PfEFFER Worksheet Layout
- Home area with computed parameters
- Computations (links) keyed on RT, PHI (resistivity, porosity)
via Archie equation
- "whole-unit" parameters in column B
- Attribute columns for auxiliary information
- used for color-coding points on Pickett Plot
- available for log vs. depth plots
- Input logs, additional computations to right
PfEFFER Spreadsheet
Columns in the home area
- PARAMETERS (column B)
- well info, model parameters, summary values
- ZN, DEPTH, THK:
- zone label, depth, thickness
- RT, PHI:
- Bulk resistivity, porosity (fractional!)
- Derived from input logs on right
- RWA, RO, MA:
- Apparent formation water resistivity, water-saturated resistivity,
and cementation exponent
- SW: Water saturation
- BVW: Bulk volume water (SW*PHI)
- VSH: Shale proportion
- computed from input logs using Vsh button
- Pay: Incremental thickness of oil
- set to zero if PHI, SW, BVW, or VSH outside user-specified
cut-offs
- THK*PHI*(1-SW) otherwise
- Flow: Zonation