Linear Flow through Fractures and Channels,425 Flow through Fractures,426 Flow through Solution Channels,431 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 CHAPTER8 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,511 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 xiLinear Flow through Fractures and Channels, 425 Flow through Fractures, 426 Flow through Solution Channels, 43 1 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 Layered Reservoirs with Crossflow, 469 Layered Reservoirs without Crossflow, 470 Composite reservoirs, 474 Radial Flow Systems, 434 Multiple-Permeability Rocks, 469 Problems, 479 Nomenclature, 483 References, 484 Greek Symbols, 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 Fracture Area, 531 Fracture Storage Capacity, 532 Fracture Conductivity, 533 Fluid Flow Modeling in Fractures, 531 Characterizing Natural Fractures from Well Test Data, 534 Problems, 548 xi