Changes

Jump to navigation Jump to search
no edit summary
Line 14: Line 14:  
  | isbn    = 0-89181-602-X
 
  | isbn    = 0-89181-602-X
 
}}
 
}}
The rate of migration for oil or gas can be estimated using [[Fluid flow fundamentals|Darcy's law]], the principal formula for calculating [[permeability]]. Darcy's law generally holds for rocks with tube-shaped pore systems; however, it is only an approximation for flow in rocks with high percentages of clays, like shales, due to the platey grain shape of the clays. The [[Wikipedia:Kozeny–Carman equation |Kozeny–Carman correction]] estimates the permeability of rocks with high percentages of clays.
+
The rate of [[Hydrocarbon migration|migration]] for [[oil]] or [[gas]] can be estimated using [[Fluid flow fundamentals|Darcy's law]], the principal formula for calculating [[permeability]]. Darcy's law generally holds for rocks with tube-shaped pore systems; however, it is only an approximation for flow in rocks with high percentages of [[clay]]s, like [[shale]]s, due to the platey grain shape of the clays. The [[Wikipedia:Kozeny–Carman equation |Kozeny–Carman correction]] estimates the [[permeability]] of rocks with high percentages of clays.
    
==Procedure==
 
==Procedure==
The procedure for calculating the migration rate of oil or gas is outlined in the table below.
+
The procedure for calculating the [[Hydrocarbon migration|migration]] rate of oil or gas is outlined in the table below.
    
# Gather data, including [[permeability]] of carrier beds, [[Wikipedia:Viscosity|viscosity]] of oil, fluid density, and [http://www.glossary.oilfield.slb.com/en/Terms/p/pore_pressure.aspx pore pressure] gradient.
 
# Gather data, including [[permeability]] of carrier beds, [[Wikipedia:Viscosity|viscosity]] of oil, fluid density, and [http://www.glossary.oilfield.slb.com/en/Terms/p/pore_pressure.aspx pore pressure] gradient.
Line 69: Line 69:     
==Minimum buoyancy pressure for migration==
 
==Minimum buoyancy pressure for migration==
Migration upslope under a seal occurs when buoyancy is greater than capillary pressure, or
+
[[Hydrocarbon migration|migration]] [[upslope]] under a seal occurs when buoyancy is greater than capillary pressure, or
    
:<math>\mbox{g} \times \mbox{l} \times \sin \mbox{Q} \times (\rho_{\rm w} - \rho_{\rm hc}) > 2\gamma</math>
 
:<math>\mbox{g} \times \mbox{l} \times \sin \mbox{Q} \times (\rho_{\rm w} - \rho_{\rm hc}) > 2\gamma</math>

Navigation menu