Matakin ja bit shine ɗan rawar soja wanda aka saba ƙera don amfani da shi a cikin sassauƙa mai laushi kamar yashi, yumbu, ko wani dutse mai laushi.Duk da haka, ba za su yi aiki da kyau a cikin tsakuwa ko tsakuwa mai ƙarfi ba.Abubuwan da ake amfani da su sun haɗa da hako rijiyoyin ruwa, hako ma'adinai, geothermal.muhalli da hakowa.A duk lokacin da zai yiwu, ya kamata a yi amfani da su don tono ramukan matukin jirgi saboda suna samar da yankan da ke da sauƙin shiga.
3 fuka-fuki mataki ja bits yanki ne guda na ginin ƙarfe na simintin ƙarfe tare da tungsten carbide yankan tukwici da bangarorin ma'auni don tabbatar da tsawon rayuwa.Yana da fukafukai 3 da ramukan ruwa 3.Idan aka kwatanta da fuka-fuki 4, 3 fuka-fuki mataki ja ragowa suna da saurin rawar jiki da tashin hankali, yayin da, sun fi guntu ɗorewa kuma ba su dawwama.Gudun tebur na jujjuyawar mataki na ja ya kamata ya kasance tsakanin 60 zuwa 80 rpm tare da nauyi mai nauyi akan bit (WOB).
3 fuka-fuki mataki ja ragowa kayan aiki ne na tattalin arziki lokacin hakowa softer geological formations da shallower zurfin, da farko an tsara su don taushi tomedium formations, irin su Clay, Loam, Silt, Mostsoft-to-matsakaicin kasashat da danshi, da dai sauransu Kuma ma mataki ja bits. ana ba da shawarar hakowa a cikin Ma'adinai, Bincike, Muhalli, Rijiyar Ruwa, Musanya Geo, da sauransu.
Lura: Diamita da zaren da aka nuna kamar yadda aka nuna a sama girmansu ne na yau da kullun, ana samun wasu masu girma dabam akan buƙata.
Girman zaren: 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 IDAN, 2 3/8 '' API IDAN, 2 7/8 '' API IDAN, A Rod, N Rod, AW, BW, NW, AWJ, BWJ, NWJ.
| Diamita Bit | |||||
| (Inci) | (mm) | (Inci) | (mm) | (Inci) | (mm) |
| 3 1/2" | 88.9 mm | 6 1/8" | 155.6 mm | 8 7/8" | 225.4 mm |
| 3 5/8" | 92.1 mm | 6 1/4" | 158.8 mm | 9" | 228.6 mm |
| 3 3/4" | 95.3 mm | 6 1/2" | 165.1 mm | 9 1/8" | 231.8 mm |
| 3 7/8" | 98.4 mm | 6 5/8" | 168.3 mm | 9 1/4" | 235.0mm |
| 4" | 101.6 mm | 6 3/4" | 171.5 mm | 9 1/2" | 241.3 mm |
| 4 1/8" | 104.8 mm | 6 7/8" | 174.6 mm | 9 5/8" | 244.5 mm |
| 4 1/4" | 108.0 mm | 7" | 177.8 mm | 9 3/4" | 247.7 mm |
| 4 1/2" | 114.3 mm | 7 1/8" | 181.0mm | 9 7/8" | 250.8 mm |
| 4 5/8" | 117.5 mm | 7 1/4" | 184.2 mm | 10" | 254.0 mm |
| 4 3/4" | 120.7 mm | 7 3/8" | 187.3 mm | 10 5/8" | 269.9 mm |
| 4 7/8" | 123.8 mm | 7 1/2" | 190.5mm | 11 1/2" | 292.1 mm |
| 5" | 127.0mm | 7 5/8" | 193.7 mm | 12" | 304.8 mm |
| 5 1/8" | 130.2 mm | 7 3/4" | 196.9 mm | 12 1/4" | 311.2 mm |
| 5 1/4" | 133.4 mm | 7 7/8" | 200.0mm | 12 1/2" | 317.5 mm |
| 5 3/8" | 136.5 mm | 8" | 203.2 mm | 13 3/4" | 349.3 mm |
| 5 1/2" | 139.7 mm | 8 1/8" | 206.4 mm | 14" | 355.6 mm |
| 5 5/8" | 142.9 mm | 8 1/4" | 209.6 mm | 14 3/4" | 374.7 mm |
| 5 3/4" | 146.1 mm | 8 1/2" | 215.9 mm | 15" | 381.0 mm |
| 5 7/8" | 149.2 mm | 8 5/8" | 219.1 mm | 15 3/4" | 400.1 mm |
| 6" | 152.4 mm | 8 3/4" | 222.3 mm | 17 1/2" | 444.5 mm |
Jawo fakitin Bits
| Mafi ƙarancin oda | N/A |
| Farashin | |
| Cikakkun bayanai | Daidaitaccen Kunshin Isar da Fitarwa |
| Lokacin Bayarwa | kwanaki 7 |
| Sharuɗɗan Biyan kuɗi | T/T |
| Ƙarfin Ƙarfafawa | Dangane da Cikakken oda |
