Stress Corrosion Cracking of High-strength Drill Pipe in Sour Gas Well

In high sour gas reservoir drilling process, it happens occasionally that high-strength drill pipe suffers brittle fracture failure due to stress corrosion cracking, and poses serious hazard to drilling safety. To solve this problem, this paper studied the stress corrosion cracking mechanism and inf...

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Bibliographic Details
Published in:Journal of Wuhan University of Technology. Materials science edition 2014-08, Vol.29 (4), p.813-816
Main Authors: Zhang, Zhi, Li, Jing, Zeng, Dezhi, Hu, Junying, Hou, Duo, Zhang, Liehui, Shi, Taihe
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Drill pipe
Drilling
Hydrogen permeation
Materials Science
Metallic Materials
Reservoirs
Simulation
Sour gas
Stress corrosion cracking
Tensile tests
含硫气井
应力腐蚀开裂
应力腐蚀裂纹
拉伸试验
钻井过程
钻杆
高含硫气藏
高强度
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Summary:In high sour gas reservoir drilling process, it happens occasionally that high-strength drill pipe suffers brittle fracture failure due to stress corrosion cracking, and poses serious hazard to drilling safety. To solve this problem, this paper studied the stress corrosion cracking mechanism and infl uencing factors of highstrength drill pipe in sour environment with hydrogen permeation experiments and tensile tests. We simulated practical conditions in laboratory and evaluated the stress corrosion cracking performance of the high-strength drill pipe under conditions of high stress level. For the problems occurring in use of high-strength drill pipe on site, the paper proposed a technical measure for slower stress corrosion cracking.
ISSN:1000-2413
1993-0437
DOI:10.1007/s11595-014-1002-8