Embodiments of the present disclosure are directed toward a system and method to calibrate calipers of a downhole tool. Specifically, a calibration tool includes a substantially cylindrical calibration ring. The calibration tool also includes a finger coupled to the calibration ring. The finger is configured to engage with the downhole tool such that the calibration ring is mounted to the downhole tool and is coaxial with a tool axis of the downhole tool.

Disclosed is a device for detecting wall abrasion of a solid-filling feeding well and a detection method thereof. The device comprises a well wall abrasion detector, a horizontal displacement meter, a vertical displacement monitor, and a limit guide rod. One end of the limit guide rod is connected to the well wall abrasion detector. The signal output terminal of the well wall abrasion detector is connected to the signal input terminal of the horizontal displacement meter, and the other end of the limit guide rod passes through the vertical displacement monitor for slidable setting. This disclosure mainly utilizes a resistance strain displacement sensor to detect the abrasion and deformation degree of the well wall, determines the position of damages with the vertical displacement monitor, and draws wall abrasion curves by using the obtained data. The device provided is easy to use, has low cost, has high reliability, and can effectively detect the wall abrasion condition of a solid-filling feeding well, thereby providing a basis for ensuring the working efficiency of the feeding well.

Disclosed is a device for detecting wall abrasion of a solid-filling feeding well and a detection method thereof. The device comprises a well wall abrasion detector, a horizontal displacement meter, a vertical displacement monitor, and a limit guide rod. One end of the limit guide rod is connected to the well wall abrasion detector. The signal output terminal of the well wall abrasion detector is connected to the signal input terminal of the horizontal displacement meter, and the other end of the limit guide rod passes through the vertical displacement monitor for slidable setting. This disclosure mainly utilizes a resistance strain displacement sensor to detect the abrasion and deformation degree of the well wall, determines the position of damages with the vertical displacement monitor, and draws wall abrasion curves by using the obtained data. The device provided is easy to use, has low cost, has high reliability, and can effectively detect the wall abrasion condition of a solid-filling feeding well, thereby providing a basis for ensuring the working efficiency of the feeding well.

The invention relates to a device for industrially measuring measurement objects with a measuring probe that can be led up to the measurement object, on which measuring probe at least one distance sensor is provided for measuring instantaneous distance of a reference point of the measuring probe from a wall of the measurement. The measuring probe is rotatably supported on a retainer, which is fixed in relation to the measurement object and/or the position of which in relation to the measurement object is known. The device also include an evaluating apparatus designed to receive at least one distance value determined by the distance sensor and to associate the at least one distance value with a rotational position of the measuring probe in the context of a measurement. Means are provided for determining a change in the relative position between the retainer and the measurement object occurring during the measurement.

The invention relates to a device for industrially measuring measurement objects with a measuring probe that can be led up to the measurement object, on which measuring probe at least one distance sensor is provided for measuring instantaneous distance of a reference point of the measuring probe from a wall of the measurement. The measuring probe is rotatably supported on a retainer, which is fixed in relation to the measurement object and/or the position of which in relation to the measurement object is known. The device also include an evaluating apparatus designed to receive at least one distance value determined by the distance sensor and to associate the at least one distance value with a rotational position of the measuring probe in the context of a measurement. Means are provided for determining a change in the relative position between the retainer and the measurement object occurring during the measurement.

Various downhole logging tools and methods of using and making the same are disclosed. In one aspect, a downhole logging tool for inspecting one or more well tubulars includes a housing adapted to be supported in the one or more well tubulars by a support cable. A first transmitter, a second transmitter and a third transmitter are positioned in longitudinally spaced-apart relation in the housing and are operable to generate magnetic fields. Driving circuitry is operatively coupled to the first transmitter, the second transmitter and the third transmitter to selectively fire the first transmitter, the second transmitter and the third transmitter in multiple transmission modes to generate magnetic fields to stimulate pulsed eddy currents in the one or more well tubulars. A first receiver is positioned in the housing to sense decaying magnetic fields created by the pulsed eddy currents. Electronic circuitry is operatively coupled to the first receiver to determine a parameter of interest of the one or more well tubular from the sensed decaying magnetic fields.

A finishing method for material-removing finishing of a bore in a workpiece on a finishing machine, wherein a finishing tool removes material from the inner surface of the bore in a finishing operation and a shape measurement of the inner surface of the bore is performed on the finishing machine before, during and/or after the finishing operation, the method including introducing a measuring tool into the bore and generating a relative movement between the measuring tool and the workpiece, detecting geometry-relevant measurement values by the measuring tool, and evaluating the measurement values in an evaluation operation to ascertain at least one shape measurement value describes the macro shape of the bore inner surface, wherein the evaluation operation includes: filtering the measurement values generated by the measuring tool using a filter criterion and at least one filter parameter to ascertain filtered measurement values.

A finishing method for material-removing finishing of a bore in a workpiece on a finishing machine, wherein a finishing tool removes material from the inner surface of the bore in a finishing operation and a shape measurement of the inner surface of the bore is performed on the finishing machine before, during and/or after the finishing operation, the method including introducing a measuring tool into the bore and generating a relative movement between the measuring tool and the workpiece, detecting geometry-relevant measurement values by the measuring tool, and evaluating the measurement values in an evaluation operation to ascertain at least one shape measurement value describes the macro shape of the bore inner surface, wherein the evaluation operation includes: filtering the measurement values generated by the measuring tool using a filter criterion and at least one filter parameter to ascertain filtered measurement values.

Disclosed is a device for detecting wall abrasion of a solid-filling feeding well and a detection method thereof. The device comprises a well wall abrasion detector, a horizontal displacement meter, a vertical displacement monitor, and a limit guide rod. One end of the limit guide rod is connected to the well wall abrasion detector. The signal output terminal of the well wall abrasion detector is connected to the signal input terminal of the horizontal displacement meter, and the other end of the limit guide rod passes through the vertical displacement monitor for slidable setting. This disclosure mainly utilizes a resistance strain displacement sensor to detect the abrasion and deformation degree of the well wall, determines the position of damages with the vertical displacement monitor, and draws wall abrasion curves by using the obtained data. The device provided is easy to use, has low cost, has high reliability, and can effectively detect the wall abrasion condition of a solid-filling feeding well, thereby providing a basis for ensuring the working efficiency of the feeding well.

Disclosed is a device for detecting wall abrasion of a solid-filling feeding well and a detection method thereof. The device comprises a well wall abrasion detector, a horizontal displacement meter, a vertical displacement monitor, and a limit guide rod. One end of the limit guide rod is connected to the well wall abrasion detector. The signal output terminal of the well wall abrasion detector is connected to the signal input terminal of the horizontal displacement meter, and the other end of the limit guide rod passes through the vertical displacement monitor for slidable setting. This disclosure mainly utilizes a resistance strain displacement sensor to detect the abrasion and deformation degree of the well wall, determines the position of damages with the vertical displacement monitor, and draws wall abrasion curves by using the obtained data. The device provided is easy to use, has low cost, has high reliability, and can effectively detect the wall abrasion condition of a solid-filling feeding well, thereby providing a basis for ensuring the working efficiency of the feeding well.