US PATENT SUBCLASS 166 / 77.1
.~ Moving tubing or cable into an existing well

Current as of: June, 1999
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166 /   HD   WELLS

75.11  DF  ABOVE GROUND APPARATUS {25}
77.1.~ Moving tubing or cable into an existing well {2}
77.2  DF  .~.~> Coiled tubing {1}
77.4  DF  .~.~> Piston and cylinder

DEFINITION

Classification: 166/77.1

Moving tubing or cable into an existing well:

(under subclass 75.11) Above ground apparatus comprising means for pushing a rope-like line or thin-walled pipe into a cased borehole.

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71, for a casing sinking means with a below ground modification.

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175, Boring or Penetrating the Earth,

162, for an above ground means to feed a boring tool into the earth.

254, Implements or Apparatus for Applying Pushing or Pulling Force,

29+, for pipe or rod jack. 405, Hydraulic and Earth Engineering,

232+, for processes and apparatus for installing piling.