This　paper　conducts　a　dynamical　analysis　of　drill-string-like　pipes　based　on　the　ground-breaking　contribution　of　Paidoussis　et　al.　(2008),　in　which　the　stability　of　a　tubular　cantilever　conveying　internal　and　external　annular　flows　without　spin　is　investigated.　The　innovations　of　this　paper　are　generalized　as　follows:　i)　A　spinning　three-dimensional　(3D)　model　is　developed　to　simulate　working　drill　strings;　ii)　Supported　pipes　instead　of　cantilevers　are　considered　due　to　the　stabilizers　and　heavy　loads　encountered　at　the　free　end　(the　drill　bit);　iii)　Hamiltonian,　instead　of　Newtonian,　derivation　is　performed　to　achieve　the　governing　equations　of　such　system　with　gyroscopic　effects　induced　by　spinning　motion　and　fluid-structure　interaction　(FSI),　namely　a　doubly　gyroscopic　system;　iv)　3D　motions,　involving　in-plane　and　out-of-plane　transverse　motions,　are　studied;　v)　The　frequencies,　energy,　mode　shapes　and　time-domain　responses　to　the　initial　conditions　are　comprehensively　investigated　to　display　the　dynamical　characteristics　of　the　system.　The　results　obtained　reveal　that　the　viscous　external　fluid,　flow　velocity,　spinning　speed　as　well　as　the　gravity　and　axial　pretension　all　have　significant　effects　on　the　dynamical　behaviors　of　the　pipe.　The　dynamics　of　the　present　system　has　been　demonstrated　rather　different　from　that　of　cantilevered　structures　without　spin.　(C)　2019　Elsevier　Ltd.　All　rights　reserved.