petroleum production 2 min read
Effective Penneabllitles
In the previous section, “Absolute Permeability,” it was stated that permeability at 100% saturation of a fluid (other than gases…
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Capillary Pressure
Curvature at an interface between wetting and nonwetting phases causes a pressure difference that is called capillary pressure. This pressure…
petroleum production 3 min read
Wettability and Contact Angle
The contact angle (ec), existing between two fluids in contact with a solid and measured through the more dense phase,…
petroleum production 4 min read
Surface and lnterfaclal Tensions
The term interface indicates a boundary or dividing line between two immiscible phases. Types of interfaces include: liquid-gas, liquid-liquid, liquidsolid,…
petroleum production 2 min read
Resistivity Index
Since crude oil and natural gas are nonconductors of electricity, their presence in reservoir rock increases resistivity. The resistivity index…
petroleum production 2 min read
Total Reservolr Compressibility
The total compressibility of oil- or gas-bearing reservoirs represents the combined compressibilities of oil, gas, water, and reservoir rock in…
petroleum production 2 min read
Formation Resistivity Factor
The formation resistivity factor, FR, is the ratio of the resistivity of a porous medium that is completely saturated with…
petroleum production 2 min read
Properties of Fluid-Containing Rocks
Porosity The porosity, 4, is equal to the void volume of the rock divided by the bulk volume and is…
petroleum production 1 min read
Units and Conversions
We have used “oilfield” units throughout the text, even though this system of units is inherently inconsistent. We chose this…
petroleum production 3 min read
Well Productivity and Production Engineering
Many of the components of the petroleum production system can be considered together by graphing the inflow performance relationship (IPR)…
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The Surface Equipment
After the fluid reaches the top, it is likely to be directed toward a manifold connecting a number of wells.…
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The Zone near the Well, the Sandface, and the Well Completion
The zone surrounding a well is important. First, even without any man-made disturbance, converging, radial flow results in a considerable…