Vipengele vya Collar na Bomba
Kola ya kuchimba hutumika zaidi kutoa vijiti vya kuchimba visima na shinikizo la kuchimba visima, kuhakikisha nguvu ya kuvuta inapitishwa kwenye bomba la kuchimba na kuweka sehemu ya kati ya kuchimba visima.Kulingana na vipimo vya API Spec7-1, ubora wa nyenzo ni 4145H ambayo ni baada ya matibabu ya joto, matibabu ya ugumu wa nyuzi na fosfeti ili kuzuia kukamata.Pia inaweza kuzalishwa kulingana na mahitaji ya wateja.
Kola ya Kuchimba Uzito Mzito ni sehemu muhimu ya utendaji wa Jcdrillzana za kuchimba visima chini.Kola za kuchimba hutoa uzito kwa biti kwa kuchimba visima kupitia miundo.Wachimba visima huweza kufuatilia uzito unaotumika kwa biti kwa kufuatilia kupitia mahesabu rahisi, na mizani ya kiashirio cha uzito, kwenye sakafu ya tamba.Kola za kuchimba visima huwa na urefu wa futi 31', zenye ukuta nene, na chuma nzito.Huja kwa pini na viunganishi kama hivyo, ili kuoana kadiri inavyohitajika, kufikia uzito unaotaka.Kuchimba kola huja OD mjanja, au kutengenezwa kwa grooves ya helical (collars ond).Jink huhifadhi usambazaji mkubwa wa kola za kuchimba visima vya kaboni kwenye hisa.Madhumuni ya Kola za Lead ni kuweka nafasi fupi kati ya sehemu ya kuchimba visima na karibu na kiimarishaji kidogo.Hii ni njia nyingine tu ya Jcdrill hukupa uwezo wa kurekebisha mahitaji yako ya utendakazi huku changamoto za shimo la chini zikiibuka.Kwa kuongeza nafasi hii fupi kati ya biti, na karibu na kisu kiduchu, unaifanya mchongo wa BHA kuwa mgumu, ukipunguza kutembea kidogo, kwa hivyo, kukuza shimo lililonyooka.Jcdrill huhifadhi usambazaji mwingi wa kola za risasi za chuma cha kaboni kwenye hisa.
m | |||||
Kubuni | O | D | ID | Urefu | Kipenyo cha 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 |