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Oct 12, 2018
Definition of yield strength
The yield strength of drill pipe refers to the maximum strength of plastic deformation when the drill pipe is subjected to tensile and compressive forces and can no longer withstand the continued increase in load. Yield strength is one of the important reference indicators for drilling construction and equipment selection.
Calculation method of yield strength
The yield strength of drill pipe is mainly related to factors such as steel type, steel pipe process quality, outer diameter, wall thickness, length and drill pipe thread. Generally speaking, the yield strength of drill pipe can be calculated according to the following formula:
Fy = 0.6 × Sut
Wherein, Fy is the yield strength of drill pipe, in MPa; Sut is the tensile strength of steel, in MPa.
Yield strength parameter table of different types of drill pipes
The yield strength parameter of drill pipe depends on its model and material. The following is a table of yield strength parameters for some commonly used drill pipe models:
| Drill pipe model | Yield strength |
| G105 | 724 MPa |
| S135 | 931 MPa |
| E75 | 586 MPa |
| X95 | 655 MPa |
Conclusion
Through the introduction of this article, we have learned the definition and calculation method of drill pipe yield strength and the yield strength parameter table of different types of drill pipes. In actual drilling construction and equipment selection, the yield strength of the drill pipe must meet the design requirements, which is a crucial task.
Article source: https://article-realm.com/article/Business/66145-Detailed-explanation-of-drill-pipe-yield-strength-table.html
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