A comprehensive analysis on the longitudinal fracture in the tool joints of drill pipes

Xin-hu, Wang; Li, Fangpo; Liu, Yonggang; Feng, Yaorong; Zhu, Lijuan

doi:10.1016/j.engfailanal.2017.03.019

Cited by 15 publications

(3 citation statements)

References 4 publications

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“…1 The loads, including tensile load, bending load, torsional load, and impact load, borne by the drill pipe, increase the risk of fatigue failure of the drilling pipes. [2][3][4] The drilling pipe is…”

Section: Introductionmentioning

confidence: 99%

“…Drill string, up to several kilometers long, is a tubular structure consisting of hundreds of drilling pipes that can drive a drilling bit for oil and gas extraction 1 . The loads, including tensile load, bending load, torsional load, and impact load, borne by the drill pipe, increase the risk of fatigue failure of the drilling pipes 2–4 . The drilling pipe is prone to micro‐cracks caused by impact load during operation, and the cracks propagate rapidly under the action of cyclic load, resulting in the fracture failure of the drilling pipe.…”

Section: Introductionmentioning

confidence: 99%

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Resistance of fatigue crack propagation induced by large α colony in a Ti‐Al‐V‐Mo‐Zr alloy

Liu,

Peng,

Wang

et al. 2024

Fatigue Fract Eng Mat Struct

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For Ti alloys used in oil drilling pipe, the fatigue crack propagation (FCP) resistance is one of the key properties for petroleum industrial applications. In this work, the fatigue crack propagation behaviors of bimodal, equiaxed, lamellar, and Widmanstatten microstructures have been systematically investigated and characterized by SEM and EBSD. The results show that the Widmanstatten microstructure containing α colonies has higher yield strength (877 MPa), moderate elongation (9.3%), and better FCP resistance compared to other specimens. During the process of crack propagation, the large α colonies can effectively deflect the cracks and induce secondary cracks, which significantly impedes the main crack propagation. Additionally, tensile twinning can occasionally occur within the large α colony along the crack, improving the plasticity of the crack tip and resulting in a decrease in fatigue crack propagation rate (FCPR).

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Resistance of fatigue crack propagation induced by large α colony in a Ti‐Al‐V‐Mo‐Zr alloy

Liu,

Peng,

Wang

et al. 2024

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…Moreover, the diameter of the pipe joint is usually larger than that of the drill pipe, resulting in significant wear. Hence, it is very urgent to enhance the erosion, corrosion, and wear resistance of the drill pipe [ 12 ].…”

Section: Introductionmentioning

confidence: 99%

Corrosion and Wear Behavior of WC–10Co4Cr Coating under Saturated Salt Drilling Fluid

et al. 2021

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Coating on the surface is one of the main ways to improve the corrosion resistance and wear resistance of materials. In this work, the corrosion, erosion, and wear resistance of WC–10Co4Cr coating and 27CrMoV substrate were compared by simulating the actual working conditions of the drill pipe. The simulation results show that the most serious corrosion occurred at the pipe body and the dominating erosion arose at the pipe joint closing to the inlet of the flow field. WC–10Co4Cr coating has excellent protection to 27CrMoV substrate, resulting in a 400 mV increase in corrosion potential, a two-orders-of-magnitude decrease in the corrosion current, and four times the improvement of the impedance value. The erosion resistance of the WC–10Co4Cr coating increased to more than 30% higher than that of the 27CrMoV substrate. The friction coefficient of the WC–10Co4Cr coating was much lower than that of the 27CrMoV substrate, and the wear resistance of the coating was higher than that of the substrate.

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

Luo

Liu

Shen

et al. 2019

J. of Materi Eng and Perform

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A comprehensive analysis on the longitudinal fracture in the tool joints of drill pipes

Cited by 15 publications

References 4 publications

Resistance of fatigue crack propagation induced by large α colony in a Ti‐Al‐V‐Mo‐Zr alloy

Resistance of fatigue crack propagation induced by large α colony in a Ti‐Al‐V‐Mo‐Zr alloy

Corrosion and Wear Behavior of WC–10Co4Cr Coating under Saturated Salt Drilling Fluid

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

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