.~.~.~> Tracer being or including radioactive material
DEFINITION
Classification: 250/259
(under subclass 256) Subject matter which includes means to add the material into the well or the earth about the well whereby the means to detect senses the radiation emitted naturally from the material, or radiation caused by or modified by the material interacting with the radiation produced by the means to expose the materials to radiation.
(1) Note. The material may be solid liquid, gas, particulate or entrained within a fluid.
(2) Note. The means to eject the tracer material into a well is included here as a subcombination not classified elsewhere.
(3) Note. Materials which are not radioactive, but are made radioactive in the well are placed here along with materials which can control radiation in some manner.
SEE OR SEARCH THIS CLASS, SUBCLASS:
302+, for methods detecting tracer materials which emit or modify radiation generally.
