Si isalẹ iho dth SD ise 6 "ju ati bit price
Ninu awọn ohun elo miiran, bii liluho ipile, awọn òòlù DTH le ṣee lo pẹlu bit kan ni awọn iwọn iho to .750 mm (30″).Pẹlu ọpọ awọn sipo òòlù CD (Cluster drills) lu ihò soke si 70 ″ tabi 1778 mm.
Gẹgẹbi ofin ti atanpako, iwọn ila opin iho ti o kere ju DTH kan le lu ni iwọn ipin rẹ.òòlù 4 inch kan yoo lu iho 4 inch (102 mm).Idiwọn idiwọn jẹ iwọn ila opin ita ti òòlù, nitori, bi iwọn ila opin iho dinku, ṣiṣan afẹfẹ ti ni ihamọ.Iwọn iho ti o pọ julọ fun liluho iṣelọpọ jẹ iwọn olofo ipin pẹlu 1 inch, nitorinaa fun ikan 4 inch iwọn iho ti o pọju jẹ 5 inch (127–130 mm).
Yiyan òòlù ọtun jẹ ipinnu pupọ nipasẹ iwọn iho ati iru idasile apata.Bi o ṣe yẹ, iwọn òòlù yẹ ki o baamu iwọn iho ti a beere ni pẹkipẹki bi o ti ṣee ṣe, nlọ aaye ti o to fun awọn eso lati yọ iho naa kuro.
Awoṣe | Opo Asopọ | OD(mm) | Rec.Iho Iwon | Shank Style | Ipa Ṣiṣẹ (Pẹpẹ) |
CD35 | API 2 3/8" Reg | φ82mm | φ90-φ105 | DHD3.5 CD35 | 1.0-1.5Mpa |
CD45 | API 2 3/8" Reg | φ99mm | φ110-φ135 | Kop44 DHD340 CD45 | 1.0-2.5Mpa |
CSD4 | API 2 3/8" Reg | φ99mm | φ110-φ135 | SD4 CSD4 | 1.0-2.5Mpa |
CQL40 | API 2 3/8" Reg | φ99mm | φ110-φ135 | QL40 CQL40 | 1.0-2.5Mpa |
CD55 | API 2 3/8" Reg API 3 1/2" Reg | φ125mm | φ135-φ155 | Kop54 DHD350R CD55 | 1.0-2.5Mpa |
CSD5 | API 3 1/2" Reg | φ125mm | φ135-φ155 | SD5 CSD5 | 1.0-2.5Mpa |
CQL50 | API 3 1/2" Reg | φ125mm | φ135-φ155 | Kop54 QL50 CQL50 | 1.0-2.5Mpa |
CD65 | API 3 1/2" Reg | φ148mm | φ155-φ190 | Kop64 DHD360 CD65 | 1.0-2.5Mpa |
CSD6 | API 3 1/2" Reg | φ148mm | φ155-φ190 | SD6 CSD6 | 1.0-2.5Mpa |
CQL60 | API 3 1/2" Reg | φ148mm | φ155-φ190 | Kop64 QL60 CQL60 | 1.0-2.5Mpa |
CD85 | API 4 1/2" Reg | φ185mm | φ195-φ254 | Kop84 DHD380 CD85 | 1.0-2.5Mpa |
CSD85 | API 4 1/2" Reg | φ185mm | φ195-φ254 | SD8 CSD8 | 1.0-2.5Mpa |
CQL80 | API 4 1/2" Reg | φ185mm | φ195-φ254 | QL80 CQL80 | 1.0-2.5Mpa |
CSD10 | API 4 1/2" Reg API 5 1/2" Reg API 6 5/8" Reg | φ225mm | φ254-φ311 | SD10 CSD10 | 1.0-2.5Mpa |
CN100 | API 6 5/8" Reg | φ225mm | φ254-φ311 | NUMA100 CN100 | 1.0-2.5Mpa |
CSD12 | API 6 5/8" Reg | φ275mm | φ305-φ445 | SD12 CSD12 | 1.0-2.5Mpa |