US PATENT SUBCLASS 73 / 152.08
.~.~ Oil, gas, or water 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}
152.02  DF  .~ Formation logging (e.g., borehole studies of pressure derivatives or of pressure-temperature derivatives) {8}
152.08.~.~ Oil, gas, or water saturation {1}
152.09  DF  .~.~.~> By a core sample analysis

DEFINITION

Classification: 73/152.08

Oil, gas, or water saturation:

(under subclass 152.02) Subject matter wherein the determination of the physical characteristic of the borehole is made by measuring the maximum impregnation by gas, water, or oil of a bulk formation of a borehole or of selected constituents of a formation of a borehole.

(1) Note. Fluid saturation of the formation zone may be measured directly by radiation, electrical, acoustical, or other means or by comparison tests in which fluid originally occurring in a formation is replaced by fluid having a known

makeup.

SEE OR SEARCH THIS CLASS, SUBCLASS:

38, for measuring porosity or permeability by use of fluid pressure.

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

152.06, for a borehole formation logging by density, porosity, and permeability measuring and the measurement of oil, gas, or water saturation.

152.41, for a determination of a borehole physical characteristic by measuring saturation by the injection of fluid into a formation of a borehole. SEE OR SEARCH CLASS

324, Electricity: Measuring and Testing,

324+, for a purely electrical measurement of a borehole fluid, subclass 356 for measuring an electrical property in a borehole while drilling, and subclass 694 for measuring resistance or conductance in order to determine water content.