ELEVATOR ARRANGEMENT FOR OVERHAUL OF WELLS Russian patent published in 2003 - IPC

FIELD: oil and gas industry. SUBSTANCE: invention can be used in pumping plants, lifting gears and aggregates. Invention includes vehicle, hinged boom, elevator winch with weight lifting elements. Elevator arrangement is equipped with well-head platform hinged to elevator boom and made of several parts. Central part of well-head platform has window above well-head and mobile platform mounted for rectilinear movement towards window. Prior to installation of central part in transportation position two right and one left hinged parts of platform are piled up on it. Boom of elevator includes bracket with holes made fast to it for re-installation of well-head platform by height with the aid of elevator winch. Arrangement is fitted with bearing posts having fixing holes for installation of well-head platform in horizontal position. Well-head platform carries quick-detachable ladders, columns with handrails, pillars of drill cover and canvas. EFFECT: decreased waste of time, transportation charges and operation expenses, secured ecological safety requirements. 4 dwg