The Case Studies of Stress Corrosion Cracking in

Preface vii

Fore word ix

Chapter 1 Stress Corrosion Cracking Case Study of 40CrNiMo Drill Pipe Bit in Gas Field 1
1.1 Experimental results and analysis 2
1.2 Observation and Analysis of Microscopic Morphology 4
1.3 Conclusion 12

Chapter 2 Stress corrosion cracking mechanism of 40CrNiMo steel in simulated drilling fluid environment 13
2.1 Test Method 14
2.2 Test results and discussion 15
2.3 Conclusion 26

Chapter 3 Stress corrosion failure cases of P110 pipeline for CO2-driven Oil Recovery 27
3.1 Test results and analysis 28
3.2 Stress Analysis of Pipeline 37
3.3 Cause Analysis of Oil Pipe Cracking 38
3.4 Conclusion 40

Chapter 4 Stress Corrosion Cracking Mechanism of P110 Tubing in Simulated Fluid of Oil Well Annulus 41
4.1 Test Method 42
4.2 Test results and analysis 44
4.3 Analysis of the failure mechanism for tubing stress corrosion 51
4.4 Conclusion 54

Chapter 5 Stress Corrosion Cracking Case Studies of N80 Oil Casing under High CO2 Pressure 55
5.1 Test results and analysis 56
5.2 Stress Analysis of Pipeline 60
5.3 Cause Analysis of Oil Pipe Cracking 61
5.4 Conclusion 62

Chapter 6 Stress Corrosion Cracking mechanism of N80 Pipe Steel under high CO2 pressure 65
6.1 Experimental methods 65
6.2 Test results and analysis 66
6.3 Conclusion 77

Chapter 7 Stress Corrosion Failure Analysis of Stainless Steel and 35CrMo Steel for Oil Tree 79
7.1 Experimental results and analysis 80
7.2 Analysis of Cracking Reasons of Oil Production Tree Material 86
7.3 Conclusion 86

Chapter 8 Stress Corrosion Cracking Mechanism of 00Cr13Ni5Mo Oil Bundle Unit 89
8.1 Experimental Method 90
8.2 Test results and analysis 92
8.3 Discussion 106
8.4 Conclusion 108

Chapter 9 Stress Corrosion Cracking Process of 2205 Duplex Stainless Steel in the Simulated Environment of Oil and Gas Field 109
9.1 Experimental Method 110
9.2 Test results and analysis 111
9.3 Discussion 120
9.4 Conclusion 122

Chapter 10 Stress Corrosion Cracking Case Study of Pipeline Steel in Typical Soil Environment 125
10.1 Experimental methods 126
10.2 Test results and analysis 130
10.3 Discussion 141
10.4 Conclusion 143

Chapter 11 Stress Corrosion Cracking Mechanism of X70 in Acid Soil Environment 145
11.1 Test method 146
11.2 Test results and analysis 149
11.3 Discussion 166
11.4 Conclusion 168

Chapter 12 Stress Corrosion Cracking Case Study of Pipeline Steel in Typical Soil Environment 171
12.1 Experimental methods 171
12.2 Test results and analysis 172
12.3 Discussion 185
12.4 Conclusion 187

Chapter 13 Stress Corrosion Cracking Case Study of Distillation Intake Pipe Welding Seam in Atmospheric-Vacuum Distillation Unit 189
13.1 Test results and analysis 190
13.2 Analysis of corrosion mechanism 199
13.3 Conclusion 200

Chapter 14 Stress Corrosion Cracking Process of Distillation Intake Pipe Welding Seam in Atmospheric-Vacuum Distillation Unit 201
14.1 Experimental method 202
14.2 Experimental results and analysis 202
14.3 Analysis and discussion 211
14.4 Conclusion 212

Chapter 15 Stress Corrosion Cracking Case Study of Catalytic Cracking Units 213
15.1 Experimental analysis of corrosion cracking failure of catalytic cracking unit 214
15.2 Analysis of the Causes of Stress Corrosion Cracking 219
15.3 Conclusion 224

Chapter 16 Stress Corrosion Cracking Mechanism of Fluid Catalytic Cracking Unit 225
16.1 Experimental method 225
16.2 Experimental results and analysis 226
16.3 Analysis and discussion 237
16.4 Conclusion 241

Chapter 17 Stress Corrosion Cracking Case Study of Cold High-Pressure Separator in Hydrocracking Unit 243
17.1 D405 cold and high-pressure separator equipment 244
17.2 Operating Environment of D405 Equipment 246
17.3 Conclusion 251

Chapter 18 Stress Corrosion Cracking Mechanism of 16Mn Steel in Wet H2S Environment 253
18.1 Experimental methods 254
18.2 Experimental results and analysis 254
18.3 Analysis of stress corrosion cracking mechanism 270
18.4 Conclusion 272

Chapter 19 Hydrogen Diffusion and Influencing Factors in Stress Corrosion Cracking of 16Mn Steel in Wet H2S Environment 275
19.1 Experimental methods 275
19.2 Experimental results 276
19.3 Analysis and discussion 281
19.4 Conclusion 283

Chapter 20 Crack Growth Model for Stress Corrosion Cracking of 16Mn steel in Wet H2S Environment 285
20.1 Basic Process of Wet H2S Cracking 286
20.2 Crack Propagation Model for Wet H2S Cracking 287
20.3 Application of crack growth model for wet H2S cracking 290
20.4 Conclusion 297

Chapter 21 Stress Corrosion Cracking Case Study of Glycine Production Plant 299
21.1 Experimental results and analysis 300
21.2 Analysis of Corrosion Failure Mechanism 306
21.3 Conclusion 308

Chapter 22 Stress Corrosion Cracking Mechanism of Glycine Production Plant 309
22.1 Experimental methods 310
22.2 Test results and analysis 311
22.3 Stress Corrosion Mechanisms of 304L Stainless Steel in Glycine Synthesis Medium 319
22.4 Conclusion 321

Afterword 323

Index 325