Ukusebenza kwentambo ye-API 7K Drill Pipe Slip Drill String
Kunezinhlobo ezintathu ze-DU series Drill Pipe Slips: DU, DUL kanye ne-SDU. Zinebanga elikhulu lokuphatha kanye nesisindo esincane. Kulapho, ama-SDU slips anezindawo ezinkulu zokuthintana ngamandla aqinile kanye nokumelana okuphezulu. Aklanywe futhi akhiqizwa ngokwe-API Spec 7K Specification yemishini yokubhoboza kanye neyokulungisa imithombo.
Amapharamitha Obuchwepheshe
| Imodi | Usayizi Womzimba Oshelelayo (ngaphakathi) | |||||
| 4 1/2 | 5 1/2 | 7 | ||||
| I-DP OD | I-DP OD | I-DP OD | ||||
| in | mm | in | mm | in | mm | |
| DU | 2 3/8 | 60.3 | 3 1/2 | 88.9 | 4 1/2 | 114.3 |
| 2 7/8 | 73 | 4 | 101.6 | 5 | 127 | |
| 3 1/2 | 88.9 | 4 1/2 | 114.3 | 5 1/2 | 139.7 | |
| 4 | 101.6 | 5 | 127 | 6 5/8 | 168.3 | |
| 4 1/2 | 114.3 | 5 1/2 | 139.7 | 7 | 177.8 | |
| I-DUL | 2 3/8 | 60.3 | 3 1/2 | 88.9 | 4 1/2 | 114.3 |
| 2 7/8 | 73 | 4 | 101.6 | 5 | 127 | |
| 3 1/2 | 88.9 | 4 1/2 | 114.3 | 5 1/2 | 139.7 | |
| 4 | 101.6 | 5 | 127 | 6 5/8 | 168.3 | |
| 4 1/2 | 114.3 | 5 1/2 | 139.7 | 7 | 177.8 | |
| I-SDU | 3 1/2 | 88.9 | 4 1/2 | 114.3 | ||
| 4 | 101.6 | 5 | 127 | |||
| 4 1/2 | 114.3 | 5 1/2 | 139.7 | |||
| 5 | 127 | 6 5/8 | 168.3 | |||
| 5 1/2 | 139.7 | 7 | 177.8 | |||
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