Floating Valve for Wellbore Protection During Washing, Cementing, and Performing the “Stop” Function
SDT-111SG | ||||||||||||
Casing string size, mm | 102 | 114 | 140 | 146 | 168 | 178 | 194 | 245 | 273 | 324 | 340 | 426 |
Outer diameter, mm | 114 | 127 | 153,7 | 166 | 187,71 | 200 | 216 | 269,88 | 298,5 | 351 | 365,13 | 451 |
Length, mm, +/- 25 | 350 | 350 | 390 | 390 | 420 | 420 | 420 | 430 | 430 | 425 | 450 | 525 |
Operating temperature, ֯◌С | up -40 to +130 | |||||||||||
Flow section (check valve), km.mm | 1570 | 1570 | 1570 | 1570 | 1570 | 1570 | 1570 | 1570 | 1570 | 2440 | 2440 | 2440 |
Pressure drop sustained by the valve, from bottom to top, not less than, MPa | 35 | 35 | 35 | 35 | 30 | 30 | 30 | 25 | 25 | 20 | 20 | 15 |
Operation in the circulation mode of 20 l/sec with a sand content of 2-4% | 24 h | |||||||||||
Max. Colmatant particle size for pumping through a check valve | 3000 mkm |