A double load spectrum extrapolation for drill pipe of rotary drilling rig considering load sequence
Yuying Shen,
Yi Li,
Jixin Wang
et al.
Abstract:The load spectrum of rotary drilling rig’s drill pipe is used for drill pipe design, simulated fatigue testing, and reliability assessment. However, the proper extrapolation of the drill pipe double load is challenging, especially to meet the requirements of both load sequence and load strengthening. In this paper, an extrapolation technique for a double load of drill pipe is proposed. The time sequence rainflow counting technique is proposed to keep the torque and pressure sequence. Meanwhile, the individual … Show more
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