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Annular BOPpreventer application scope
Well a drill, oil casing, seal with rubber core annular space;
Well no drill, sealed wells;
Blowout logging during drilling, coring, when can be closed, Kelly, the annular space core tools, cable and wire and wellbore between;
In the use of vacuum pressure regulating valve case, through 18 degrees without thin buckle welded drill pipe, forcibly pulled drills.
A spherical rubber core annular bop:
The hole size: 7-1/16 ~ 13-5/8 ""
Working pressure (PSI):3000 ~ 15000
Locking type: Hydraulic
Structure characteristics: General for not more than 35MPa and less than 13-5/8 "well, must be matched with the hydraulic control system of hydraulic drive, the piston moves up and down, forcing the spherical rubber core centripetal movement, squeeze to the well center or reset to realize wellhead of closed and open.
The top cover and the casing connection: flange bolt connection.
B type conical rubber core annular bop:
The hole size: 20-3/4 ~ 26-3/4 ""
Working pressure (PSI):3000
Locking type: Hydraulic
Structure characteristics: General for less than 21MPa and more than 13-5/8 "well, must be matched with the hydraulic control system of hydraulic drive, the piston moves up and down, forcing the rubber core centripetal movement, squeeze to the well center or reset to realize wellhead of closed and open.
The top cover and the casing connection: the claw block
C spherical rubber core annular bop:
The hole size: 11 "~ 13-5/8"
Working pressure (PSI):10000 ~ 15000
Locking type: Hydraulic
Structure characteristics: General for the wellhead high pressure, must be matched with the hydraulic control system of hydraulic drive, the piston moves up and down, forcing the spherical rubber core centripetal movement, squeeze to the well center or reset to realize wellhead of closed and open
The top cover and the casing connection: connecting wedge block

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