Rosneftegazinstrument
BKM-299R1 Cement float shoe
BKM-299R1 Cement float shoe are designed for equipping the bottom of casing strings consisting of pipes in accordance with GOST 632-80, GOST 633-80, as well as strings consisting of smooth insert joint casings in order to direct them along the wellbore and protect them from damage during descent while fastening the oil and gas wells at the face temperature of +160 °C
| Parameter name | BKM–299R1 |
| Nominal diameter | 11 3/4″/ 299 mm |
| External diameter | 12 3/4″/ 324 mm |
| Central opening diameter | 5 15/16″/ 150 mm |
| Height | 15 3/16″/ 385 mm |
| Weight, lbs (kg), max. | 161 (73) |
| Compressive load kN (t), min | 390 (39) |