Page 9 - Petrophysics

Limiting Centrifuge Speed, 334
Approximate Calculation of the Inlet Saturation, 336
Theoretically Exact Calculation of the Inlet Saturation, 338
Pore Size Distribution, 342
Vertical Saturation Profile in a Reservoir, 346
Capillary Number, 352
Problems, 355
Nomenclature, 356
Greek Symbols, 357
References, 357

CHAPTER 6
Wettability.. . . . . . . . . . . . . . . . . . . . . . . . . . . .360
Wettability, 360
Interfacial Tension, 361
Contact Angle, 362
Sessile Drop Measurement of Contact Angles, 364
Wilhelmy Plate Measurement of Contact Angles, 366
Surface Chemical Properties, 367
Evaluation of Wettability, 371
Amott Wettability Index, 371
USBM Wettability Index, 373
Combined Amott-USBM Wettability Test, 375
Spontaneous Imbibition Wettability Test, 377
Fluid Displacement Energy, 378
Waterail-Rock Interfacial Activity, 382
Effect of Wettability on Oil Recovery, 384
Effect of Brine Salinity on Oil Recovery, 389
Alteration of Wettability, 390
Treatment of the Rock, 390
Addition of Fluid-Soluble Compounds to Water and Oil, 391
Aging the Oil-Brine-Rock System, 394
Effects of Temperature and Pressure, 395
Restoration of Original Wettability, 397
Efect of Wettability on Electrical Properties, 398
Problems, 403
Nomenclature, 404
Greek Symbols, 405
Subscripts, 406
References, 406

CHAPTER 7
Applications of Darcy’s Law. . . . . . . . . . . . . . . . . . . .415
Darcy’s Law, 416
Linear Flow of Incompressible Fluids, 4 17
Linear Flow of Gas, 420
Darcy’s and Poiseuille’s Laws, 424

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