DOWNHOLE HYDRAULIC ELECTRIC POWER STATION HYDRAULIC UNIT Russian patent published in 2009 - IPC F03B13/06 F03B13/10 

FIELD: engines and pumps.

SUBSTANCE: invention relates to power engineering and can be used for electric power generation. Proposed hydraulic unit comprises hydraulic turbine coupled with electric generator. Note here that hydraulic turbine represents turbodrill 10, electric generator represents electric drill 14 with their housings 17 and 18 integrated via sub 19 and armature-spindle 15 of electric drill 14 with rotor of turbodrill 10. Electric drill 14 is arranged above turbodrill 10. Housing 17, of electric drill 14 is coupled with lower end of drilling ripe string, the string upper end being fixed at the well mouth. Sub 19 has holes 20 communicating the well with hydraulic inlet of turbodrill 10 and hydraulic channel of armature-spindle 15 of electric drill 14. Well lower end represents its bottom, while well lock-down assembly represents bottom support jointed with lower part of housing 18 of turbodrill 10 arranged to take hydraulic unit forces and to turn hydraulic unit through. Note that well walls can also make borehole bearing element. Aforesaid lock-down assembly represents either mechanical or hydraulic wall packer jointed to lower part of housing 18 of turbodrill 10.

EFFECT: higher reliability and simplified design.

4 dwg