Drill Collar-Slick na Spiral Downhole Pipe
Emere olu akwa a site na AISI 4145H ma ọ bụ mechaa nchara nchara nchara, edozi ya dịka ọkọlọtọ API SPEC 7.
N'ime usoro mmepụta ihe niile, a na-achọpụta data ule nke nyocha arụmọrụ nke ihe ọ bụla, site na oghere ọrụ, ọgwụgwọ okpomọkụ na eriri njikọ na usoro nrụpụta ndị ọzọ.
Nchọpụta ihe olu akwa bụ kpam kpam dịka ọkọlọtọ API si dị.
Eriri niile na-enweta ọgwụgwọ phosphatization ma ọ bụ ọla kọpa iji mee ka nguzogide corrosion ha dịkwuo elu ma gbanarị ihe ngosi eriri eriri ngwaọrụ.
Ụlọ ọrụ anyị nwere ike hazie slips na elevator grooves na akuakuzinwo olu olu dị ka kwa onye ọrụ chọrọ.
Nka nka:
| Kpọọ ihe nrịbama eri | OD | NJ | Ogologo mm | ||
| mm | in | mm | in | ||
| NC23-31 | 79.4 | 3-1/8 | 31.8 | 1-1/4 | 9150 |
| NC26-35 | 88.9 | 3-1/2 | 38.1 | 1 1/2 | 9150 |
| NC31-41 (2-7/8IF) | 104.8 | 4-1/8 | 50.8 | 2 | 9150 |
| NC35-47 | 120.7 | 4-3/4 | 50.8 | 2 | 9150 |
| NC38-50 (3-1/2IF) | 127.0 | 5 | 57.2 | 2-1/4 | 9150 |
| NC44-60 | 152.4 | 6 | 57.2 | 2-1/4 | 9150/9450 |
| NC44-60 | 152.4 | 6 | 71.4 | 2-13/16 | 9150/9450 |
| NC44-62 | 158.8 | 6-1/4 | 57.2 | 2-1/4 | 9150/9450 |
| NC46-62(4IF) | 158.8 | 6-1/4 | 71.4 | 2-13/16 | 9150/9450 |
| NC46-65(4IF) | 165.1 | 6-1/2 | 57.2 | 2-1/4 | 9150/9450 |
| NC46-65(4IF) | 165.1 | 6-1/2 | 71.4 | 2-13/16 | 9150/9450 |
| NC46-67 (4 IF) | 171.4 | 6-3/4 | 57.2 | 2-1/4 | 9150/9450 |
| NC50-67 (4-1/2IF) | 171.4 | 6-3/4 | 71.4 | 2-13/16 | 9150/9450 |
| NC50-70 (4-1/2IF) | 177.8 | 7 | 57.2 | 2-1/4 | 9150/9450 |
| NC50-70 (4-1/2IF) | 177.8 | 7 | 71.4 | 2-13/16 | 9150/9450 |
| NC50-72 (4-1/2IF) | 184.2 | 7-1/4 | 71.4 | 2-13/16 | 9150/9450 |
| NC56-77 | 196.8 | 7-3/4 | 71.4 | 2-13/16 | 9150/9450 |
| NC56-80 | 203.2 | 8 | 71.4 | 2-13/16 | 9150/9450 |
| 6-5/8 REG | 209.6 | 8-1/4 | 71.4 | 2-13/16 | 9150/9450 |
| NC61-90 | 228.6 | 9 | 71.4 | 2-13/16 | 9150/9450 |
| 7-5/8 REG | 241.3 | 9-1/2 | 76.2 | 3 | 9150/9450 |
| NC70-97 | 247.6 | 9-3/4 | 76.2 | 3 | 9150/9450 |
| NC70-100 | 254.0 | 10 | 76.2 | 3 | 9150/9450 |
| 8-5/8 REG | 279.4 | 11 | 76.2 | 3 | 9140/9450 |
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