Page 507 - Petrophysics
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MULTIPLE-PERMEABILITY ROCKS 47s
Figure 7.16. Typical composite reservoir,
L
Figure 7.17. linear Pow through segments in series.
Linear Flow Systems
Figure 7.17 depicts a linear flow system, which consists of a number
of homogeneous segments of different permeability arranged in series.
The total pressure drop across this system is equal to the sum of the
pressure drops across each segment. Thus:
The individual pressure drops can be expressed, assuming flow of
incompressible fluid under steady state, as:
Api = (-)- qCL r, (7.156)
A ki
