I-step drag bit iwumshini wokubhoboza ovamise ukwakhiwa ukuze usetshenziswe ngendlela ethambile njengesihlabathi, ubumba, noma idwala elithile elithambile.Kodwa-ke, ngeke zisebenze kahle kumatshe amatshe noma amatshe aqinile.Ukusetshenziswa kuhlanganisa ukumba imithombo yamanzi, izimayini, i-geothermal.imvelo kanye nokumba ukuhlola.Uma kungenzeka, kufanele zisetshenziselwe ukubhoboza izimbobo zokushayela ngoba zikhiqiza ama-cuttings okulula ukuwasika.
Izinyathelo ezi-3 zokudonsa izingcezu ziyisiqephu esisodwa sokwakhiwa kwensimbi ye-alloy enamathiphu okusika i-tungsten carbide kanye nezinhlangothi zegeji ukuze kuqinisekiswe impilo ende.Inamaphiko ama-3 nezimbobo ezi-3 ezishaywayo.Uma kuqhathaniswa namaphiko angu-4, amabhithi okudonsa amaphiko angu-3 avame ukubhoboza ngokushesha futhi anolaka, kanti, ahlala emifushane futhi awahlali isikhathi eside.3 amaphiko esinyathelo sokudonsa amabhithi azokhiqiza amandla amakhulu okusika kune-chevron style drag bit.Ijubane lethebula elijikelezayo lezinyathelo zokudonsa amabhithi kufanele libe phakathi kuka-60 no-80 rpm ngesisindo esincane kubhithi (WOB).
Izingcezu ezi-3 zamaphiko zokudonsa zingamathuluzi okongayo lapho umba ukwakheka kwejiyoloji okuthambile kanye nokushona okungashoni, zenzelwe ukwakheka okuthambile okuphakathi nendawo, okufana Nobumba, I-Loam, Silt, inhlabathi e-Mostsoft-to-medium enomswakama, njll. Futhi nezinyathelo zokudonsa izingcezu kunconyelwa ukumba eMining, Exploration, Environmental, Water Well, Geo Exchange, njll.
Qaphela: I-diameter nentambo ekhonjiswe ngenhla ingusayizi ojwayelekile, abanye osayizi bayatholakala uma becelwa.
Usayizi wochungechunge: 2 3/8'' API Reg, 2 7/8'' API Reg, 3 1/2'' API Reg, 4 1/2'' API Reg, 6 5/8'' API Reg, 2' ' API IF, 2 3/8'' API IF, 2 7/8'' API IF, A Rod, N Rod, AW, BW, NW, AWJ, BWJ, NWJ.
| I-Bit Diameter | |||||
| (Amayintshi) | (mm) | (Amayintshi) | (mm) | (Amayintshi) | (mm) |
| 3 1/2" | 88.9 mm | 6 1/8" | 155.6mm | 8 7/8" | 225.4mm |
| 3 5/8" | 92.1 mm | 6 1/4" | 158.8mm | 9" | 228.6mm |
| 3 3/4" | 95.3 mm | 6 1/2" | 165.1mm | 9 1/8" | 231.8mm |
| 3 7/8" | 98.4 mm | 6 5/8" | 168.3mm | 9 1/4" | 235.0mm |
| 4" | 101.6 mm | 6 3/4" | 171.5mm | 9 1/2" | 241.3mm |
| 4 1/8" | 104.8 mm | 6 7/8" | 174.6mm | 9 5/8" | 244.5mm |
| 4 1/4" | 108.0 mm | 7" | 177.8mm | 9 3/4" | 247.7mm |
| 4 1/2" | 114.3 mm | 7 1/8" | 181.0mm | 9 7/8" | 250.8mm |
| 4 5/8" | 117.5 mm | 7 1/4" | 184.2mm | 10" | 254.0mm |
| 4 3/4" | 120.7mm | 7 3/8" | 187.3mm | 10 5/8" | 269.9mm |
| 4 7/8" | 123.8mm | 7 1/2" | 190.5mm | 11 1/2" | 292.1mm |
| 5" | 127.0mm | 7 5/8" | 193.7mm | 12" | 304.8mm |
| 5 1/8" | 130.2mm | 7 3/4" | 196.9 mm | 12 1/4" | 311.2mm |
| 5 1/4" | 133.4mm | 7 7/8" | 200.0mm | 12 1/2" | 317.5mm |
| 5 3/8" | 136.5mm | 8" | 203.2mm | 13 3/4" | 349.3 mm |
| 5 1/2" | 139.7mm | 8 1/8" | 206.4mm | 14" | 355.6mm |
| 5 5/8" | 142.9mm | 8 1/4" | 209.6mm | 14 3/4" | 374.7mm |
| 5 3/4" | 146.1mm | 8 1/2" | 215.9mm | 15" | 381.0mm |
| 5 7/8" | 149.2 mm | 8 5/8" | 219.1mm | 15 3/4" | 400.1mm |
| 6" | 152.4mm | 8 3/4" | 222.3mm | 17 1/2" | 444.5mm |
Hudula amaphakheji we-Bits
| Inani elincane le-oda | N/A |
| Inani | |
| Imininingwane yokupakisha | Iphakheji Elijwayelekile Lokulethwa Kokuthunyelwa kwamanye amazwe |
| Isikhathi sokuthumela | 7 izinsuku |
| Imigomo Yokukhokha | T/T |
| Supply Amandla | Ngokusekelwe ku-oda elinemininingwane |
