Downhole mobility and propulsion apparatus

Details Downhole mobility and propulsion apparatus Downhole mobility and propulsion apparatus

1985-04-03

1986-11-25

Leppink, James A.

Wells

Automatic

166 63, 166 651, 166 664, 166104, 166177, E21B 4400

Patent

active

046243062

ABSTRACT:
An apparatus which comprises an upper sub for connectable engagement with the wire line, a microprocessor component for directing the various functions of the overall apparatus down hole; a motor section having a plurality of thrust directional motors and ball screw assembly for movement of steering gates; a motor driven impeller means for providing thrust and flow through a portion of the apparatus and in combination with the flow gates providing steering in a certain direction; an electrical transducer portion for providing ultrasonic vibrations around the circumference of the apparatus in discongealing molecular substrate adjacent the apparatus; a mechanical vibration coil assembly means on the lower end of the apparatus for discongealing larger areas of congealing in a substrate around the apparatus, and a lower sub for connectably engaging the electrical logging unit to be steered down hole. The apparatus may also comprise on either end a thrust explosive sub for explosively dislodging the apparatus in the event of lodging occuring down hole.

REFERENCES:
patent: 3620313 (1971-11-01), Elmore et al.
patent: 4509593 (1985-04-01), Traver et al.

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