(under subclass 152.23) Subject matter wherein the determination of the characteristic of the borehole is made by measuring pressure.
SEE OR SEARCH THIS CLASS, SUBCLASS:
37, for performing a test by use of fluid pressure.
152.22, for determination of fluid flow during drilling by measuring pressure.
152.51, for a determination of a physical condition of a borehole, a casing, or a drill rigging by measuring pressure.
700, for fluid pressure measuring, per se.
760+, for stress or strain measuring or testing by stress or strain.
862+, for force measuring, per se. SEE OR SEARCH CLASS
116, Signals and Indicators,
112+, for a pressure responsive mechanical alarm, per se, providing a humanly perceptible signal in response to a predetermined fluid flow, and subclass 266 for a pressure responsive mechanical indicator which provides a humanly
perceptible signal in response to the presence or the absence of fluid flow, in a borehole, a casing, or a drill rigging.
166, Wells,
64, 66, and 113 for detail of a well combined with determination of fluid flow by measuring or detecting pressure in a borehole wherein more well detail than is necessary to perfect the testing is recited.
175, Boring or Penetrating the Earth,
40+, for a process or means of determining fluid flow by measuring or detecting pressure combined with more than a nominal recitation of an earth boring process or apparatus.
340, Communications: Electrical,
611, for an electrical indicator or an electrical alarm which provides a humanly perceptible signal in response to a predetermined fluid flow via monitoring pressure in a borehole, a casing, or a drill rigging, and subclass 626 for an electrical indicator or alarm, per se, which provides a humanly perceptible signal in response to the detection of a predetermined pressure in a borehole, a casing, or a drill rigging.
364, Electrical Computers and Data Processing Systems,
420+, for the application of an electrical computer or data processing to the determination of fluid flow in a borehole, a casing, or a drill rigging by measuring pressure when significant electrical computer or data processing detail combined with a nominally recited sensor are claimed.
