DRILLING RIG Russian patent published in 1995 - IPC

Abstract RU 2035580 C1

FIELD: exploratory drilling. SUBSTANCE: drilling rig has movable rotary head made in form of regulated electric motor with hollow rotary table forming opening to pass drill pipes. Hollow rotary table is rigidly connected with cage of upper grapple. Electric motor is coaxially located between upper and lower grapples and rigidly connected with carriage which in its turn is connected with hydraulic cylinders of feed and body of upper grapple. EFFECT: higher efficiency. 2 cl, 8 dwg

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RU 2 035 580 C1

Authors

Lobanov Ju.P.

Krugljakov Ju.I.

Shurygin A.A.

Dates

1995-05-20—Published

1992-12-30—Filed