(under subclass 152.54) Subject matter including (a) a pipe which lines all of or a portion of a wall of the borehole or (b) a cementing of a lining in the borehole and wherein the determination of the characteristic of the borehole is made by measuring a property of the lining or the cementing.
SEE OR SEARCH THIS CLASS, SUBCLASS:
152.15, for a formation logging apparatus or process for determining a characteristic of the borehole by measuring the effect of cement within a borehole on vibration combined with measuring radioactivity.
152.16, for well logging including plural types of tests including making a determination of a characteristic of a casing by measuring an effect of the casing on vibration and not combined with radioactivity measuring.
SEE OR SEARCH CLASS
166, Wells,
253.1, for a comprehensive process relating to wells which includes indicating the location, the presence, or the absence of cement wherein more well detail is recited than that which is necessary to perfect the test.
250, Radiant Energy, 257, for a well testing apparatus and method utilizing measurement of radioactivity combined with detection of a casing collar.
340, Communications: Electrical,
854.5, for well bore telemetry wherein either downhole equipment or a transmission link is described to electrically conduct or process information signals which are transmitted
through a casing of a borehole to a location above the borehole.
367, Communications, Electrical: Acoustic Wave Systems and Devices,
35+, for the communication of information or intelligence in the form of acoustic waves traveling in the earth which are detected by means which travels through a borehole means generating an electric signal which represents the communicated information or intelligence and wherein the information or intelligence pertains to the borehole itself or to a lining of the borehole.
