Research Article

Analytical Modeling and Contradictions in Limestone Reservoirs: Breccias, Vugs, and Fractures

Table 4

Data and parameters for the Cardenas Field, well Cardenas-109.

ParameterSymbolValue

Initial reservoir pressure61.54 × 106 Pa
Pressure drop20 Pa
Depth3969 m
Formation thickness270 m
Primary porosity0.015 (fraction)
Primary permeability395 × 10−17 m2
Secondary porosity0.11 (fraction)
Secondary permeability196 × 10−10 m2
Oil viscosity0.00066 Pa·s
Reservoir temperature124°C
Clast radius0.08 m
Vug radius0.03 m
Sink and source1 m2/s
Oil specific gravity (15.6°C)0.720 (dimensionless)