US PATENT SUBCLASS 324 / 369
.~.~.~.~.~ While drilling

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

323  DF  OF GEOPHYSICAL SURFACE OR SUBSURFACE IN SITU {7}
347  DF  .~ Using electrode arrays, circuits, structure, or supports {2}
354  DF  .~.~ Coupled to artificial current source {2}
357  DF  .~.~.~ Including separate pickup of generated fields or potentials {6}
366  DF  .~.~.~.~ For well logging {7}
369.~.~.~.~.~ While drilling

DEFINITION

Classification: 324/369

While drilling:

(under subclass 366) Subject matter associated with a drill string so that measurements can be carried out during drilling of the borehole.

SEE OR SEARCH THIS CLASS, SUBCLASS:

355, for borehole logging while drilling in which a parameter of current from an artificial current source is measured.

SEE OR SEARCH CLASS

73, Measuring and Testing,

152.03+, for formation logging, per se, in a borehole while drilling, and subclasses 152.19+ and 152.43+ for a borehole or drilling test while drilling wherein the measurement or the analysis is not made by purely electrical means or purely magnetic means.