Cov Cuab Yeej Milling Seem

Cov ntaub ntawv khoom Seem zeb yog ib hom cuab yeej qhib qhov rai casing uas koom ua ke txiav casing thiab milling functions. Lub tshuab seem zeb khiav mus rau hauv lub casing nrog rau BHA, thiab txiav lub casing ntawm qhov chaw teem tseg ua ntej. Tom qab lub casing raug txiav tag, nws yuav raug milled ncaj qha los ntawm qhov chaw no. Tom qab mus txog qhov tob, lub qhov rai casing ua tiav. seem zeb muaj qhov zoo ntawm cov qauv yooj yim, kev ua haujlwm yooj yim ua rau nws yog ib qho zoo heev ca...