Journal of Canadian Petroleum Technology
Volume 49, Number 11, November 2010, pp. 69-80

SPE-140783-PA

Determining Effective Fluid Saturation, Relative Permeability, Heterogeneity and Displacement Efficiency in Drainage Zones of Oil Wells Producing Under Waterdrive

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DOI  More information 10.2118/140783-PA http://dx.doi.org/10.2118/140783-PA

Citation

  • Tóth, J., Bódi, T., Szucs, P., and Civan, F. 2010. Relative Permeability, Heterogeneity and Displacement Efficiency in Drainage Zones of Oil Wells Producing Under Waterdrive. J Can Pet Technol  49 (11): 69–80. SPE-140783-PA. doi: 10.2118/140783-PA

Discipline Categories

  • 6.4.1 Waterflooding

Keywords

  • waterflooding, immiscible displacement, two-phase flow, well drainage, relative permeability

Summary

A convenient, practical method is applied for rapid analysis and interpretation of after-water-breakthrough history of oil wells producing under waterdrive for determination of effective fluid saturation, relative permeability, heterogeneity and displacement efficiency. Formulation and methodology are presented for the characterization of parameters of radial unsteady-state flow of oil and water through producing-well drainage regions in oil reservoirs. Validity and capabilities of this approach for diagnosis of conditions in production-well drainage zones in waterdrive reservoirs are confirmed by analysis of typical oil field case scenarios. The present approach is proven to yield significant information of practical importance that can be used for effective selection of potential enhanced oil recovery (EOR)/improved oil recovery (IOR) methods for oil reservoirs.

© 2010. Society of Petroleum Engineers

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History

  • Original manuscript received: 11 March 2009
  • Revised manuscript received: 30 July 2010
  • Manuscript approved: 14 July 2010
  • Published online: 1 November 2010
  • Version of record: 1 November 2010