Front Cover......Page 1
WELL TEST ANALYSIS: THE USE OF ADVANCED INTERPRETATION MODELS......Page 4
Copyright Page......Page 5
CONTENTS......Page 8
PREFACE......Page 6
1.1 Introduction......Page 14
1.2 Typical flow regimes......Page 19
1.3 Well and reservoir characterization......Page 35
2.1 Log-log scale......Page 38
2.2 Pressure curves analysis......Page 39
2.3 Pressure derivative......Page 49
2.4 The analysis scales......Page 58
3.1 Well with wellbore storage and skin......Page 60
3.2 Infinite conductivity or uniform flux vertical fracture......Page 68
3.3 Finite conductivity vertical fracture......Page 75
3.4 Well in partial penetration......Page 82
3.5 Slanted well......Page 92
3.6 Horizontal well......Page 94
3.7 Skin factors......Page 125
CHAPTER 4. EFFECT OF RESERVOIR HETEROGENEITIES ON WELL RESPONSES......Page 128
4.1 Fissured reservoirs......Page 129
4.2 Layered reservoirs with or without crossflow......Page 173
4.3 Composite reservoirs......Page 193
4.4 Combined reservoir heterogeneities......Page 211
5.1 Single sealing fault in a homogeneous reservoir......Page 218
5.2 Two parallel sealing faults in homogeneous reservoir......Page 223
5.3 Two intersecting sealing faults in homogeneous reservoir......Page 231
5.4 Closed homogeneous reservoir......Page 238
5.5 Constant pressure boundary......Page 251
5.6 Communicating fault......Page 256
5.7 Effect of boundaries in double porosity reservoirs......Page 265
5.8 Effect of boundaries in double permeability reservoirs......Page 270
5.9 Effect of boundaries in composite reservoirs......Page 275
5.10 Other boundary configurations......Page 279
5.11 Conclusion......Page 282
CHAPTER 6. MULTIPLE WELL TESTING......Page 286
6.1 Interference tests in reservoirs with homogeneous behavior......Page 287
6.2 Factors complicating interference tests in reservoirs with homogeneous behavior......Page 294
6.3 Interference tests in composite reservoirs......Page 298
6.4 Interference tests in double porosity reservoirs......Page 303
6.5 Interference tests in layered reservoirs......Page 310
6.6 Pulse testing......Page 312
6.7 Conclusion......Page 315
7.1 Description of gas wells pressure behavior......Page 316
7.2 Practical transient analysis of gas well tests......Page 318
7.3 Deliverability tests......Page 326
7.4 Field example......Page 332
CHAPTER 8. APPLICATION TO MULIPHASE RESERVOIRS......Page 334
8.1 Perrine's method......Page 335
8.2 Pseudo-pressure method......Page 337
8.3 Pressure squared method......Page 340
9.1 DST......Page 344
9.2 Impulse test......Page 350
9.3 Constant pressure test, and rate decline analysis......Page 353
9.4 Vertical interference test......Page 359
10.1 Factors complicating well test analysis......Page 364
10.2 Interpretation procedure......Page 377
10.3 Well and reservoir characterisation- interpretation results......Page 384
APPENDIX 1. SUMMARY OF USUAL LOG-LOG RESPONSES......Page 390
APPENDIX 2. PRACTICAL METRIC SYSTEM OF UNITS......Page 395
NOMENCLATURE......Page 409
REFERENCES......Page 414
AUTHOR INDEX......Page 426
SUBJECT INDEX......Page 429