Petrophysical Studies
Typical E-log suites
Deep Resistivity, Gamma Ray, Neutron, Micro-lateral, Sonic, and Density-Neutron
Representative Values for Porosity Calculation
Ros = 25 to 35 % (MLL)
Matrix Transit Time = 47.5 micro sec./ft. in cherty dolomite (sonic)
Shale Porosity = 40% (neutron)
Tite Anhydrite Porosity = 3% (neutron)
Validate Porosity, Sw, and Bulk Volume Water from Pickett Plot
Use Drillstem Test and Production data
Results from Pickett Plot
Identify top of Mississippian Pay
Average Total Porosity & Sw in pay (macro µ)
Identify Transition zone & Oil-Water Contact
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