Part I. Fundamental Concepts and Generalizations 1. Fluid Sampling, Pressure Transient and Contamination Analysis 2. Physical Concepts and Numerical Approaches 3. Multiprobe Model Formulations and Validations Part II. Four-Probe Algorithms 4. Single-Phase, Four-Probe Flows - Conventional, Overbalanced and Underbalanced Drilling Applications 5. Convective-Diffusion, Four-Probe Model for Pressure and Contamination Part III. Triple-Probe Algorithms 6. Single-Phase, Triple-Probe Flows - Conventional, Overbalanced and Underbalanced Drilling Applications 7. Multiphase Triple-Probe Flows - Coupled Models for Pressure and Contamination 8. Convergence Acceleration, Batch Processing and Inverse Methods for Permeability Prediction 9. Gas Pumping with Multiprobe Tools 10. Axial Multiprobe, Reservoir Characterization, and Geothermal Issues