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Line 18: − + − The figure below shows the petrophysical characteristics of the main Weyburn reservoir facies: ''Ortonella''-bearing vuggy wackestones to packstones. The sample is macroporous, its pore system dominated by large pores and pore throats. The capillary pressure curve shows relatively low entry (and presumably breakthrough) pressure. The port size (r<sub>35</sub>) of the sample is approximately 3μ. − + + +
Midale lithofacies and distribution (view source)
Revision as of 21:37, 12 February 2014
, 21:37, 12 February 2014→Reservoir SEM and capillary pressure curve
The Midale in the Weyburn area is carbonates and evaporites deposited near a low-energy shoreline on a marine ramp. The main producing carbonate facies (“vuggy pack-stone” facies) is shoal deposits of fossiliferous, peloidal, ''Ortonella''-bearing nodular wacke-stones to grainstones. The principal occluding cements are sparry calcite and anhydrite.
The Midale in the Weyburn area is carbonates and evaporites deposited near a low-energy shoreline on a marine ramp. The main producing carbonate facies (“vuggy pack-stone” facies) is shoal deposits of fossiliferous, peloidal, ''Ortonella''-bearing nodular wacke-stones to grainstones. The principal occluding cements are sparry calcite and anhydrite.
==Reservoir SEM and [[capillary pressure]] curve==
==Reservoir SEM and capillary pressure curve==
[[file:predicting-reservoir-system-quality-and-performance_fig9-99.png|thumb|{{figure number|9-99}}See text for explanation.]]
[[file:predicting-reservoir-system-quality-and-performance_fig9-99.png|thumb|{{figure number|1}}See text for explanation.]]
[[:file:predicting-reservoir-system-quality-and-performance_fig9-99.png|Figure 1]] shows the petrophysical characteristics of the main Weyburn reservoir facies: ''Ortonella''-bearing vuggy wackestones to packstones. The sample is macroporous, its pore system dominated by large pores and pore throats. The capillary pressure curve shows relatively low entry (and presumably breakthrough) pressure. The port size (r<sub>35</sub>) of the sample is approximately 3μ.
==Nonproductive facies==
==Nonproductive facies==