(under subclass 323) Subject matter relating to the determination of an electrical property of the fluid in a well, borehole, or other opening in the earth.
(1) Note. The fluid may be oil, gas, water, brine, or any other fluid.
SEE OR SEARCH THIS CLASS, SUBCLASS:
438, for determining the pH or conductivity of an electrolyte.
SEE OR SEARCH CLASS
73, Measuring and Testing,
152.18+, for fluid analysis in a borehole or drilling test wherein the analysis is not made by purely electrical or purely magnetic means.
204, Chemistry: Electrical and Wave Energy, 400+, as the residual home for apparatus used for electrolytic analysis or testing, per se.
205, Electrolysis: Processes, Compositions Used Therein, and Methods of Preparing the Compositions,
775+, as the residual home for a process of electrolytic analysis or testing, per se.
