Investigation of the Influence of tapered Thread Pitch Deviation on the Drill-String Tool-Joint Fatigue Life

Kopei, Volodymyr; Onysko, Oleh; Kusyi, Yaroslav; Vriukalo, Victor; Lukan, Tetiana

doi:10.1007/978-3-031-05230-9_17

Cited by 5 publications

(3 citation statements)

References 28 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A key advantage of threaded connections compared to other methods of connecting pipes and tools in the drill string is that they can be disassembled and reused many times. At the same time, this advantage can become a source of problems for the entire structure due to unintentional self-unscrewing of the threaded connection [13][14][15][16].…”

Section: Values Of Mechanical Properties Due To Strength Groups Ofmentioning

confidence: 99%

See 1 more Smart Citation

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

Onysko,

Kopei,

Barz

et al. 2024

Machines

View full text Add to dashboard Cite

High-precision tapered threads are widely used in hard-loaded mechanical joints, especially in the aggressive environment of the drilling of oil and gas wells. Therefore, they must be made of workable materials often difficult to machine. This requires the use of high-performance cutting tools, which means the application of non-zero geometric parameters: rake and edge inclination angles. This study is based on analytical geometry methodology and describes the theoretical function of the thread profile as convoluted surfaces dependent on the tool’s geometric angles. The experiments were conducted using a visual algorithm grounded on the obtained function and prove the practical use of the scientific result. They predict the required accuracy of thread made using a lathe tool with a rake angle of up to 12°.

show abstract

Section: Values Of Mechanical Properties Due To Strength Groups Ofmentioning

confidence: 99%

“…Figure13. Scheme of obtaining the profile of a drill-string thread, which is made using the fullprofile lathe thread cutting tool (yellow).…”

mentioning

confidence: 99%

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

Onysko,

Kopei,

Barz

et al. 2024

Machines

View full text Add to dashboard Cite

show abstract

“…Fan Yuan Hao discussed the causes of thread milling errors of drill pipe joints [14], and established a machining error model for the whole machining process of thread milling. Volodymyr Kopei studied the effect of pitch deviation on the fatigue life of drill tool joints [15]. Jinhua Cheng analyzed the effect of interference on the ultimate strength and failure mode of the drill pipe body and tool joint assembly [16].…”

Section: Introductionmentioning

confidence: 99%

Analysis of the Influence of Thread Parameter Deviation on The Sealing Performance of Drill Pipe Joint Under Axial Load

Cheng,

Hou

2024

AJST

View full text Add to dashboard Cite

To explore the influence of the limit deviation of the thread parameters of the drill pipe joint on its sealing performance, based on the API NC38 drill pipe joint, the existence of the limit deviations of the three thread parameters of taper, side angle, and pitch is analyzed. Based on this, a total of 12 finite element models of drill pipe joints including various limit deviations and free combinations of internal and external thread limit deviations are established, and the sealing performance of different structures under the action of make-up torque and axial load is analyzed. The results show that the pitch limit deviation has the most obvious influence on the sealing performance of the drill pipe joint, and the yield failure of the contact surface is easy to occur. The existence of taper limit deviation makes the sealing performance of the drill pipe joint significantly reduced when subjected to tensile load. When the change of the limit deviation of the side angle of the internal and external thread teeth is opposite, the plastic deformation occurs locally in the drill pipe joint, which affects the sealing effect. Therefore, it is necessary to control further the tolerance range of the thread parameters of the drill pipe joint to reduce the risk of sealing failure of the drill pipe joint.

show abstract

Modeling of Thermal Protection of Pipelines from Destruction in Technological Corridors

Mandryk

Shlapak

Tuts

et al. 2023

Lecture Notes in Networks and Systems

View full text Add to dashboard Cite

Investigation of the Influence of tapered Thread Pitch Deviation on the Drill-String Tool-Joint Fatigue Life

Cited by 5 publications

References 28 publications

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

Analytical Model of Tapered Thread Made by Turning from Different Machinability Workpieces

Analysis of the Influence of Thread Parameter Deviation on The Sealing Performance of Drill Pipe Joint Under Axial Load

Modeling of Thermal Protection of Pipelines from Destruction in Technological Corridors

Contact Info

Product

Resources

About