Mkpọchi olu API 7K maka ọrụ eriri igwe na-egwu ala
E nwere ụdị DCS Drill Collar Slips atọ: S, R na L. Ha nwere ike ịnabata olu drill site na inch 3 (76.2mm) ruo inch 14 (355.6mm) OD.
Usoro Nkà na ụzụ
| ụdị slip | olu akwa igwe OD | ibu | inefere sere Mba | ||
| in | mm | kg | Ib | ||
| DCS-S | 3-46 3/4-8 1/4 | 76.2-101.6 | 51 | 112 | API ma ọ bụ Nke 3 |
| 4-4 7/8 | 101.6-123.8 | 47 | 103 | ||
| DCS-R | 4 1/2-6 | 114.3-152.4 | 54 | 120 | |
| 5 1/2-7 | 139.7-177.8 | 51 | 112 | ||
| DCS-L | 6 3/4-8 1/4 | 171.7-209.6 | 70 | 154 | |
| 8-9 1/2 | 203.2-241.3 | 78 | 173 | ||
| 8 1/2-10 | 215.9-254 | 84 | 185 | Nke 2 | |
| 9 1/4-11 1/4 | 235-285.7 | 90 | 198 | ||
| 11-12 3/4 | 279.4-323.9 | 116 | 256 | Nke 1 | |
| 12-14 | 304.8-355.6 | 107 | 237 | ||
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