EN
The Diverter
Diverter system is a key component of offshore drlling mostly, and it always services the surface layer driling before BOP. The diverter assembly is the uppermost component of the riser system. It is not used to shut or seal the well completely, but to either direct the returning drill fluid or control the blowout and surface layer gas. When encountering the gas, the diverter can close off around drillpipe or casing, and open the special direction vent line on board at the same time. With the platform manifold, the gas will be guided and choked at special point.
Diverter system must be equipped with hydraulic control system to use. With the different size of packers, it is able to seal various shapes and sizes of driling tools including Kelly, drill pipes, tool joints, drill collar, etc.
|
Table 3 Technical parameters of DTC 49-500 diverter system |
Table 4 Size and technical parameters of insert type packer fo DTC 49-500 diverter |
|||||
|---|---|---|---|---|---|---|
| ltem | Parameters | Remark |
ID of insert packer (IN)/(mm) |
Sealing range |OD of cosing/ dil pipe (IN)/(mm) |
Hydroulic oil volume (Galon)/L) |
|
| Applicable rotary table | 49 1/2” | 10.00/254 | 5.00/127 | 2.7/10.2 | ||
| The max diameter of bits through | 47” | 5.5/139.7 | 2.5/9.5 | |||
| Working pressure | 500 psi | 6.625/168.28 | 2.2/8.4 | |||
| Shell test pressure | 750 psi | 7/177.8 | 1.9/7.2 | |||
| Max bore (diverter assembly) | 711.2 mm (28”) | 7.625/193.7 | 1.7/6.5 | |||
| Weight of diverter assembly/kg) | 18658 kg | wittout ball valve) | 8.625/219.08 | 1.3/4.9 | |||
| Weight of diverter system(kg) | 20068 kg (excluding overshot spooll ) | Diverter assembly.Overshot packer, Vefsnof manarel | 13.5/342.9 | 9.625/244.48 | 3.6/13.6 | |
| Temperature Grade | T20(-29℃~121℃) | 10.75/273.05 | 3.0/11.4 | |||
| Well fluid | Meet NACE MR0175 | 11.75/298.45 | 2.5/9.5 | |||
| The outlet’s ball valve of the diverter | 12” ball valve | Quantity: 3 | 17.75/450.85 | 13.375/339.72 | 5.0/19 | |
| 4" ball valve | Quantity: 4 | |||||
| Dimention | 2183×2086×Lmm | The height can be changed according to the uses"requrement | 16.00/406.4 | 2.1/8 | ||
| Seal range | 5”-22” | 22.00/558.8 | 18.62/472.95 | 5.0/19 | ||
|
The task No, of the Amencän bureau of shipping |
33865 | 20.00/508 | 3.1/11.8 | |||
Diverter system must be equipped with hydraulic control system to use. With the different size of packers, it is able to seal various shapes and sizes of driling tools including Kelly, drill pipes, tool joints, drill collar, etc.
> 49”-500psi Diverter(Complete Shut Off)
> Used on the majority of floating rigs
> Complete open-hole shutoff with 20” through-bore
> Switch on or off quickly
> Housing accommodates large diameter rise buoyancy modules
> High capacity systems available for supporting the Riser String from Diverter housing in emergency
hang-off situations
