HOISTING PLANT FOR SERVICING OIL AND GAS WELLS Russian patent published in 1996 - IPC

FIELD: oil and gas production; applicable in installations for round-trip operations with continuous steel pipe in operation and repairs of oil and gas wells. SUBSTANCE: mounted on the platform of transportation facility are operator's cabin, drum with continuous steel pipe, drum pipe layer, hydraulic pumping unit, hydraulically controlled supports and boom mechanism whose main section is hinged with platform. The main and additional section of boom mechanism are hinged to each other and are U-shaped in cross-section. Sections apertures are facing each other. In the transportation position the additional section is partially accommodated in the main section aperture. Arranged in aperture is hydraulic cylinder connecting the sections. Delivery mechanism is connected through carriage and platform with additional section, and is movable in mutually perpendicular planes. In a particular case of the plant embodiment, the hydraulic cylinder body located in section aperture may be connected with main section by means of levers hinged to each other and to bracket. In this case, bracket is rigidly secured to the platform. EFFECT: simple design and compact structure in transportation position. 2 cl, 5 dwg