Down-hole drilling motor and method for directional drilling of boreholes

Patent · Tue Jan 08 00:00:00 EST 1985

OSTI ID:5700182

Kamp, A W

A down-hole drilling motor is provided with a bearing unit which supports the output shaft in such an inclined position relative to the motor housing, that the central axis of the output shaft intersects the longitudinal axis of the motor housing at a point of intersection located below the lower end of the housing. Directional drilling of a borehole is carried out by actuating a drill bit by means of the down-hole drilling motor, and simultaneously therewith rotating the drill string-and consequently also the motor housing-over periods that are preceded and succeeded by selected periods over which the drill string is not rotated.

• Assignee: Shell Oil Co.
• Patent Number(s): US 4492276
• OSTI ID: 5700182
• Resource Relation: Patent Priority Date: Priority date 13 Oct 1983, Netherlands; Other Information: PAT-APPL-541821
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
DIRECTIONAL DRILLING
DRILL BITS
COVERINGS
DRILL PIPES
ELECTRIC MOTORS
WELLS
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
MOTORS
PIPES
420206* - Engineering- Mining & Drilling Equipment & Facilities- (1980-1989)