Data obtained from pressure and flow rate for test and reference fluids are used to calculate {HEAD ~ percent change} in permeability and {TAIL ~ actual permeability} using Darcys Law 
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Data obtained from pressure and flow rate for test and reference fluids are used to calculate { HEAD ~ percent change } in permeability and { TAIL ~ actual permeability } using Darcys Law
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH