Koni bit chishandiso chakagadzirwa netungsten kana simbi yakaoma iyo inopwanya matombo panguva yekuboorwa. Kazhinji chinogadzirwa nezvidimbu zvitatu zvekoni zvinotenderera zvine mazino akaomarara anopwanya matombo kuita zvidimbu zvidiki. Ichi chishandiso chinowanzoshandiswa mumabasa ekuboorwa asina mugero.
Rimwe zita rekoni bit i roller cone bit.
Trenchlesspedia Inotsanangura Cone Bit
Howard Hughes, Sr. anonzi ndiye akatanga kugadzira chibhora che "Sharp–Hughes". Akapihwa mvumo yekuzvishandisa muna 1909. Mwanakomana wake, Howard Hughes, Jr., akava mumwe wevanhu vakapfuma pasi rose nekushandisa chigadzirwa ichi panguva yekukura kwemafuta muTexas.
Kugona kupwanya dombo panguva yekuboora kwakaita kuti koni ive chishandiso chakanaka kwazvo. Shanduro yemazuva ano yekoni, tri-cone rotary drill bit, inoshandisa musanganiswa wekutenderera nekutenderera kwezvinhu zvakaoma kuti iparadze dombo sezvarinopinzwa mukati mevhu. Mvura inomhanyisa inomanikidzwa kuburikidza ne annulus yetambo yekuboora, iyo inobvisa zvidimbu zvedombo zvakaputsika yozvidzosera pamusoro.
Nguva yekutumira: Gunyana-01-2022