Slow rotating mole apparatus

Details Slow rotating mole apparatus Slow rotating mole apparatus

1994-05-27

1996-01-16

Schoeppel, Roger J.

Wells

With motor for rotary or oscillating motion

166223, E21B 4300

Patent

active

054840163

ABSTRACT:
A slow rotating mole apparatus for use in hydrablasting wellbores and pipelines. The apparatus generally consists of a motor section with a rotor rotatable in response to fluid flow through the motor section, a speed reducer section connected to the motor section such that an output speed of the speed reducer section is less than an output speed of the rotor, and a jetting section attached to the speed reducer section and rotated thereby at the speed reducer output speed. The speed reducer section and jetting section define a flow passage therethrough in communication with jetting ports in the jetting section so that the fluid pumped through the apparatus is jetted therefrom. The speed reducer section may include one or more gear reductions to achieve the desired rotational speed of the jetting section.

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Otis Engineering Corporation Brochure entitled "Break Down Buildups and Restore Production with Hydra-Blast.RTM. Services" (1988).
Paper entitled "Principles of Hydraulic Jet Cleaning" dated Jul. 2, 1987.
Catalog of Stoneage Waterjet Engineering (Undated but admitted to be prior art).
Halliburton Services Catalog Excerpt Section 6: Wellbore Cleanout (Jan., 1993).
Otis Engineering Corporation Products and Services Brochure (1989), p. 283.

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