Cementing Throttle Check Valve is applied for prevention of cement slurry backflow during
cementing and for self-priming of casing inner space during RIH.
Inner parts of the valve are made of easily drilled out materials.
| PARAMETER DESCRIPTION | VALUE | ||||
|---|---|---|---|---|---|
| Casing string nominal diameter RIH with CKOD valve, mm | 146 | 168 | 178 | 245 | 324 |
| Maximum outer diameter, mm | 166 | 187 | 194,5 | 270 | 348 |
| Drift diameter, mm | 130,7 | 152,3 | 161,6 | 226,7 | 304,9 |
| Ball diameter, mm | 76 | ||||
| Length in operating position, mm | 430 | 432 | 436 | 429 | 442 |
| Length in transport position, mm | 420 | 430 | 440 | 440 | 450 |
| Weight in operating position, kg | 19, 5 | 22,1 | 24,5 | 55,1 | 95,9 |
| Weight in transport position, kg | 20,4 | 23,2 | 25,7 | 56,4 | 98,3 |
| Maximum operating temperature1 , °C |
100 | ||||
| Maximum tensile force on the device body1 , kN (tn) |
900 (90) | 920 (92) | 1050 (105) | 1700 (170) | 1900 (190) |
| Maximum internal overpressure on the valve body, MPa | 25 | ||||
| Maximum differential pressure maintained by the valve, MPa | 15 | ||||
| Connecting threads3 : – top and bottom according to GOST 632-80 |
ОТТМ 146 | ОТТМ 168 | ОТТМ 178 | ОТТМ 245 | ОТТМ 324 |
1
Reference only, depends on operating conditions of general mechanical rubber goods in a well.
2
Calculated value when stresses reach yield point of the material.
3
OTTG or BTS connecting threads can be produced on Customer’s demand.
