APPARATUS FOR INCLINED DIRECTED BOREHOLES DRILLING Russian patent published in 1995 - IPC

FIELD: drilling. SUBSTANCE: apparatus has body, coaxially located in it chamber with pendulum and piston, hinged to the body by their lower ends supporting plates and located along axis of apparatus over each supporting plate and one over another working and delivering cylinders with pistons, cavities of which are connected to each other by pressure hose. Pendulum is hinged to spring-loaded piston and is mounted so as to be capable to be engaged with pistons of delivering chambers. Upper ends of supporting plates are hinged to pistons of working chambers. During cleansing liquid pressure creation piston together with pendulum is moving downwards and pendulum, preliminary oriented in required direction, using its end presses piston of delivering cylinder. From the cylinder through hose pressure is transferred into working cylinder cavity, causing depression of supporting plates, negligible longitudinal compaction of which makes big sagging, causing touching of borehole walls even in the case of caverns presence. In self-oriented apparatus hydraulic system of supporting plates work control is separated from cleansing solution. EFFECT: apparatus is used for boreholes drilling. 2 cl, 4 dwg