Changes

==Reservoir character==

==Reservoir character==

[[file:predicting-reservoir-system-quality-and-performance_fig9-102.png|300px|thumb|{{figure number|1}}Crossplot of routine core porosity and permeability from Midale in an example well at Weyburn field. Copyright: Coalson et al.;<ref name=Coalson1994>Coalson, E. B., S. M. Goolsby, and M. H. Franklin, 1994, Subtle seals and fluid-flow barriers in carbonate rocks, in J. C. Dolson, M. L. Hendricks, and W. A. Wescott, eds., Unconformity Related Hydrocarbons in Sedimentary Sequences: RMAG Guidebook for Petroleum Exploration and Exploitation in Clastic and Carbonate Sediments, p. 45–58.</ref> courtesy RMAG.]]

[[file:predicting-reservoir-system-quality-and-performance_fig9-102.png|300px|thumb|{{figure number|1}}Crossplot of routine core porosity and permeability from the Midale in an example well at Weyburn field. Copyright: Coalson et al.;<ref name=Coalson1994>Coalson, E. B., S. M. Goolsby, and M. H. Franklin, 1994, Subtle seals and fluid-flow barriers in carbonate rocks, in J. C. Dolson, M. L. Hendricks, and W. A. Wescott, eds., Unconformity Related Hydrocarbons in Sedimentary Sequences: RMAG Guidebook for Petroleum Exploration and Exploitation in Clastic and Carbonate Sediments, p. 45–58.</ref> courtesy RMAG.]]

Good reservoir properties are seen in the vuggy packstone facies, congruent with the observed pore geometries. Permeabilities in rock with only 10% porosity are as high as 10 md.

Good reservoir properties are seen in the vuggy packstone facies, congruent with the observed pore geometries. Permeabilities in rock with only 10% porosity are as high as 10 md.

[[:file:predicting-reservoir-system-quality-and-performance_fig9-102.png|Figure 1]] is a crossplot of routine core [[porosity]] and [[permeability]] from Midale in an example well at Weyburn field. The diagonal lines are contours of equal [[Characterizing_rock_quality#What_is_r35.3F|r₃₅]] values. On the plot, vuggy packstone facies (group A; data points 3, 4, 6, and 8) are characterized by lower porosity but higher permeability.

[[:file:predicting-reservoir-system-quality-and-performance_fig9-102.png|Figure 1]] is a crossplot of routine core [[porosity]] and [[permeability]] from the Midale in an example well at Weyburn field. The diagonal lines are contours of equal [[Characterizing_rock_quality#What_is_r35.3F|r₃₅]] values. On the plot, vuggy packstone facies (group A; data points 3, 4, 6, and 8) are characterized by lower porosity but higher permeability.

==Nonreservoir pore geometry and pore type==

==Nonreservoir pore geometry and pore type==