Kara me nga Pipe
Ko te kara Drill te nuinga e whakamahia ana mo te whakarato i nga moka keri me te pehanga keri e hiahiatia ana, me te whakarite kia tukuna te kaha kume ki te putorino wiri me te whakauru i te moka keri.E ai ki nga korero a API Spec7-1, ko te kounga o te rauemi ko te 4145H tera i muri i te maimoatanga wera, te maimoatanga whakapakeke miro me te phosphate kia pai ake ai te aukati i te hopu.Ka taea hoki te whakaputa i runga i nga whakaritenga a nga kaihoko.
Ko te kara Drill Taumaha he waahanga nui o te mahi a Jcdrilltaputapu keri poka ki raro.Ko nga kara Drill he taumaha ki runga moka mo te keri i roto i nga hanganga.Ka taea e nga kaitarai rig te aro turuki i te taumaha e pa ana ki te moka ma te aro turuki ma nga tatauranga ngawari, me te tauine tohu taumaha, i runga i te papa riu.Ko nga kara o nga kara he 31 'putu te roa, he pakitara matotoru, he rino taumaha.Ka tae mai he pouaka ma te pine me nga hononga rite, kia pai ai te mate i nga mea e hiahiatia ana, kia eke ki te taumaha e hiahiatia ana.Ko nga kara o te Drill ka tae mai ki te OD, ka hangaia ranei ki te miihini ki nga awaawa helical (nga kara hiko).Ka mau a Jink i te maha o nga karaehe waro rino i roto i nga taonga.Kara Arataki Ko te tikanga o nga kara arataki he whakatakoto i te waahi poto ki waenga i te moka keri, me te whakapumau moka tata.Koinei tetahi atu huarahi ka hoatu e Jcdrill ki a koe te kaha ki te whakatika i o hiahia mahi i te wa e puta ake ai nga wero o raro.Ma te taapiri i tenei mokowhiti poto i waenga i te moka, me te tata moka, ka whakapakeke koe i te BHA wright i te moka, ka whakaiti i te hikoi moka, na reira, ka whakatairanga i te kohao tika.Ka mau a Jcdrill i te maha o nga kara o te waro maitai i roto i nga taonga.
| m | |||||
| Hoahoa | O | D | ID | Te roa | Diamita Chamfer |
| in | mm | +1.6-0.0mm | +152.4mm | +0.4mm | |
| NC23-31 | 3 1/8 | 79.4 | 31.8 | 9.15 | 76.2 |
| NC26-35 | 3 1/2 | 88.9 | 38.1 | 9.15 | 82.9 |
| NC31-41 | 4 1/8 | 104.8 | 50.8 | 9.159.45 | 100.4 |
| NC35-47 | 4 3/4 | 120.7 | 50.8 | 9.159.45 | 114.7 |
| NC38-50 | 5 | 127 | 57.2 | 9.159.45 | 121 |
| NC44-60 | 6 | 152.4 | 57.2 | 9.159.45 | 144.5 |
| NC44-60 | 6 | 152.4 | 71.4 | 9.159.45 | 144.5 |
| NC44-62 | 6 1/4 | 158.8 | 57.2 | 9.159.45 | 149.2 |
| NC44-62 | 6 1/4 | 158.5 | 71.4 | 9.159.45 | 150 |
| NC46-65 | 6 1/2 | 165.1 | 57.2 | 9.159.45 | 154.8 |
| NC46-65 | 6 1/2 | 165.1 | 71.4 | 9.159.45 | 154.8 |
| NC46-67 | 6 3/4 | 171.5 | 57.2 | 9.159.45 | 159.5 |
| NC50-70 | 7 | 177.8 | 57.2 | 9.159.45 | 164.7 |
| NC50-70 | 7 | 177.8 | 71.4 | 9.159.45 | 164.7 |
| NC50-72 | 7 1/4 | 184.2 | 71.4 | 9.159.45 | 169.5 |
| NC56-77 | 7 3/4 | 196.9 | 71.4 | 9.159.45 | 185.3 |
| NC56-80 | 8 | 203.2 | 71.4 | 9.159.45 | 190.1 |
| 6 5/8REG | 8 1/4 | 209.6 | 71.4 | 9.159.45 | 195.7 |
| NC61-90 | 9 | 228.6 | 71.4 | 9.159.45 | 212.7 |
| 7 5/8REG | 9 1/2 | 241.3 | 76.2 | 9.159.45 | 223.8 |
| NC70-97 | 9 3/4 | 247.7 | 76.2 | 9.159.45 | 232.6 |
| NC70-100 | 10 | 254 | 76.2 | 9.159.45 | 237.3 |
| 8 5/8REGc | 11 | 279.4 | 76.2 | 9.159.45 | 266.7 |
