Journal of Canadian Petroleum Technology
Volume 50,
Number 6,
June 2011,
pp. 53-60
Summary
In this work, the Das and Butler flow model was extended to account for the
effect of differential pressure across a laterally and vertically spaced
horizontal injection- and production-well pair for solvent vapour extraction
(SVX) processes. The extended model provides a more-rigorous
dispersion-coefficient correlation using interstitial pore velocity and mean
particle size. This was used to history match oil-production data from
3D-scaled physical model experiments and to determine the effective dispersion
coefficient of the solvent in heavy oil. The SVX experiments were performed
with two model sizes and three different permeabilities spanning than two
orders of magnitude. Laterally spaced horizontal wells were used to inject an
86:14 mol% mixture of butane and methane, respectively, as a dense vapour. The
average dispersion coefficient of solvent (butane) was found to decrease with
injected cumulative solvent and increase with reduction in permeability, and
both of these relationships could be approximated with an inverse power
function.
© 2011. Society of Petroleum Engineers
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History
- Original manuscript received:
4 August 2010
- Revised manuscript received:
15 April 2011
- Manuscript approved:
19 April 2011
- Version of record:
9 June 2011
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