Kare neazvino zveCone bit

Kubva pakatanga kushandiswa koni yekutanga muna 1909, koni yacho ndiyo inonyanya kushandiswa pasi rose. Tricone bit ndiyo inonyanya kushandiswa pakuboorera. Rudzi urwu rweboorera rune magadzirirwo akasiyana emazino uye mhando dzemabheari, saka runogona kugadziriswa kuti ruenderane nemhando dzakasiyana dzekugadzira. Mukushanda kwekuboorera, chimiro chakakodzera chekoni chinogona kusarudzwa nemazvo zvichienderana nehunhu hwekugadzira kwakaboorerwa, uye kumhanya kunogutsa kwekuboorera uye bit footage zvinogona kuwanikwa.

Nheyo yekushanda kwekoni bit

Kana koni bit ichishanda pasi pegomba, koni yese inotenderera pa bit axis, iyo inonzi revolution, uye makoni matatu anotenderera pasi pegomba zvichienderana ne axis yawo, iyo inonzi kutenderera. Kurema kwe bit inoshandiswa padombo kuburikidza nemazino kunoita kuti dombo riputsike (kupwanya). Mukuita kwekumonera, koni inosangana pasi pegomba nemazino maviri uye nemazino maviri, uye nzvimbo yepakati pekoni yakakwira uye yakaderera, izvo zvinoita kuti koni ibudise kumonera kwenguva refu. Kumonera uku kwenguva refu kunoita kuti tambo yekumonera idzvanyirire uye itambanuke nguva dzose, uye koni yekumonera yakaderera inoshandura iyi cyclic elastic deformation kuita simba rekukanganisa pakuumbwa kuburikidza nemazino kuti iputse dombo. Kumonera uku uye chiito chekupwanya ndiyo nzira huru yekupwanya dombo nekoni bit.

Kunze kwekurovera nekupwanya dombo riri pasi pegomba, koni yacho inoitawo kuti dombo riri pasi pegomba rive rakachekwa.

Kupatsanura uye kusarudzwa kwekoni bit

Kune vagadziri vakawanda vemakone bits, ayo anopa mhando dzakasiyana-siyana uye maumbirwo emakone bits. Kuti zvive nyore kusarudza nekushandisa makone bits, International Institute of Drilling Contractors (IADC) yakagadzira chiyero chakabatana chekupatsanura uye nzira yekuverenga makone bits pasi rese.