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Index
Cover image
Title page
Table of Contents
Copyright
Dedication
Preface: 4th Edition of Petrophysics
Acknowledgments
About the Authors
Units
References
Chapter 1: Introduction
Abstract
Introduction to Mineralogy
Mineral Constituents of Rocks: A Review
Properties of Sedimentary Particles
Development and use of Petrophysics
Problems
Glossary
Chapter 2: Introduction to Petroleum Geology
Abstract
Review of Composition of the Globe
Plate Tectonics
Geologic Time
Sedimentary Geology
Hydrocarbon Traps
Origin of Petroleum
Migration and Accumulation of Petroleum
Properties of Subsurface Fluids
Petroleum
Petroleum Chemistry
Problems
Chapter 3: Porosity and Permeability
Abstract
Introduction
Porosity
Factors Governing the Magnitude of Porosity
Engineering Classification of Porosity
Geological Classification of Porosity
Visual Description of Porosity in Carbonate Rocks
Fluid Saturation
Quantitative Use of Porosity
Permeability
Classification of Permeability
Factors Affecting the Magnitude of Permeability
Permeability-Porosity Relationships
Kozeny Correlation
Concept of Flow Units
Mathematical Theory of Flow Units
Specific Surface Area
Flow Unit Characterization Factors
Flow Units Functions
Reservoir Zonation Using Normalized RQI
Effect of Packing on Permeability
Effect of Water Saturation on Permeability
Permeability from NMR
Permeability from GR Logs
Permeability-Porosity Relationships in Carbonate Rocks
Directional Permeability
Reservoir Heterogeneity
Distribution of Rock Properties
Permeability and Porosity Distributions
Permeability from Well Test Data
Statistical Zonation Technique
Problems
Chapter 4: Formation Resistivity and Water Saturation
Abstract
Formation Resistivity Factor
Resistivity Measurement
Determination of Formation Water Resistivity
Spontaneous Potential Curve
Shale-Properties Method
Correlation Between FR and Porosity
Correlations Between FR and Tortuosity
Correlations Between FR and Cementation
Theoretical Formula for FR
Correlation Between FR and Water Saturation
Correlation Between FR and Permeability
Resistivity of Shaly (Clayey) Reservoir Rocks
Water Saturation in Shaly (Clayey) Reservoir Rocks
Approximate Shale Relationship
Generalized Shale Relationship
Flow Units for Shaly Sandstones
Lab-Derived Evaluation of Shaly (Clayey) Reservoir Rocks
Log-Derived Evaluation of Shaly (Clayey) Reservoir Rocks
Formation Evaluation
Core Analysis
Well Log Analysis
Water Saturation
Core Interpretation of Data
Interpretation of Well Log Data
Problems
Chapter 5: Capillary Pressure
Abstract
Introduction
Derivation of the Capillary Pressure Equation
Capillary Rise
Semipermeable Disk Measurement of Capillary Pressure
Centrifuge Measurement of Capillary Pressure
Measurement of Capillary Pressure by Mercury Injection
Pore-Size Distribution
Vertical Saturation Profile in a Reservoir
Capillary Pressure J-Function
Capillary Number
Problems
Chapter 6: Wettability
Abstract
Wettability
Interfacial Tension
Contact Angle
Sessile Drop Measurement of Contact Angles
Wilhelmy Plate Measurement of Contact Angles
Surface Chemical Properties
Evaluation of Wettability
Spontaneous Imbibition Wettability Test
Fluid Displacement Energy
Water-oil-Rock Interfacial Activity
Effect of Wettability on Oil Recovery
Alteration of Wettability
Treatment of the Rock
Effects of Temperature and Pressure
Fractional Flow Equation
Problems
Chapter 7: Applications of Darcy’s Law
Abstract
Darcy’s Law
Linear Flow of Incompressible Fluids
Linear Flow of Gas
Darcy’s and Poiseuille’s Laws
Linear Flow Through Fractures and Channels
Flow Through Fractures
Flow Through Solution Channels
Radial Flow Systems
Steady-State Flow
Pseudosteady-State Flow
Skin Zone
Dimensionless Pressure
Radial Laminar Flow of Gas
Turbulent Flow of Gas
Linear Turbulent Flow
Friction Factor of Porous Rocks
Turbulent Radial Flow
Multiple-Permeability Rocks
Layered Reservoirs With Crossflow
Layered Reservoirs Without Crossflow
Composite Reservoirs
Linear Flow Systems
Radial Flow Systems
Problems
Chapter 8: Naturally Fractured Reservoirs
Abstract
Introduction
Origin of Permeability in Carbonate Rocks
Geological Classifications of Natural Fractures
Engineering Classification of Naturally Fractured Reservoirs
Indicators of Natural Fractures
Visual Identification of Fractures
Petrophysical Properties of Naturally Fractured Rocks
Fracture Porosity Determination
RQI, FZI, and m for Carbonates
Porosity Partitioning Coefficient
Fracture Intensity Index
Permeability-Porosity Relationships in Double Porosity Systems
Porosity and Permeability Relationships in Type 1 Naturally Fractured Reservoirs
Fractures Porosity and Aperture from Cores
Specific Area of Fractures
Effect of Fracture Shape
Hydraulic Radius of Fractures
Type 2 Naturally Fractured Reservoirs
Fluid Flow Modeling in Fractures
Fracture Area
Fracture Storage Capacity
Fracture Conductivity
Characterizing Natural Fractures from Well-Test Data
Fracture Porosity and Permeability from Pressure Tests
Fracture Corridors in Carbonates
Problems
Chapter 9: Effect of Stress on Reservoir Rock Properties
Abstract
Static Stress-Strain Relation
Stress Analysis
Strain Analysis
Two-Dimensional Stress-Strain Systems
Rock Deformation
Hooke’s Law
Stress-Strain Diagrams
The Mohr Diagram
Dynamic Elastic Properties
Dynamic versus Static Modulus of Elasticity
Rock Strength and Hardness
Rock Hardness
Compressibility of Porous Rocks
Pore Compressibility
Effectiveness of Pore Pressure in Countering Stress
Rock Compressibility Correlations
Effect of Pore Compressibility on Reserves Calculations
Converting Lab Data to Reservoir Data
Effect of Stress on Core Data
Effect of Stress on Porosity
Effect of Stress on Permeability
Effect of Stress on Resistivity
Porosity-Permeability-Stress Relationship
Effect of Stress on Fracturing
Effect of Poisson’s Ratio on Fracture Gradient
FG for Offshore Wells
Effect of Poisson’s Ratio on Fracture Dimensions
In Situ Stress Distribution
Effect of Stress Change on Rock Failure
Change in Stress Field due to Depletion and Repressurization
Stress Relationship at the Wellbore
Estimating Critical Borehole Pressure in Vertical Wells Overbalanced Conditions
Balanced and Underbalanced Conditions
Critical Borehole Pressure in Horizontal Wells
Overbalanced Conditions
Underbalanced Conditions
Critical Pore Pressure
Example of a North Sea Reservoir
Stress Field and Reservoir Stress Paths
Analysis
Porosity as Strength Indicator to Evaluate Sand Production
Problems
Additional Sample Data
Chapter 10: Reservoir Characterization
Abstract
Introduction
Reservoir Volumes
Hydraulic Flow Units
Mobility Ratio
J-Function
Analysis of Reservoir Performance
Decline Curves
Material Balance
Development of the General Material Balance Equation
Straight-line Solution of the Material Balance Equation
Basic Well-log Interpretation
Problems
Chapter 11: Fluid-Rock Interactions
Abstract
Introduction
Importance of Near-Wellbore Permeability
Nature of Permeability Damage
Origin of Permeability Damage
Types of Permeability Damage
Effect of Fines Migration on Permeability
Types and Sizes of Fines
Fines Migration
Chemical Damage
Mechanical Damage
Migration of Foreign Solids
Critical Velocity Concept
Entrainment and Surface Deposition
Entrainment and Plugging
Identification of Permeability Damage Mechanisms
Permeability Damage from Foreign Solids
Permeability Damage from Formation Fines
Effect of Water Quality on Permeability
External Filter-Cake Buildup
Internal Filter-Cake Buildup
Injectivity Decline from Plugging of Perforations
Impairment from Wellbore Fill-Up
Membrane Filtration Tests
Core Filtration Tests
External Filter-Cake Formation
Internal Filter-Cake Formation
Problems
Chapter 12: Shale-Gas Reservoirs
Unconventional Hydrocarbon Generation
Kerogen and Total Organic Content
Rock-Evaluation Pyrolysis
Vitrinite Reflectance
Petrophysical Evaluation
Total Porosity
Effective Porosity
Total Gas in Place in Shale-Gas Reservoirs
Two-Volume Petrophysical Model
Gas Recovery Factor
Free Gas in Place (Gf)
Three-Volume Petrophysical Model
Empirical Correlations of TOC
Permeability
Problems
Appendix A: Measurement of Rock and Fluid Properties
Experiment 1: Fluid Content of Rocks by the Retort Method
Experiment 2: Measurement of Saturation by Solvent Extraction
Experiment 3: Density, Specific Gravity, and API Gravity
Experiment 4: Specific Gravity of Gases
Experiment 5: Viscosity
Experiment 6: Fluorescence
Experiment 7: Absolute and Effective Porosity
Experiment 8: Sieve Analysis (Particle-Size Distribution)
Experiment 9: Surface Area of Sediments
Experiment 10: Absolute Permeability
Experiment 11: Absolute Permeability Measured with a Gas
Experiment 12: Relative Permeability
Experiment 13: Surface and Interfacial Tensions
Experiment 14: Capillary Pressure
Experiment 15: Determination of Z-Factors for Imperfect Gases
Experiment 16: Basic Sediment and Water Analysis (BS&W)
Experiment 17: Point-Load Strength Test
Appendix B: Computer Programs
Introduction
Index
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