GEAR TO GUIDE BLOWOUT PREVENTER EQUIPMENT ON MOUTH OF GUSHER Russian patent published in 2002 - IPC

FIELD: well drilling. SUBSTANCE: invention is intended to guide blowout preventer equipment on sub of casing head of Christmas tree of gusher. Proposed gear includes drive to move blowout preventer equipment to vertical position, mouth gripper with lugs in which holes axle of gripper is put. Mouth gripper comes in the form of plate in which threaded fingers are placed. It is fitted with rest. Drive of vertical movement of blowout preventer equipment comes in the form of hydraulic cylinder with hollow rod. Gear is equipped with lock that fixes blowout preventer equipment relative to sub of casing head of Christmas tree. Drive of vertical movement of blowout preventer equipment is provided with bracket anchored on front cover of drive. Catch is made fast to front cover. Branch pipe is made fast to rear cover of hydraulic cylinder of drive of vertical movement of blowout preventer equipment. Branch pipe is hinged to drive of vertical movement of blowout preventer equipment. Possibility of guidance of blowout preventer equipment on sub of casing head of Christmas tree on gusher mouth is secured thanks to fitting gear with drive of vertical movement and lock fixing blowout preventer equipment with respect to Christmas tree. EFFECT: enhanced operational reliability of gear. 6 dwg