SPE Journal
Volume 18,
Number 2,
April 2013,
pp. 243-263
Summary
Carbonate rocks are complex in structure and pore geometry and display
heterogeneity on all length scales. In this paper, carbonate rocks are
described on the basis of their contents and pore geometry for use in
pore-scale modeling. Definitions of grains and porosities are based on other
carbonate-rock classifications; we did not invent new concepts. On the basis of
carbonate content (grain, mud, and cement), carbonate rocks were divided into
three types: muddy, grainy, and mixed. Each type was divided into subtypes on
the basis of pore geometries defined by other researchers. Pore-size
distribution of Lønøy (2006) was used for each subtype. We review existing
carbonate-rock models and suggest approaches, and show preliminary
flow-simulation results, for pore-scale modeling of different grains, cement,
and pore geometry in these complex rocks.
© 2012. Society of Petroleum Engineers
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History
- Original manuscript received:
21 July 2011
- Revised manuscript received:
10 August 2012
- Manuscript approved:
15 August 2012
- Published online:
14 December 2012
- Version of record:
5 April 2013
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