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Empirical Estimates of Primary Oil Recovery
Several attempts have been made to correlate primary oil recovery with reservoir parameters [239-2421. Based…
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Petroleum Reservoir
Accumulations of oil and gas occur in underground traps that are formed by structural and/or…
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Important Pressure Transient Analysls Equations
In the equation for skin factor during the pressure buildup, P, is measured just before…
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Effective Penneabllitles
In the previous section, "Absolute Permeability," it was stated that permeability at 100% saturation of…
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Capillary Pressure
Curvature at an interface between wetting and nonwetting phases causes a pressure difference that is…
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Wettability and Contact Angle
The contact angle (ec), existing between two fluids in contact with a solid and measured…
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Surface and lnterfaclal Tensions
The term interface indicates a boundary or dividing line between two immiscible phases. Types of…
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Resistivity Index
Since crude oil and natural gas are nonconductors of electricity, their presence in reservoir rock…
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Total Reservolr Compressibility
The total compressibility of oil- or gas-bearing reservoirs represents the combined compressibilities of oil, gas,…
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Formation Resistivity Factor
The formation resistivity factor, FR, is the ratio of the resistivity of a porous medium…