梨形磨鞋可用來磨削套管較小的局部變形，修理在下鉆過程中各種工具將接箍處套管造成的卷邊及射孔時(shí)引起的毛刺、飛邊，清整滯留在井壁上的礦物及其它堅(jiān)硬的雜物，以恢復(fù)通徑尺寸。
The pear type mill shoe can be used to mill small local deformation of casing and finish all flanged edges, burrs of casing at coupling caused by all kinds of tools during running in hole and by perforation as well as remove all minerals and other hard settings around well wall so as to restore casing drift diameter.

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
LMX114	90～96	2 3/8"REG	4 1/2"
LMX114	96～102	NC26(2A10)	4 1/2"
LMX127	104～112	NC26(2A10)	5"
LMX140	112～124	NC31(310)	5 1/2"
LMX168	142～152	NC38(310)	6 5/8"
LMX178	152～164	NC38(310)	7"