Oil Drilling and Recovery
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Copyright, Chevron, 1996
Oil and gas flow from an oil well is not as easy as it may seem. There
are many problems with modeling the flow through the porous media.
Modeling the flow as accurately as possible is important because it
dictates how much oil a company can recover from the oil field.
Equations governing the flow come from mass balances and Darcy's Law,
which states that velocity is proportional to the pressure gradient.
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This equation is an overall hydrocarbon balance on the oil found in the
field.
In general, what this equation form is saying is that the flow in minus
the flow plus the generation of oil is equal to any accumulation of oil
and gas.
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This equation is a hydrocarbon component balance.
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This equation is a mole balance on the water that may be present in the
oil field and porous media.
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