Core-to-Log Depth Matching — Porosity & Permeability QC with Statistical Validation
Correct core-to-log depth mismatch, validate porosity calibration, and QC your permeability transform — all with RMSE and R² statistics.
TITLE
Core-to-Log Depth Matching — Porosity & Permeability QC with Statistical Validation
PRICE
$89 USD — one-time purchase
TAGLINE
Correct core-to-log depth mismatch, validate porosity calibration, and QC your permeability transform — all with RMSE and R² statistics.
WHO IT'S FOR
Petrophysicists and core analysts integrating core measurements with wireline log data for accurate reservoir characterisation and permeability prediction.
WHAT IT DOES
Calculates the depth shift between core and log reference depths per sample, validates the corrected porosity match, QC's your permeability transform against core measurements, and reports statistical performance metrics (RMSE, R², bias) for both power-law and Winland R35 transforms.
TABS INCLUDED (8)
• Instructions & Legend • Core Depth Data — raw depth, core phi, core k, and log phi per sample • Depth Shift Analysis — shift per sample, bulk shift recommendation, constant vs variable classification • Porosity QC — core phi vs log phi scatter with 1:1 reference line and delta phi bar chart • Summary — shift statistics, match quality, recommendation • Bias & RMSE Analysis — R², RMSE, and mean bias before and after depth correction • Permeability QC — core k vs k Power-law, k Winland R35, percent error per sample • Phi-k Core Crossplot — core phi vs core k scatter with k=0.314×phi^2.15 trend overlay
KEY FEATURES
• Depth shift: constant shift recommended when std dev < 0.5 ft • Porosity QC: ΔPhi = core phi − log phi bar chart per sample • Permeability QC: % error for each transform method, quality flag (Excellent/Good/Fair/Poor) • Statistics summary: RMSE, mean bias, and R² for both transform methods • Phi-k crossplot: power-law trend line from phi=5% to phi=32%
TECHNICAL SPECS
• Excel 2016+ compatible • 93 formulas across 8 tabs • 15-sample dataset included (depths 8010–8150 ft) • MDT professional color scheme
SHOP COPY
8-tab core-to-log workbook: depth shift calculation, porosity QC crossplot, permeability transform QC (power-law + Winland), and RMSE/R²/bias statistics.
SUGGESTED TAGS
core to log, depth matching, depth shift, porosity calibration, permeability QC, Winland R35, petrophysics, core analysis, Excel template, petroleum engineering
ABOUT RESERVOIR RISK SOLUTIONS
Built by petroleum engineers for petroleum engineers. All workbooks require only Microsoft Excel (2016+) — no plugins, no subscriptions. reservoirrisksolutions.com
What you get
- Instant workbook access after payment in your Excel Library
- Formula-driven worksheet designed for petroleum workflows
- No recurring fees and no plugin requirements
FAQ
Is this a one-time purchase?
Yes. Each workbook is sold as a one-time purchase with no recurring subscription.
How do I access purchased files?
After checkout, your file appears in Excel Library under your account for download.
Do these templates require macros or plugins?
No. Templates are designed for Excel 2016+ and do not require VBA macros or external add-ins.
