DRILLING RIG FOR EXPLOSIVE METHOD FOR DRILLING Russian patent published in 2009 - IPC E21B7/00 

FIELD: oil and gas production.

SUBSTANCE: invention relates to drilling field and can be used for drilling of ultradeep well. Drilling rig includes tower, winch with motor and gearbox, polyspast system with load hook, connected to self-loading cartridge for bearing out from well to the surface of rock destroyed by means of explosive gear, bottom of which is implemented in the form of two leafs, merely supported in its bottom part, with ability of its return rotating in vertical plane and support on bearing elements with formation of mentioned bottom. Installation is outfitted by hand truck for supplying to wellhead of hollow container and transportation from mouth of container with rock. Hand truck allows additional area for location on it and supplying to wellhead of exploding charge, implemented in the form of bomb, placed in depth charge thrower, containing draw tube, release and retraction lock for bomb, connected to electric drive. In container it is installed tank, allowing in cross-section shape of rectangle, and container by means of pins is suspended to cross bar, shape and dimensions of which repeat shape and dimensions of container. Cross bar in top part is implemented with pot for catching of rock during explosive charging of container, on pot of cross bar it is fixed pin, connected to load hook of polyspast system, and for self-loading of container in bottom under bottom of container, in channel, allowing semicircular shape, throughout the perimetre of container from internal side it is placed supported by bars explosive. Two container leaves are fixed on opposite sides of inner walls of container, and before charging of container there are inclined suspended on hooks with ability of its release and recess action.

EFFECT: invention provides for reduction of costs for drilling of ultradeep wells of high diametre.

20 dwg, 1 tbl