US PATENT SUBCLASS 73 / 152.41
.~.~.~ Determining permeability or saturation

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}
152.39  DF  .~.~ Fluid injection into formation {1}
152.41.~.~.~ Determining permeability or saturation

DEFINITION

Classification: 73/152.41

Determining permeability or saturation:

(under subclass 152.39) Subject matter wherein the determination of the characteristic of the borehole, the casing, or the drill rigging is made by measuring either (a) a quality of either a bulk formation of a borehole or of selected constituents of a formation of a borehole to be penetrated by a liquid or a gas passing through pores or openings therein or (b) the maximum impregnation by gas, water, or oil of a bulk formation of a borehole or of selected constituents of a formation.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38, for measuring permeability by use of fluid pressure.

73+, for measuring the moisture content or absorption characteristic of a material.

152.05, for determination of a formation logging by measuring permeability.

152.06, for determination of a characteristic of a borehole by formation logging involving measuring permeability and oil, gas, or water saturation.

152.08, for determination of a formation logging by measuring oil, gas, or water saturation.