This Reference Manual covers all topics needed to calculate shale volume, porosity, lithology, water saturation, permeability, net pay, oil and gas in place, flow capacity, and initial productivity from modern well logs. This is a practical, no-nonsense eText covering both visual and numerical analysis methods, with numerous real-world exercises.

RF-01: 160 pages, 12 chapters, detailed table of contents, 10 real-world examples, computer-ready math, access to META/LOG spreadsheet software,

RECOMMENDED FOR: all geoscientists, geotechs, engineers, managers and CEO's.


AV-01 Crain's Practical Quantitative Petrophysics

Put my 50 years of practical petrophysical experience to work for you.


License:   Single-User • Corporate Academic



1.00 Integrated Petrophysics
1.01 What Is Well Logging?
1.02 Organizing Your Work
1.03 Calculators, Computers, and the Math Hierarchy
1.04 Spreadsheets for Log Analysis

2.00 The Step by Step Procedure
2.01 The Analysis Model
2.02 The Formation Rock Model with Definitions
2.03 The Log Response Equation
2.04 Using The Log Response Equation
2.05 Integration – Calibrating to Ground Truth

3.00 Cran’s Rules For Visual Analysis Of Logs
3.01 Crain’s Rules For Picking Log Data
3.02 Crain’s Rules For Choosing Analysis Parameters

4.00 Shale Basics
4.01 Clay Basics
4.02 Calculating Shale Volume

5.00 Porosity Basics
5.01 Porosity in Sandstones
5.02 Porosity in Carbonates
5.03 Calculating Effective Porosity
5.04 Porosity From The Complex Lithology Density Neutron Crossplot
5.05 Porosity From The Sonic Log
5.06 Porosity From The Density Log
5.07 Porosity From The Neutron Log
5.08 Material Balance for Porosity (Maximum Porosity Method)
5.09 Useful Porosity
5.10 Porosity From The Nuclear Magnetic Resonance Log
5.11 Fracture Porosity
5.12 Porosity from Old ES Logs

6.00 Lithologic Analysis of Matrix Rock Volume
6.01 Two Mineral Lithology From Matrix Density
6.02 Lithology From Sonic Density Neutron Data
6.03 Lithology From PE Density Neutron Log
6.04 Lithology From Spectral Gamma Ray Log
6.05 Lithology From Vp/Vs Velocity Ratio


7.00 Formation Water Resistivity
7.01 Water Resistivity From Catalog or Well Test
7.02 Water Resistivity From Water Zone (R0 and Rwa Method)
7.03 Water Resistivity From Spontaneous Potential

8.00 Water and Hydrocarbon Saturation
8.01 Determination of Saturation Parameters
8.02 Pore Geometry and Variable “M” Method
8.03 Water Saturation from Archie Method
8.04 Water Saturation from Simandoux Method
8.05 Water Saturation from Dual Water Method
8.06 Water Saturation from Buckles Number
8.07 Irreducible Water Saturation
8.08 Moveable Oil Saturation

9.00 Permeability and Productivity
9.01 Permeability from the Wyllie-Rose Method
9.02 Permeability from Porosity
9.03 Permeability from the Coates Method
9.04 Fracture Permeability

10.00 Net Pay and Cutoffs
10.01 Cumulative and Average Reservoir Properties
10.02 Fluid Properties and Reserves
10.03 Productivity Index and Water Cut

11.00 Beyond Log Analysis
11.01 Productivity From Drill Stem and Production Tests
11.02 Production Projection and Cash Flow

12.00 Case Histories
12.01 Cretaceous Clean and Shaly Sand
12.02 Triassic Dolomitic Sand
12.03 Devonian Carbonate Reef
12.04 Bitumen Bearing Oil Sand

13.00 List of Abbreviations


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