6 IJAERS JAN 2016 8 Study On Vibration Characteristics Of Drill Pipe Drilling Mining Seam For Gas Drainage

Topics: Soft coal seam, drilling tool, vibration characteristics, drilling depth

Collection: ijaers; folkscanomy_academic; folkscanomy; additional_collections

Language: English

In the process of coal seam gas drainage
drilling, under the pressure of the drilling machine,any position of the drill
pipe will be have the possibility of transverse vibration, then made the
phenomenon of contact and collision between drill pipe and hole wall. Through
the analysis of the transverse vibration, axial vibration and torsional
vibration of drill pipe, reveals the changes of drill pipe diameter, drilling
depth and other factors on lateral vibration, axial vibration, torsional
vibration and natural frequency of the drill pipe, found that the transverse
vibration of drill pipe is the root cause of drill pipe fatigue fracture, at
the same time, it is also an important reason for the phenomenon of coal seam
hole wall collapse, plugging hole and stuck drilling.