Sulfide Stress Corrosion Cracking Behavior of G105 and S135 High-Strength Drill Pipe Steels in H2S Environment

Luo, Sheji; Liu, Ming; Shen, Yi; Lin, Xiuzhou

doi:10.1007/s11665-019-03913-7

Cited by 13 publications

(6 citation statements)

References 24 publications

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“…Furthermore, the bonding force between metal atoms weakens, reducing external stress required for crack propagation and increasing material cracking sensitivity. Therefore, under the action of external stress or residual stress of the weld at both ends of the pipeline, the pipeline was most prone to cracking and damage at weak points [23][24][25]. Based on the above analysis, it was concluded that the pipeline fracture was caused by sulfide stress corrosion cracking.…”

Section: Comprehensive Analysismentioning

confidence: 99%

Failure Causes Analysis of Circumferential Cracking on Gathering Pipeline in M Oil and Gas Field

Zhao,

Zhang,

et al. 2024

Coatings

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The gathering and transportation pipeline experienced corrosion cracking failure after 2 years of operation. This paper conducted an analysis on the reasons for the pipeline failure by integrating background information on its usage, as well as observations, analyses, and detection of the morphology of failure samples. The results indicated that the fracture originated from the inner wall of the pipeline and extended to the outer wall along the wall thickness until complete fracture occurred. Based on microstructure analysis of the fracture and original microcracks at the top of the pipeline, it was determined that the fracture was a multi-source brittle fracture, spreading in both inter-granular and trans-granular forms with obvious radial quasi-cleavage fractures accompanied by secondary cracks. EDS analysis revealed that the element S was present in all zones related to fracture initiation, spreading, and transient zones. XRD analysis showed that corrosion products on the fracture surface were mainly composed of FeS, indicating the presence of H2S in the service environment leading to sulfide stress corrosion cracking characteristics in line with pipeline failure. It is recommended to confirm the source of H2S in the service medium and test residual stress within the same pipeline for potential risk assessment regarding cracking in other areas.

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Section: Comprehensive Analysismentioning

confidence: 99%

Failure Causes Analysis of Circumferential Cracking on Gathering Pipeline in M Oil and Gas Field

Zhao,

Zhang,

et al. 2024

Coatings

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“…Ref. [14] investigated the SSCC behavior of G105 and S135 drill pipes in simulated drilling environments containing H 2 S based on using slow-strain-rate tensile tests. Ref.…”

Section: Introductionmentioning

confidence: 99%

Corrosion Behavior and Mechanical Performance of Drill Pipe Steel in a CO2/H2S-Drilling-Fluid Environment

Zheng,

Zhang,

Sun

et al. 2024

Processes

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Objectives: This article investigates the corrosion behavior and mechanical-property changes of S135, G105, and V150 drill pipe materials in a high-temperature-resistant, potassium amino poly-sulfonate drilling fluid, which has good lubrication performance and contains CO2/H2S, by applying an 80% yield-limit-load simulation. The results show that the CO2-corrosion behavior of G105, S135, and V150 drill pipes are obvious under the simulated constant-load-stress-corrosion environments at the wellhead, well-middle, and bottomhole positions. Compared to uncorroded drill pipes, S135 and V150 drill pipes have increased strength and yield ratios, decreased fracture elongation, and increased sensitivity to hydrogen embrittlement under H2S action, and V150 has a greater risk of stress-hydrogen embrittlement. The strength and yield ratios of G105-material drill pipes decrease, while the fracture elongation increases; the intensity-change amplitude levels are ranked V150 > G105 > S135, and the fracture-elongation-change amplitude is ranked G105 > S135 > V150. The tensile-performance-change amplitude and the SSCC (Sulfide-Stress-Corrosion Cracking) sensitivity of G105 and V150 drill pipes were the highest at the bottomhole. S135 drill pipe materials were most affected by pitting and tensile action at the wellhead, and they had the with the largest SSCC sensitivity.

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“…The quantitative effects of these latter chemical reactions were analyzed by the authors with a 3D FE model, where the stress concentration of the corrosion pits was estimated. In addition to the oxygen, even the H 2 S, which typically comes from the decomposition of sulfonated drilling fluid or from the environment where the drill pipe is used [27], can have a detrimental effect on the fatigue strength of drill pipe steel, as shown in Ref. [28].…”

Section: Introductionmentioning

confidence: 99%

Resonant Fatigue Tests on Polished Drill Pipe Specimens

Santus,

Romanelli,

Bertini

et al. 2024

Machines

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In this study, the fatigue strength of polished drill pipe specimens was investigated and compared with previous test results of corroded and not-corroded pipes. The resonant fatigue test rig, which was designed and implemented by the University of Pisa, is initially presented by providing a detailed description of the set-up of the machine, the calibration of the strain gauges, the control system, and the correct identification of the vibrational node locations. A polishing rig was also designed and put into operation to remove the corrosion pits from the outer surface of almost the entire length of the drill pipe specimens. After the fatigue tests with the resonant rig, and the observation of the fatigue fracture of the specimens, a few samples were extracted from different zones (corroded and not corroded) of the failed drill pipe specimens. This allowed for investigations to be carried out using a scanning electronic microscope. The obtained results were analyzed using the Murakami model, and a discussion is presented about the effect of the corrosion pits on the fatigue strength.

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Sulfide Stress Corrosion Cracking Behavior of G105 and S135 High-Strength Drill Pipe Steels in H2S Environment

Cited by 13 publications

References 24 publications

Failure Causes Analysis of Circumferential Cracking on Gathering Pipeline in M Oil and Gas Field

Failure Causes Analysis of Circumferential Cracking on Gathering Pipeline in M Oil and Gas Field

Corrosion Behavior and Mechanical Performance of Drill Pipe Steel in a CO2/H2S-Drilling-Fluid Environment

Resonant Fatigue Tests on Polished Drill Pipe Specimens

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