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2 078 195

(13)

C1

(51)

IPC

(21) (22)

Application

93043914/03, 1993-09-03

(22)

Actual filing date

1993-09-03

(45)

Published

1997-04-27

(72)

Inventor

Razuvaev V.D.Matveenko L.M.

(73)

Holder

Konstruktorskoe Bjuro Proizvodstvennogo Ob"Edinenija

DEVICE FOR DRILLING DIRECTIONAL AND HORIZONTAL WELLS Russian patent published in 1997 - IPC

Abstract RU 2078195 C1

FIELD: drilling of directional and horizontal wells. SUBSTANCE: device for drilling directional and horizontal wells has drill bit, down-hole hydraulic motor, sleeve between the drill bit and motor shaft, string of drill barrels and drill pipes. Sleeve hollow contains a ball for rolling over its side walls. Sleeve hollow is confined by screen on the side of motor shaft and by partition of the side of drill bet. Partition has longitudinal equalling one half of ball diameter. EFFECT: increased efficiency of operation of the device in inclined and horizontal wells due to intensification of transmission of load to drill bit. 4 dwg

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RU 2 078 195 C1

Authors

Razuvaev V.D.

Matveenko L.M.

Dates

1997-04-27—Published

1993-09-03—Filed

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