97671-PA.
Pawelek, J. and Chorney, M. 1966. Waterflood Behaviour of the Low-GravityWainwright Pool. Journal of Canadian Petroleum Technology(April-June).
Rathore, Y.S., Ananthakrishnan, B., Flynn, M., and Compton, P.M. 2006. TheMangala Field, Rajasthan, India: A Story of Rapidly Advancing SubsurfaceUnderstanding in Readiness for Development. Abstract ID102682. AAPG AnnualConvention, Houston, 9-12 April.
Wheaton, S. 2007. The Challenge of Waxy, High Pour Point Oil Production.Presented at PetroTech 2007, New Delhi, India, 15-19 January.
Woodling, G.S., Taylor, P.J., Sun, H.H., Nguyen, Q.N., and Brix, T.R. 1993.Layered Waterflood Surveillance ina Mature Field: The Long Beach Unit. Paper SPE 26082 presented at the SPEWestern Regional Meeting, Anchorage, 26-28 May. doi: 10.2118/26082-MS.