US PATENT SUBCLASS 73 / 152.01
BOREHOLE OR DRILLING (E.G., DRILL LOADING FACTOR, DRILLING RATE, RATE OF FLUID FLOW)

Current as of: June, 1999
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73 /   HD   MEASURING AND TESTING

152.01BOREHOLE 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}
152.18  DF  .~> Fluid flow measuring or fluid analysis {6}
152.43  DF  .~> During drilling {3}
152.51  DF  .~> Pressure measurement {2}
152.54  DF  .~> Downhole test {5}
152.61  DF  .~> Pump test {1}

DEFINITION

Classification: 73/152.01

BOREHOLE OR DRILLING (E.G., DRILL LOADING FACTOR, DRILLING RATE, RATE OF FLUID FLOW):

(under the class definition) Subject matter comprising a process or an apparatus for determining a physical characteristic of a borehole, a casing, or a drill rigging.

SEE OR SEARCH THIS CLASS, SUBCLASS:

19.01+, for gas content measuring, per se, especially subclass 19.09 for measuring the gas content of mud.

23.2+, for gas analysis, per se.

32+, for density measuring, per se.

53.01+, for fluid analysis, per se.

170.01, for fluid flow direction measuring, per se, in a naturally occurring body of water.

861+, for a rate of fluid flow measuring not in a borehole. 863+, for sampling, per se, of mud not in a well and of gas sampling from the soil by means sunk into the ground to a point not far from the surface of the ground, and especially subclass 864.52 for sampling devices comprising a receptacle with suction means.

866, for material analysis, per se.

SEE OR SEARCH CLASS

33, Geometrical Instruments,

304+, for a geometrical indicator for borehole study and especially for a borehole direction or inclination indicator.

116, Signals and Indicators,

112+, for mechanical indicators of a predetermined fluid flow and subclasses 264+ for a mechanical indicator of the presence or the absence of fluid flow where no measuring transducer is recited.

166, Wells,

64, 66, and 113 for well structure combined with measuring and testing means wherein more structure than is necessary to perfect the testing is recited, subclass 250.02 for a comprehensive well process combined with permeability determining wherein more well detail than is necessary to determine permeability is recited, and subclass 264 for a well process comprising merely sampling a well fluid.

175, Boring or Penetrating the Earth,

40+, for a process or means of measuring or testing combined with more than a nominal recitation of an earth boring process or apparatus. 250, Radiant Energy,

256+, for testing in a well bore by measuring radiant energy.

324, Electricity: Measuring and Testing,

323+, and 355+ for measuring an electrical property of a borehole, in particular subclasses 366+ for well logging involving measuring an electrical property of borehole formation, and subclass 425 for measuring electrolyte properties, per se.

340, Communications: Electrical,

853.1+, for well bore telemetry wherein information signals are transmitted to or from means located in a passageway in the earth.

342, Communications: Directive Radio Wave Systems and Devices (e.g., Radar, Radio Navigation),

22, for a radar system which is used in geophysical exploration, as for example, radar sets which are lowered down a borehole to determine the size of the borehole.

346, Recorders, appropriate subclasses for recorders for recording the operation of machines and especially

33+, for a recorder combined with external recorder operating means including a well logging device, and subclasses 112+ for a graph-type recorder.

356, Optics: Measuring and Testing, subclasses 241.1+ for

making borehole or drilling study by measuring visible light. 364, Electrical Computers and Data Processing Systems,

506, for application of an electrical computer or data processing to testing of borehole or drilling when significant electrical computer or data processing detail combined with a nominally recited sensor are recited.

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

25+, for the communication of information or intelligence in the form of acoustic waves traveling through earth and detected by electric signal handling means passing through a well bore and providing information pertaining to a characteristic or a location of discontinuities within the earth, subclasses 81+ for the communication of information or intelligence in a well bore in the form of acoustic waves traveling in a medium in the well bore different from the surrounding earth and providing information pertaining to a characteristic or a location of discontinuities within the earth, and subclasses 86+ for the communication of information or intelligence in the form of acoustic waves traveling through earth detected by electric signal handling means passing through a well bore and providing information pertaining to a characteristic or a location of discontinuities within the earth for electroacoustic borehole testing and wherein the intelligence pertains to the walls of the borehole and is obtained from a device which travels through the passageway and emits acoustic waves into a medium contained within the borehole (e.g., water, air, etc.) which are reflected from the walls back to the device and are detected.

374, Thermal Measuring and Testing,

136, for measuring a temperature at a single location in a well bore.

422, Chemical Apparatus and Process Disinfecting, Deodorizing, Preserving, or Sterilizing, appropriate subclass for testing involving a chemical reaction.

435, Chemistry: Molecular Biology and Microbiology,

9, for a process for quantitative or qualitative testing for mineral deposits by use of microorganisms which thrive in the presence of such minerals.

436, Chemistry: Analytical and Immunological Testing,

25+, for a chemical analysis of a borehole.