Page 15 - Fundamentals of Reservoir Engineering

CONTENTS XV

EXERCISES

EXERCISE 1.1 GAS PRESSURE GRADIENT IN THE RESERVOIR 23

EXERCISE 1.2 GAS MATERIAL BALANCE 33

EXERCISE 2.1 UNDERGROUND WITHDRAWAL 50

EXERCISE 2.2 CONVERSION OF DIFFERENTIAL LIBERATION DATA TO GIVE THE
63
FIELD PVT PARAMETERS B o, R s AND B g
EXERCISE 3.1 SOLUTION GAS DRIVE; UNDERSATURATED OIL RESERVOIR 79

EXERCISE 3.2 SOLUTION GAS DRIVE; BELOW BUBBLE POINT PRESSURE 80

EXERCISE 3.3 WATER INJECTION BELOW BUBBLE POINT PRESSURE 85

EXERCISE 3.4 GASCAP DRIVE 87

EXERCISE 4.1 UNITS CONVERSION 108

EXERCISE 6.1 WELLBORE DAMAGE 142

EXERCISE 7.1 ei-FUNCTION: LOGARITHMIC APPROXIMATION 154

EXERCISE 7.2 PRESSURE DRAWDOWN TESTING 157

EXERCISE 7.3 DIMENSIONLESS VARIABLES 162

EXERCISE 7.4 TRANSITION FROM TRANSIENT TO SEMI-STEADY STATE FLOW 166

EXERCISE 7.5 GENERATION OF DIMENSIONLESS PRESSURE FUNCTIONS 184

EXERCISE 7.6 HORNER PRESSURE BUILDUP ANALYSIS, INFINITE RESERVOIR
CASE 200

EXERCISE 7.7 PRESSURE BUILDUP TEST ANALYSIS: BOUNDED DRAINAGE
VOLUME 202

EXERCISE 7.8 MULTI-RATE FLOW TEST ANALYSIS 211

EXERCISE 7.9 AFTERFLOW ANALYSIS TECHNIQUES 231

EXERCISE 8.1 MULTI-RATE GAS WELL TEST ANALYSED ASSUMING STABILIZED
FLOW CONDITIONS 265

EXERCISE 8.2 MULTI-RATE GAS WELL TEST ANALYSED ASSUMING UNSTABILIZED
FLOW CONDITIONS 272

EXERCISE 8.3 PRESSURE BUILDUP ANALYSIS 282

EXERCISE 9.1 APPLICATION OF THE CONSTANT TERMINAL PRESSURE SOLUTION307

EXERCISE 9.2 AQUIFER FITTING USING THE UNSTEADY STATE THEORY OF HURST
AND VAN EVERDINGEN 310