shear ram การใช้

• The rams were of two types : " pipe rams " and " shear rams ".
• Normally, this flow can be stopped by activating shear rams contained in the blowout preventer ( BOP ).
• Studies done for the Minerals Management Service have questioned the reliability of shear rams in deep-water drilling.
• In that way, for example, a pipe ram BOP can be converted to a blind shear ram BOP.
• Underwater robots ( ROVs ) later were used to manually trigger the blind shear ram preventer, to no avail.
• "' Shear rams "'are designed to shear the pipe in the well and seal the wellbore simultaneously.
• The second line is activating a blowout preventer, which for Shell Oil in the Arctic involves a double shear ram for redundancy.
• Boosters ( auxiliary hydraulic actuators ) are frequently mounted to the outer ends of a BOP s hydraulic actuators to provide additional shearing force for shear rams.
• Since the pipe buckled when well control was lost, the blind shear rams would have failed to function as planned no matter when they were made active.
• Shear rams may be used as a last resort to cut through the drill pipe and shut off everything, including whatever might be coming up inside the drill pipe.
• The shear rams were not designed to function on the joints where the drill pipes were screwed together or on tools that were passed through the blowout preventer during well construction.
• The report concluded that the primary cause of failure was that the blind shear rams failed to fully close and seal due to a portion of drill pipe buckling between the shearing blocks.
• The report concluded that the primary cause of failure was that the blind shear rams failed to fully close and seal due to a portion of drill pipe trapped between the shearing blocks.
• After uncontrolled arrival of oil and gas at the rig floor, the blind-shear rams in the BOP stack failed to close due to the presence of off-centre drill pipe.
• Another hypothesis was that a junction in the drilling pipe may have been positioned in the BOP stack in such a way that its shear rams had an insurmountable thickness of material to cut through.
• Based on BP's video feeds of the operation the sealing cap assembly, called Top Hat 10, included a stack of three blind shear ram BOPs manufactured by Hydril ( a GE Oil & Gas company ), one of Cameron's chief competitors.
• "' Blind shear rams "'( also known as shear seal rams, or sealing shear rams ) are intended to seal a wellbore, even when the bore is occupied by a drill string, by cutting through the drill string as the rams close off the well.
• "' Blind shear rams "'( also known as shear seal rams, or sealing shear rams ) are intended to seal a wellbore, even when the bore is occupied by a drill string, by cutting through the drill string as the rams close off the well.