Abstract: Embodiments described herein provide a multi-diameter thrust device that includes one or more thrust cups. Each thrust cup of the one or more thrust cups includes a first axial end hub disposed at a first axial end of the thrust cup; a second axial end hub disposed at a second axial end of the thrust cup; and a plurality of bowsprings. The thrust device is coupled to a wheel arrangement to limit an outer diameter of the one or more thrust cups.

Abstract: A downhole borehole imaging tool and methods for determining a borehole size includes a magnetoresistive system and a hub moveably coupled to a fixed tool string. The hub includes a magnet. The magnetoresistive system includes magnetoresistive sensors disposed within the fixed tool string and segregated from the magnet. During operation, a routine scan of all sensors measures, for example, the output voltage V, angle ? of magnetic field, and temperature. Measurements from each sensor may then be characterized to account for temperature and input voltages variation of the sensors. The most accurate measurement can be used to derive the position of the hub 44 using the previous baseline parameters stored in the tool.

Abstract: Embodiments described herein provide systems and methods for minimizing deceleration of downhole tools when the downhole tools are pumped down into wellbores through drill pipe in an untethered manner. For example, embodiments described herein include a hydraulic downhole tool deceleration system that includes a hydraulic decelerator configured to be affixed to a downhole tool string pumped down through drill pipe during operation. The hydraulic decelerator is configured to contact a hard shoulder while traveling through the drill pipe, and to limit an initial magnitude of deceleration of the downhole tool string caused at the initial moment of contact of the hydraulic decelerator against the hard shoulder.

Abstract: Embodiments described herein provide a multi-diameter thrust device that includes one or more thrust cups. Each thrust cup of the one or more thrust cups includes a first axial end hub disposed at a first axial end of the thrust cup; a second axial end hub disposed at a second axial end of the thrust cup; and a plurality of bowsprings. Each bowspring of the plurality of bowsprings includes a first axial end portion coupled to the first axial end hub and a second axial end portion coupled to the second axial end hub. The plurality of bowsprings are disposed circumferentially about a central axis of the multi-diameter thrust device.

Abstract: Embodiments described herein provide a multi-diameter thrust device that includes one or more thrust cups. Each thrust cup of the one or more thrust cups includes a first axial end hub disposed at a first axial end of the thrust cup; a second axial end hub disposed at a second axial end of the thrust cup; and a plurality of bowsprings. Each bowspring of the plurality of bowsprings includes a first axial end portion coupled to the first axial end hub and a second axial end portion coupled to the second axial end hub. The plurality of bowsprings are disposed circumferentially about a central axis of the multi-diameter thrust device.

Abstract: A method of obtain formation evaluation data that includes deploying an evaluation tool string into a drill string located in a wellbore. The method can also include landing the evaluation tool string in a portion of the drill string that is configured to optimize formation evaluation using the evaluation tool located therein.

Abstract: An apparatus can have a seal module located at an upper portion thereof. The apparatus can also have a mud line formed through the upper portion of the apparatus and a mud outlet in fluid communication with the mud line. The apparatus can also include a mud pulser adjacent the mud outlet, wherein the mud pulser is configured to be actuated to open, partially close, and close the mud outlet.

Abstract: Embodiments described herein provide systems and methods for minimizing deceleration of downhole tools when the downhole tools are pumped down into wellbores through drill pipe in an untethered manner. For example, embodiments described herein include a hydraulic downhole tool deceleration system that includes a hydraulic decelerator configured to be affixed to a downhole tool string pumped down through drill pipe during operation. The hydraulic decelerator is configured to contact a hard shoulder while traveling through the drill pipe, and to limit an initial magnitude of deceleration of the downhole tool string caused at the initial moment of contact of the hydraulic decelerator against the hard shoulder.

Abstract: Embodiments described herein provide a multi-diameter thrust device that includes one or more thrust cups. Each thrust cup of the one or more thrust cups includes a first axial end hub disposed at a first axial end of the thrust cup; a second axial end hub disposed at a second axial end of the thrust cup; and a plurality of bowsprings. Each bowspring of the plurality of bowsprings includes a first axial end portion coupled to the first axial end hub and a second axial end portion coupled to the second axial end hub. The plurality of bowsprings are disposed circumferentially about a central axis of the multi-diameter thrust device.

Abstract: A downhole borehole imaging tool and methods for determining a borehole size includes a magnetoresistive system and a hub moveably coupled to a fixed tool string. The hub includes a magnet. The magnetoresistive system includes magnetoresistive sensors disposed within the fixed tool string and segregated from the magnet. During operation, a routine scan of all sensors measures, for example, the output voltage V, angle ? of magnetic field, and temperature. Measurements from each sensor may then be characterized to account for temperature and input voltages variation of the sensors. The most accurate measurement can be used to derive the position of the hub 44 using the previous baseline parameters stored in the tool.

Abstract: An imaging tool that includes an array of pads. The array of pads are in communication with a hot terminal of a single phase electrical alternating current power source in communication with the array of pads. The single phase electrical alternating current power source includes two return electrodes. One of the return electrodes is located above the array of pads, and the other return terminal is located below the array of pads.

Abstract: A wellbore wall contact measuring instrument includes an instrument housing configured to move along an interior of a wellbore. A wall contact sensor arm is connected to the housing through a first biasing device to urge the wall contact sensor arm outwardly from the instrument housing. A second biasing device is coupled between the instrument housing and the sensor arm. A wall contact well logging sensor is disposed at an end of the wall contact sensor arm.

Abstract: A wellbore wall contact measuring instrument includes an instrument housing configured to move along an interior of a wellbore. A wall contact sensor arm is connected to the housing through a first biasing device to urge the wall contact sensor arm outwardly from the instrument housing. A second biasing device is coupled between the instrument housing and the sensor arm. A wall contact well logging sensor is disposed at an end of the wall contact sensor arm.

Abstract: A downhole tool includes a logging tool. The logging tool includes a spring integral with a sensor. The spring applies the sensor to a formation wall. Additionally, the spring includes a groove formed along a neutral axis thereof. In addition, a wire is located within the groove and is operatively connected with the sensor and at least one other component of the logging tool.

Abstract: A method for determining a depth related parameter of an instrument in a wellbore includes measuring movement of the instrument along the wellbore using a wheel sensor urged into contact with a wall of the wellbore. Movement of an instrument conveyance is measured proximate the surface. Measurements from the wheel sensor are calibrated using measurements of movement of the instrument conveyance. The depth related parameter of the instrument is determined using the calibrated wheel sensor measurements.

Abstract: An imaging tool that includes an array of pads. The array of pads are in communication with a hot terminal of a single phase electrical alternating current power source in communication with the array of pads. The single phase electrical alternating current power source includes two return electrodes. One of the return electrodes is located above the array of pads, and the other return terminal is located below the array of pads.

Abstract: A downhole tool includes a logging tool. The logging tool includes a spring integral with a sensor. The spring applies the sensor to a formation wall. Additionally, the spring includes a groove formed along a neutral axis thereof. In addition, a wire is located within the groove and is operatively connected with the sensor and at least one other component of the logging tool.

Abstract: A downhole tool includes a position system. The position system includes a hub moveably coupled to a fixed tool string. The hub includes a sensor component. The position system also includes a position sensor disposed within the fixed tool string and segregated from the sensor component. Additionally, the sensor component is at a first pressure and the position sensor is at a second pressure, different than the first pressure.