斷銑工具是用來(lái)割斷并磨銑井內(nèi)一段套管以能夠進(jìn)行側(cè)鉆作業(yè)的專用工具。
The breaking and milling tool is a special tool used which is used to cut and mill a section of casing in hole so that sidetrack drilling operation can be done  smoothly.

技術(shù)規(guī)格及參數(shù)

型號(hào)	外形尺寸(mm)	接頭螺紋	下入套管
DXG140	118	NC31	5 1/2"
DXG178	152	NC38	7"
DXG245	220	NC50	9 5/8"