Page 10 - Petrophysics

Linear Flow through Fractures and Channels, 425
Flow through Fractures, 426
Flow through Solution Channels, 43 1
Radial Flow Systems, 434
Steady-state Flow, 435
Pseudosteady-state Flow, 437
Radial Laminar Flow of Gas, 447
Turbulent Flow of Gas, 452
Linear Turbulent Flow, 452
Friction Factor of Porous Rocks, 459
Turbulent Radial Flow, 466
Multiple-Permeability Rocks, 469
Layered Reservoirs with Crossflow, 469
Layered Reservoirs without Crossflow, 470
Composite reservoirs, 474
Problems, 479
Nomenclature, 483
Greek Symbols, 484
References, 484
CHAPTER 8
Naturally Fractured Reservoirs . . . . . . . . . . . . . . . . . . 488
Introduction, 488
Origin of Permeability in Carbonate Rocks, 490
Geological Classifications of Natural Fractures, 490
Engineering Classification of Naturally Fractured Reservoirs, 492
Indicators of Natural Fractures, 495
Visual Identification of Fractures, 500
Petrophysical Properties of Naturally Fractured Rocks, 500
Fracture Porosity Determination, 502
Porosity Partitioning Coefficient, 506
Fracture Intensity Index, 51 1
Permeability-Porosity Relationships in Double Porosity
Systems, 515
Porosity and Permeability Relationships in Type 1 Naturally
Fractured Reservoirs, 518
Fractures Porosity and Aperture from Cores, 520
Specific Area of Fractures, 524
Effect of Fracture Shape, 526
Hydraulic Radius of Fractures, 527
Type 2 Naturally Fractured Reservoirs, 529
Fluid Flow Modeling in Fractures, 531
Fracture Area, 531
Fracture Storage Capacity, 532
Fracture Conductivity, 533
Characterizing Natural Fractures from Well Test Data, 534
Problems, 548

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