Min Luo1, Tingting Xu1, *, Jiajun Jiang2, Xu Chi3, Jing Wang4, Shihua Xue1
CMES-Computer Modeling in Engineering & Sciences, Vol.123, No.1, pp. 75-100, 2020, DOI:10.32604/cmes.2020.09236
Abstract The lack of research on flexible drilling tool leads to limited application of
ultra-short radius horizontal wells. The flexible drilling tool is different from the
conventional drilling tool. The flexible drilling pipe involves a mutual transition between
the structure and the mechanism during the deformation process. At the same time, the
flexible drilling pipe and the eccentric guide tube, the guide tube and the wellbore
generate random contact. In this paper, 3-D beam elements, universal joint elements,
rigid beam elements and the beam-beam contact elements are combined to establish a
two-layer contact nonlinear finite element model of the flexible drilling… More >
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