Isikhathi esidlule nesamanje se-Cone bit

Kusukela kwaqala i-cone bit yokuqala ngo-1909, i-cone bit ibilokhu isetshenziswa kakhulu emhlabeni. I-Tricone bit iyi-drill bit evame kakhulu esetshenziswa emisebenzini yokubhoboza ejikelezayo. Lolu hlobo lwe-drill lunezinhlobo ezahlukene zamazinyo kanye nezinhlobo ze-bearing junction, ngakho-ke lungashintshwa ukuze luhambisane nezinhlobo ezahlukene zokwakheka. Ekubhobozeni, isakhiwo esifanele se-cone bit singakhethwa ngokufanele ngokuya ngezakhiwo zokwakheka okubhoboziwe, futhi isivinini sokubhoboza esanelisayo kanye ne-bit footage kungatholakala.

Umgomo wokusebenza we-cone bit

Uma i-cone bit isebenza phansi komgodi, yonke i-bit ijikeleza i-bit axis, ebizwa ngokuthi i-revolution, bese ama-cone amathathu egoqa phansi komgodi ngokwe-axis yawo, ebizwa ngokuthi i-rotation. Isisindo se-bit esisetshenziswa edwaleni ngamazinyo senza idwala liphuke (lichoboze). Enqubweni yokugoqa, i-cone ixhumana ngokushintshana phansi komgodi ngamazinyo angawodwa namazinyo aphindwe kabili, futhi indawo ephakathi kwe-cone iphakeme futhi iphansi, okubangela ukuthi i-bit ikhiqize ukudlidliza okude. Lokhu kudlidliza okude kubangela ukuthi intambo yokubhoboza icindezele futhi yelule njalo, kanti intambo yokubhoboza engezansi iguqula lokhu kuguquguquka kwe-cyclic elastic kube amandla okushaya ekwakhekeni ngamazinyo ukuze kuphulwe idwala. Lokhu kuhlasela kanye nesenzo sokuchoboza kuyindlela eyinhloko yokuchoboza idwala nge-cone bit.

Ngaphandle kokuthinta nokuchoboza idwala phansi komgodi, i-cone bit ikhiqiza nomphumela wokucheba edwaleni phansi komgodi.

Ukuhlukaniswa kanye nokukhethwa kwe-cone bit

Kunabakhiqizi abaningi bama-cone bits, abanikeza izinhlobo ezahlukene nezakhiwo zama-bits. Ukuze kube lula ukukhethwa nokusetshenziswa kwama-cone bits, i-International Institute of Drilling Contractors (IADC) ithuthukise indinganiso ehlanganisiwe yokuhlela kanye nendlela yokubala ama-cone bits emhlabeni jikelele.