DMD SERIES SUBSURFACE SAFETY VALVE
INTRODUCTION
Various kinds of new technology are applied in DMD series surface controlled
subsurface safety valves and perform very well in field applications, reducing
significantly common safety valve failures.
DMD series surface controlled subsurface safety valve is with flapper structure to
protect wireline from damages, non-elastomeric sealing technology and
metal-to-metal sealing and containment of wellbore fluids when the valve is in the
closed position.
25% safety valve failures are due to wireline damages in workover operation.
DMD series surface controlled subsurface safety valves involve the flapper design
for protection of wireline from damages and this design is so successful that it can
virtually eliminate such failure mode. This design ensures all seal surfaces are
protected from wireline contact even during accidental closure of the valve during
wireline operations.
DMD series surface controlled subsurface safety valves can be customized
according to specific needs, with available options such as integral chemical
injection capability, wireline damage resistant seal bores, and various control
system stop seal versions.
FEATURES
• Self-equalizing function of flapper
• Non-elastomeric dynamic seal assembly
• Wireline damage resistant flapper - design protects sealing integrity during
wireline operations.
• Metal-to-metal seal technology - 100% metal-to-metal sealing and
containment of wellbore fluids when the valve is in the closed position.
• Optional chemical injection capability - injection mandrel within the TRSV
eliminates the need for a mandrel above the valve and allows injection of
fluids directly into spring cavity for maximum effectiveness.
DMD SERIES SUBSURFACE SAFETY VALVE SPECIFICATIONS
| Size |
Max OD |
Max Seal Bore |
Working Pressure |
Setting Depth |
Max Temp. |
| In. |
in/mm |
in. |
psi |
ft |
m |
ºF |
ºC |
| 2-3/8 |
3.625/92 |
1.875 |
5,000 |
1300 |
396 |
300 |
149 |
| 3.625/92 |
10,000 |
| 3.5/88.9 |
9,000 |
| 2-7/8 |
4.51/114.55 |
2.313 |
5,000 |
1,500 |
457 |
300 |
149 |
| 10,000 |
| 3-1/2 |
5.185/131.7 |
2.813 |
5000 |
1,500 |
457 |
300 |
149 |
| 5.30/134.60 |
2.75 |
| 5.65/143.5 |
2.562 |
10,000 |
| 4-1/2 |
5.985/152 |
3.813 |
8,500 |
2,200 |
670 |
300 |
149 |
| 6.5/165.1 |
3.75 |
5,000 |
1500 |
457 |
| 7.403/188.00 |
3.688 |
10,000 |
| 5-1/2 |
7.73/196.30 |
4.75 |
5,000 |
1500 |
457 |
300 |
149 |
| 8.0/203.2 |
4.562 |
8,000 |
| 8.25/209.60 |
4.313 |
10,000 |
| 7 |
8.375/212.70 |
6.15/6/5.813 |
5,000 |
2000 |
609 |
300 |
149 |
| 9.2/233.60 |
10,000 |
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