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float shoe (The float shoe prevents reverse flow, or U-tubing, of cement slurry from the annulus into the casing. The float shoe also guides the casing toward the center of the hole to minimize hitting rock ledges or washouts as the casing is run into the wellbore –  slb.com Alexander Demidov) | |||
| F/SHOE (oniko) | |||
| направляющий башмак с обратным клапаном: 4 phrases in 3 subjects |
| Drilling | 2 |
| Oil and gas technology | 1 |
| Sakhalin | 1 |