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Running In And Pulling Out Devices For Back-Pressure Valves
Destination:
The running in and pulling out device for backpressure valves is delivered together with all accessories necessary for well shutting-off jobs, fracturing and acidization.
The running in and pulling out devices allow the displacement of master valves, after the mounting of back-pressure valves.
The technology of well shutting-off by setting a back-pressure valve or a plug in the tubing hanger avoids well killing with drilling mud, this offering considerable economical and time advantages.
The back-pressure valves and plugs are designed to withstand the working pressure of the X-mas trees in which they are mounted.
The size ratings of the back-pressure valves and plugs are according to API sizes of the tubing string.
Constructive and technical characteristics
- max. working pressure: 700 bar
- stem diameter: 30 mm
- max. stem stroke: 4300 mm
| Hanger size | Inches | 2 3/8 | 2 7/8 | 3 1/2 | 4 | 4 1/2 |
| Nominal size of back-pressure valve or test plug | Inches | 2 | 2 1/2 | 3 | 3 1/2 | 4 |