US PATENT SUBCLASS 166 / 264
.~ Sampling well fluid
Current as of: June, 1999
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DEFINITION
Classification: 166/264
(under subclass 244.1) A process comprising taking a limited amount of the fluid in a well or the adjacent earth for testing or measuring purposes.
(1) Note. No special steps for limiting the flow need be set forth for classification in this subclass. The mere statement is a claim that a sample is taken is sufficient. Merely setting a sampler in position, however, without the step of taking the sample is not sufficient for classification in this subclass. Such processes would be classifiable in subclass 315.
SEE OR SEARCH THIS CLASS, SUBCLASS:
369+, and the subclasses there noted for a process of producing a well.
SEE OR SEARCH CLASS
73, Measuring and Testing, 152.02+, for a process or apparatus for taking a sample from a well combined with making a determination of a physical characteristic of a well, a borehole casing, or a drill rigging wherein the test is not purely electrical or purely magnetic, in particular subclasses 152.07, 152.09, and 152.11 for core sample analysis for making a formation logging wherein the test is not purely electrical or purely magnetic, and subclasses 152.23+ for fluid flow measuring or fluid analysis combined with sampling well fluid wherein the test is not purely electrical or purely magnetic, and subclasses 863+ for a process or an apparatus for sampling a fluid not in a well or for a soil gas sampling process and apparatus.
175, Boring or Penetrating the Earth,
59, for processes of taking solid samples of earth formation combined with a step of retaining fluid therein or taking a separate fluid sample.
422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing,
50+, for apparatus for gas sampling involving use of sorbents or chemical treatments which may include a shaft sunk in the ground to collect gas for analysis.
436, Chemistry: Analytical and Immunological Testing,
1, 183 for gas sampling as part of a process of chemical testing.
