US PATENT SUBCLASS 73 / 152.23
.~.~ With sampling

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}
152.18  DF  .~ Fluid flow measuring or fluid analysis {6}
152.23.~.~ With sampling {3}
152.24  DF  .~.~.~> From formation wall {2}
152.27  DF  .~.~.~> Pressure
152.28  DF  .~.~.~> Downhole

DEFINITION

Classification: 73/152.23

With sampling:

(under subclass 152.18) Subject matter including means for obtaining a predetermined portion of the fluid to be tested.

SEE OR SEARCH THIS CLASS, SUBCLASS:

23.41, for sampling combined with a gas analyzer.

61.55, for sampling combined with an apparatus for measuring a content or an effect of a constituent of a liquid mixture.

64.56, for a sampling combined with a liquid analyzer.

152.07, for formation logging by measuring density, porosity, or permeability of a core sample.

152.09, for formation logging by measuring oil, gas, or water saturation of a core sample.

152.11, for formation logging, per se, by a core sample analysis. 863+, for sampling, per se, of mud not in a well and of gas sampling from the soil by means sunk into the ground to a point not far from the surface of the ground and especially subclass 864.52 for sampling devices comprising a receptacle

with suction means.

SEE OR SEARCH CLASS

166, Wells, appropriate subclass, especially

107+, 142+, and 162+ for the combination of a well structure and fluid flow measuring wherein more well structure is recited than that which is necessary for perfecting the measurement or subclass 264 for sampling well fluids (including gas), per se.

175, Boring or Penetrating the Earth,

48, for measuring or indicating drilling fluid flow combined with more than a mere boring step or detail of a boring apparatus and subclasses 232+, 244+, and 308+ for means to receive and retain a sample from an earth formation, including solid earth, in an earth boring tool.