US PATENT SUBCLASS 702 / 6
.~.~ Well logging or borehole study

Current as of: June, 1999
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702 /   HD   DATA PROCESSING: MEASURING, CALIBRATING, OR TESTING

1  DF  MEASUREMENT SYSTEM IN A SPECIFIC ENVIRONMENT {6}
2  DF  .~ Earth science {4}
6.~.~ Well logging or borehole study {5}
7  DF  .~.~.~> By induction or resistivity logging tool
8  DF  .~.~.~> By radiation (e.g., nuclear, gamma, X-ray)
9  DF  .~.~.~> Drilling
10  DF  .~.~.~> Dipmeter
11  DF  .~.~.~> Formation characteristic {1}

DEFINITION

Classification: 702/6

Well logging or borehole study:

(under subclass 2) Subject matter including a drill rigging apparatus or measuring tool for penetrating an earth formation to form a well bore or for investigating physical condition or a parameter related to the apparatus, the tool, the well bore or the earth formation.

SEE OR SEARCH CLASS

73, Measuring or Testing,

152.01+, for bore hole and drilling testing in general.

166, Wells,

250.01+, for well processes which includes indicating, testing, measuring, or locating, and subclass 66 for well apparatus including electrical signaling means.

175, Boring or Penetrating the Earth, 40+, for a process or means of measuring combined with an earth boring means.

250, Radiant Energy,

253, for invisible radiant energy detection in geological testing.

324, Electricity: Measuring and Testing,

323+, for electrical well bore testing.

340, Communications: Electrical,

853.1+, for telemetering a well bore environment.

364, Electrical Computers and Data Processing Systems, subclass 804, for the simulation of well logging by an analog computer.

367, Communication, Electrical: Acoustic Wave Systems and Devices,

25+, for well logging, subclasses 81+ for wellbore telemetering, and subclass 86 for borehole testing.