FIELD: well drilling technology.
SUBSTANCE: device is mounted in drilling pipe mated through sub to another drilling pipe provided with filter, device has body with apertures for liquid flow through turbogenerator, hydraulic turbine, shaft support assembly for hydraulic turbine and electromechanical generator also made in form of saddle with apertures outside the turbogenerator, covered by spring-loaded valve, washing liquid loss regulator passing through hydraulic turbine. Said washing liquid loss regulator is provided with circular hollow inserts which are mounted in apertures of saddle and project above its surface for contact with spring-loaded valve, and length of shelves is greater than diameter of filter apertures in drilling pipe.
EFFECT: protection of washing liquid loss regulator from hard particles in washing liquid and higher durability of washing liquid loss regulator members.
2 cl, 2 dwg
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