US PATENT SUBCLASS 73 / 152.46
.~.~ Downhole measurement

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

152.01  DF  BOREHOLE OR DRILLING (E.G., DRILL LOADING FACTOR, DRILLING RATE, RATE OF FLUID FLOW) {6}
152.43  DF  .~ During drilling {3}
152.46.~.~ Downhole measurement {2}
152.47  DF  .~.~.~> Vibration
152.48  DF  .~.~.~> Force

DEFINITION

Classification: 73/152.46

Downhole measurement:

(under subclass 152.43) Subject matter wherein the apparatus for the determination of the physical characteristic of the borehole, the casing, or the drill rigging is located within the borehole while the measurement is being made.

SEE OR SEARCH THIS CLASS, SUBCLASS:

152.28, for downhole fluid flow measuring combined with sampling.

152.54+, for downhole measuring in a borehole while no drilling is taking place.

SEE OR SEARCH CLASS

175, Boring or Penetrating the Earth,

45, for a downhole measuring when more than a nominal recitation of a drilling process or structure is recited.