Is e pìos drile a th’ ann am pìos tarraing ceum mar as trice air a dhealbhadh airson a chleachdadh ann an cumaidhean bog leithid gainmheach, crèadh, no creag bhog.Ach, chan obraich iad gu math ann an greabhal garbh no cumaidhean creige cruaidh.Tha cleachdadh a’ toirt a-steach drileadh tobraichean uisge, mèinneadh, drileadh geothermal.àrainneachd agus sgrùdadh.Far a bheil e comasach, bu chòir an cleachdadh airson tuill phìleat a dhrileadh oir bidh iad a 'dèanamh gearraidhean a tha nas fhasa a chlàradh.
Is e pìosan tarraing ceum 3 sgiathan aon phìos togail de stàilinn alloy le molaidhean gearraidh carbide tungsten agus taobhan tomhais gus dèanamh cinnteach à beatha nas fhaide.Tha 3 sgiathan agus 3 tuill sruthadh ann.An coimeas ri 4 sgiathan, bidh pìosan slaodadh ceum 3 sgiathan buailteach a bhith a’ drileadh nas luaithe agus nas ionnsaigheach, ach, tha iad nas giorra agus nas seasmhaiche.Bu chòir astar clàr rothlach de phìosan tarraing ceum a bhith eadar 60 agus 80 rpm le cuideam aotrom air bit (WOB).
Tha pìosan tarraing ceum 3 sgiathan nan innealan eaconamach nuair a bhios iad a’ drileadh cumaidhean geòlais nas buige agus doimhneachd nas eu-domhainn, tha iad air an dealbhadh gu sònraichte airson cumaidhean bog gu meadhanach, leithid Crèadha, Loam, Silt, ùirean as bog-gu-meadhanach aig a bheil beagan taiseachd, msaa. Agus cuideachd pìosan tarraing ceum. air am moladh airson drileadh ann am Mèinneadh, Rannsachadh, Àrainneachdail, Tobar Uisge, Geo Exchange, msaa.
Nota: Tha an trast-thomhas agus an t-snàthainn a chithear gu h-àrd nam meud àbhaisteach, tha meudan eile rim faighinn ma thèid an iarraidh.
Meud an t-snàthainn: 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.
| Trast-thomhas Bit | |||||
| (Inches) | (mm) | (Inches) | (mm) | (Inches) | (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" | 196.9mm | 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" | 349.3mm |
| 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" | 149.2mm | 8 5/8" | 219.1mm | 15 3/4" | 400.1mm |
| 6" | 152.4mm | 8 3/4" | 222.3mm | 17 1/2" | 444.5mm |
Slaod pacaidean Bits
| Meud Òrdugh as ìsle | Chan eil |
| Prìs | |
| Mion-fhiosrachadh pacaidh | Pasgan lìbhrigidh àbhaisteach às-mhalairt |
| Ùine Lìbhrigeadh | 7 làithean |
| Teirmean pàighidh | T/T |
| Comas Solarachaidh | Stèidhichte air òrdugh mionaideach |
