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Effect of solvent composition on heavy oil displacement while modeling

Authors: M.R. Yakubov, D.N. Borisov (Arbuzov Institute of Organic and Physical Chemistry, Kazan Research Center, RAS, RF, Kazan), Sh.G. Rakhimova, M.I. Amerkhanov (TatNIPIneft, RF, Bugulma), R.S. Khisamov (Tatneft OAO, RF, Almetyevsk)

Key words: heavy oil production, solvent injection, asphaltene deposits.

The paper discusses the issues of modeling of heavy oil production processes. Results of laboratory modeling of oil displacement with a composite light-alkane based solvent in different in-situ conditions are presented. It has been shown that adjustment of solvent composition may preclude asphaltenes deposition, which, ultimately, increases heavy oil displacement efficiency.
References
1. Rassenfoss S., A tricky tradeoff - can adding a little solvent yield a lot more heavy crude?, JPT, 2012, no. 6, pp. 58-64.
2. Orr B., ES-SAGD: Past, Present, and Future, Paper SPE 129518, presented at the SPE Annual Technical Conference and Exhibition, New Orleans, 4-7 October 2009.
3. Boone T. et al., An integrated technology development plan for solventbased recovery of heavy oil, Paper SPE 150706, 2011.
4. Stark S., Increasing Cold Lake recovery by adapting steamflood principles
to a bitumen reservoir, Paper SPE 145052, 2011.
5. Gupta S., Gittins S., Semianalytical approach for estimating optimal solvent
use in solvent aided SAGD process, Paper SPE 146671, 2011.
6. Edmunds N., Moini B., Peterson J., Advanced solvent-additive processes by
genetic optimization, JCPT, 2010, V. 49, no. 9, pp. 34-41.
7. Ibatullin T.R., Steam Assisted Gravity Drainage enhancement using hydrocarbon solvents (In Russ.), Neftyanoe khozyaystvo – Oil Industry, 2008, no. 10, pp. 74-76.
8. Rakhimova Sh.G., Amerkhanov M.I., Khisamov P.C., The possibility of using petroleum solvents in steam stimulation technology (In Russ.), Neftyanoe khozyaystvo – Oil Industry, 2009, no. 2, pp. 101-103.

Key words: heavy oil production, solvent injection, asphaltene deposits.

The paper discusses the issues of modeling of heavy oil production processes. Results of laboratory modeling of oil displacement with a composite light-alkane based solvent in different in-situ conditions are presented. It has been shown that adjustment of solvent composition may preclude asphaltenes deposition, which, ultimately, increases heavy oil displacement efficiency.
References
1. Rassenfoss S., A tricky tradeoff - can adding a little solvent yield a lot more heavy crude?, JPT, 2012, no. 6, pp. 58-64.
2. Orr B., ES-SAGD: Past, Present, and Future, Paper SPE 129518, presented at the SPE Annual Technical Conference and Exhibition, New Orleans, 4-7 October 2009.
3. Boone T. et al., An integrated technology development plan for solventbased recovery of heavy oil, Paper SPE 150706, 2011.
4. Stark S., Increasing Cold Lake recovery by adapting steamflood principles
to a bitumen reservoir, Paper SPE 145052, 2011.
5. Gupta S., Gittins S., Semianalytical approach for estimating optimal solvent
use in solvent aided SAGD process, Paper SPE 146671, 2011.
6. Edmunds N., Moini B., Peterson J., Advanced solvent-additive processes by
genetic optimization, JCPT, 2010, V. 49, no. 9, pp. 34-41.
7. Ibatullin T.R., Steam Assisted Gravity Drainage enhancement using hydrocarbon solvents (In Russ.), Neftyanoe khozyaystvo – Oil Industry, 2008, no. 10, pp. 74-76.
8. Rakhimova Sh.G., Amerkhanov M.I., Khisamov P.C., The possibility of using petroleum solvents in steam stimulation technology (In Russ.), Neftyanoe khozyaystvo – Oil Industry, 2009, no. 2, pp. 101-103.


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