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Sheldahl David B, Striegler John H: Method of drilling. January 23, 1973: US3712393 (35 worldwide citation)

A composition and method for preventing catastrophic vibration of a drill string during slim hole drilling wherein there is employed an additive composed of sulfurized lard oil, mineral oil, and halogenated paraffin.


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Striegler John H: Slim hole drilling method. Atlantic Richfield Company, June 20, 1972: US3670832 (34 worldwide citation)

A slim hole drilling method wherein a wellbore of a diameter no greater than about 6 inches is drilled using a drill pipe rotation rate of at least 500 rpm and rotating the drill pipe with at least one electric motor operably connected to the drill pipe. Drilling power units for carrying out the dri ...


3
Striegler John H: Slim hole drilling electric power unit. Atlantic Richfield Company, April 3, 1973: US3724562 (27 worldwide citation)

A slim hole drilling power unit which employs at least one electric motor in mechanical connection with the drill pipe for rotating the drill pipe and moving with same as it advances toward and away from the wellbore. The power unit contains its own fan means so that no cooling air supply hose to sa ...


4
Kern Loyd R, Striegler John H: Downhole drilling tool bearing and seal assembly. Atlantic Richfield Company, MacDonald Roderick W, April 30, 1974: US3807513 (21 worldwide citation)

A downhole drilling tool for use with a downhole motor and bit wherein the shaft that connects the downhole motor with the bit has a housing around the outside thereof. The housing is spaced from the shaft to define an annular chamber between the shaft and housing. In the annular chamber an inner ch ...


5
Striegler John H: Bearing system. Atlantic Richfield Company, MacDonald Roderick W, February 18, 1975: US3866988 (12 worldwide citation)

A downhole drilling tool containing a liquid bearing means. In one suitable bearing means there is at least one bearing means comprising at least one first seal means and at least one second seal means, the first and second seal means being spaced apart from one another to define an inner chamber so ...


6
Striegler John H: Drilling tool and bearing system. Atlantic Richfield Company, May 1, 1973: US3730284 (9 worldwide citation)

A bearing system in an annulus between a shaft and a housing comprising a seal means in the annulus and bearing means on either side of the seal means, one of the bearing means having a piston means associated therewith to provide a lubricant reservoir which is sealed from external pressures and whi ...


7
Kern Loyd R, Striegler John H: Drilling tool and bearing system. Atlantic Richfield Company, March 27, 1973: US3722609 (2 worldwide citation)

A bearing system in an annulus between a shaft and a housing, the bearing system containing a seal means, and the seal means contacting a sealing surface means which maintains full sealing contact with the seal means notwithstanding lateral displacement of the shaft. A downhole drilling tool employi ...


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