3Newman K R. Vibration and rotation considerations in extending coiled,tubing reach [ R ] . SPE 106979, 2007.
4Sola K I, Lund B. New downhole tool for coiled tubing extended reach [R] . SPE 60701, 2000.
5Zheng Shunfeng, Jeffryes B P, Tthomeer H V, et al. Method and apparatus to vibrate a downhole component: US, 6907927 [P] . 2005 -06 -21.
6Waiter B. Acuoustic flow pulsing apparatus and Method for Drill String: US, 7059426 [P] . 2006 -06 - 13.
7Eddison A M, Haredie R. Downhole Flow Pulsing Ap- paratus: US, 6279670 [P] . 2001 -08 -28.
8Eddison A M, Haredie R. Downhole apparatus and met hodofuse: US, 6508317 [P] .2003-01-21.
9McCarthy J P, Stanes B H, Clark K W, et al. A step change in drilhng efficiency: quantifying the effects of adding an axial oscillation tool within challenging well- bore environments [ R] . SPE/IADC 119958, 2009.