When wellhead pressure is less than 4MPa ,it can be used for self-sealing pipe string and carrying lower tubing According :API
Technical parameters:
•Annular BOP speciafications FH18-35
•Specifications of upper and lower special dedicated single-ram BOP:TFZ18-35
•Ram BOP speciafication :3FZ18-35
•Rated working pressure :≤35MPa
•Lifting hydro cylinder travel:3300mm
•Maximum pressure for lifting hydro cylinderr:38T
•Maximum top force for lifting hydroo cylinder :70T
•Average speed for lifting hydro cylinder travel:16m/min
BYJ (DYZY)18-21/35 standard pressurized operation unit BOP system has its static sealing pressure of 35MPa, dynamic sealing pressure of 21MPa. One system can be operated in four difference ways upon different pressure :
When wellhead pressure is less than 4MPa, it can be used for self-sealing pipe string and carrying lower tubing
When the pressure is 5-14MPa, spherical plastic core annular BOP can be used for sealing pipe string , carrying lower tubing and passing couping .
When the pressure reaches 15-21MPa, two special single-ram BOP and rising cross tee may be used to pour out tubing and couping
When the pressure reaches 21-35MPa, operation may stop and lower ram BOP may be closed .
Pressure grade 70MPa, stroke of hydro cylinder travel:3.3m, the entire units is equipped with 70MPa annular BOP and ram BOP ,while hydraulic double-ram BOP is equipped with shear ram, Dynamic sealing pressure is 35-70MPa ,while static sealing pressure is 70MPa
With R&D and design liaohe Oilfield jointly, the first 70MPa high-pressure pressurized operation unit produced by us is proved by the site use by the Liaohe Oilfield that the entire unit is of stable performance ,easy to operate, safe and reliable seal. seal to maintain , so it was granted with the first prize of scientific and technological progess in 2008 by Liaohe Oilfield .
Hydraulic rig assist units
