Effect of Stratification on Segregation in Carbon Dioxide Miscible Flooding in a Water-Flooded Oil Reservoir

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Published: Jun 22, 2016

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A. A. Bhatti
S. M. Mahmood
Bilal Amjad

Abstract

Oil reservoirs are subjected to tertiary recovery by deploying any enhanced oil recovery (EOR) technique for the recovery of left over oil. Amongst many EOR methods one of the widely applied worldwide is CO2 flooding through miscible, near miscible or immiscible displacement processes. CO2 flooding process responds to a number of reservoir and fluid characteristics. These characteristics have strong effect on overall efficiency of the displacement process. Better understanding of the effect of different characteristics on displacement process is important to plan an efficient displacement process. In this work, the effect of stratification resulting in gravity segregation of the injected fluid is studied in an oil reservoir which is water-flooded during secondary phase of recovery. Sensitivity analysis is performed through successive simulation on Eclipse300 (compositional) reservoir simulator. Process involves the continuous CO2 injection in an oil reservoir with more than 1/3rd of original oil in place left after water flooding. Reservoir model with four different permeability layers is studied. Four patterns by changing the arrangement of the permeabilities of the layers are analysed. The effect of different arrangement or stratification on segregation of CO2 and ultimately on the incremental oil recovery, is investigated. It has been observed that out of four arrangements, upward fining pattern relatively overcame the issue of the segregation of CO2 and consequently 33% more oil with half injection volume is recovered when compared with the downward fining pattern.

Article Details

Issue
2013: Volume 13 JULY 2013
Section
Polymer Engineering and Chemical Engineering, Materials Engineering, Physics, Chemistry, Mathematics

References

Sheikh S A, 1978. Effectiveness of Rectangular Ties as Confinement Steel in Reinforced Concrete Columns.” Ph.D Thesis, Department of Civil Engineering, University of Toronto, Canada, pp. 256.

Richart, F. E., Brandzaeg, A. and Brown, R. L. 1928. “A study of the failure of concrete under Combined Compressive Stresses”. University of Illinois Engineering Station, Bulletin No. 185, 104 pp.

Balmer, G.G. 1943. “Shearing Strength of Concrete under High Triaxial Stresses – Computation of Mohr’s Envelope as a Curve”. Structural Research Laboratory Report No. SP- 23, U.S. Bureau of Reclamation, 13 pp. plus tables and Figures.

Iyengar, S.R., Desayi, K.P.T., and Nagi, R.K.; Desayi and Nagi Reddy, K., 1970. “Stress- Strain Characteristics of concrete Confined in Steel Binder”, Magazine of Concrete Research, Vol. 22, No 72, pp. 173-184.

Parakash Desayi, Sundara Raja Iyengar, K.T. and Sanjeeva Reddy, T. 1978. “Equation for Stress-Strain Curve of Concrete Confined in Circular Steel Spiral”, Matériau et Constructions, Vol. 11 – No 65, pp. 339-345.

Muguruma, H., Watanabe, F., Tanaka, H., Sakurai, K. and Nakamura, E. 1979. “Effect of Confinement by High Yield Strength Hoop Reinforcement upon the Compressive Ductility of Concrete”, Proceedings of the Twenty- Second Japan Congress on Material Research, The Society of Material Science, Japan, pp. 377-382.

Muguruma, H., Watanabe, F., Tanaka, H., Sakurai, K. and Nakamura, E. 1979. “Study on Improving the Flexure and Shear Deformation Capacity of Concrete Member by Using Lateral Strength”, Comité Euro-International du Béton, BULLETIN D'INFORMATION No 132, Volume 2 – Technical Papers, AICAP-CEB Symposium, Rome, May, pp. 37-44.

Watanabe, F., Muguruma, H., Tanaka, H. and Katsuda, S., 1980. “Improving the Flexural Ductility of Prestressed Concrete Beam by Using the High Yield Strength Lateral Hoop Reinforcement”, FIP, Symposia on Partial Prestressing and Practical Construction in Prestressed and Reinforced Concrete, Proceedings: Part 2, Bucuresti-România, pp. 398-406.

Mander, J. B., Priestley, M.J.N. and Park, R. 1988. “Theoretical Stress Strain Model for Confined Concrete” Journal of Structural Engineering, American Society of Civil Engineers, vol. 114, No. 8, pp. 1804-1826.

Mander, J. B., Priestley, M.J.N. and Park, R. 1988. “Observed Stress-Strain Behavior of Confined Concrete” Journal of Structural Engineering, American Society of Civil Engineers, No. 8, pp. 1827-1849.

Popovics, S. 1973. “A Numerical Approach to the complete Stress-Strain Curves of Concrete”, Cement and Concrete Research, Vol. 3, No. 5, pp. 583-599.

Roy, H.E.H. and Sozen, M.A. 1964. “Ductility of Concrete”, Proceedings of the International Symposium on Flexural Mechanics of Reinforced Concrete, ASCE-ACI, Miami, pp. 213-224.

Soliman, S.A. and Uzumeri, S.M., 1979. “Properties of Concrete Confined by Rectangular Tie”, AICAP-CEB Symposium on Structural Concrete under Seismic Actions (Rome, May 1979), Bulletin d'Information No. 132, Comité Euro-International du Beton, Paris, pp-53-60.

Park, R., Priestley, M.J.N. and W.D. Gill. 1982.“Ductility of Square Confined Concrete Columns” Proceedings ASCE, Vol. 108, ST4, pp

-929-950.

Kent, D. C. and Park, R. 1971. “Flexural Members with Confined Concrete”, Proceedings of ASCE, Vol. 97, No. ST 7, pp. 1969-1990.

Sheikh S. A. and Uzumeri , S. M., 1980. “Strength and ductility of tied concrete columns”, Journal of the structure division, ASCE, 106(5), pp 1079-1102.

Sheikh S. A. and Yeh C.C., 1982. “Flexural behavior of confined concrete columns”, ACI Journal, pp-389–404.

Saatcioglu, M. and Razvi, S. R., 1992. “Strength and ductility of confined concrete”, Journal of Structural Engineering, ASCE, 118 (6), pp. 1590-1607.

Razvi, S. R. and Saatcioglu, M. 1996. “Design of RC columns for confinement based on lateral drift”, Ottawa-Carleton Earthquake Engineering Research Center, Report OCEERC 96-02, Dept. of Civil Engineering, Univ. of Ottawa, Ottawa, Canada, pp. 92.

Razvi, S. R. and Saatcioglu, M. 1999. “Stress- strain relationship for confined high strength concrete”, Journal of Structural Engineering, ASCE, 125 (3).

Hoshikuma, J. , Kawashima, K., Nayaga, K. and Taylor, A.W. 1994. “Stress–strain model for confined RC in bridge piers”, Journal of Structural Engineering, Vol.123(5), pp-624– 633.

EL-Dash. K. M. and Ahmad. S. H. 1994. “A model for the stress-strain relationship of rectangular confined normal and high strength concrete columns”, Material and structures, No. 27, pages 572-579.

Bousalem, B. and Chikh, N. 2006. “Development of a confined model for rectangular ordinary reinforced concrete columns”, Journal of Material and Structures, DOI 10.1617/s11527-06-9172-2.

Bing, L., Park, R. and Tanaka, H. 2001. Stress– strain behavior of high strength concrete confined by ultra-high and normal strength transverse reinforcements. Structural Journal, ACI, May–June, pp-395–406.

Response 2000. 2013. “A sectional analysis program that will calculate the strength and ductility of a reinforced concrete cross-section subjected to shear, moment, and axial load” http://www.ecf.utoronto.ca/~bentz/r2k.htm, last visited on August 2013.

Vecchio F.J and Collins M. P 1988. “Predicting the response of reinforced concrete beams subjected to shear using modified compression field theory”. ACI Structural Journal, Vol 85 No 3, pp-258-268.

Bentz E. C. and Collins M. P 2009. “Load- Deformation Response of Reinforced Concrete Sections”. http://www.ecf.utoronto.ca/~bentz/inter4/inter4.shtml, Visited on 19 March 2013.

Bentz E. 2001. “Response 2000, Shell 2000,Triax 2000 and Membrane 2000”, User Manual. Version 1.1.

Shi-Yu Xu and Jian Zhang., 2008. “Hysteresis Models for Reinforced Concrete Columns Considering Axial-Shear-Flexure Interaction”. The 14th World Conference on Earthquake Engineering October 12-17, Beijing, China.