Abstract: A plug retrieval tool includes a mandrel lowerable into a wellbore. A retrieval head is coupled to the mandrel for selectively latching onto a plug. A shroud is telescopically coupled to the mandrel about the retrieval head and moveable repeatedly between an extended position below the retrieval head for displacing debris on the plug and a retracted position for moving the retrieval head closer to the plug to latch onto the plug. A resistance mechanism provides a resistance to moving the shroud each time the shroud is moved toward the retracted position.

Abstract: Provided, in one aspect, is a downhole magnetic debris removal apparatus. The downhole magnetic debris removal apparatus, in one aspect, includes a housing having a longitudinal axis, and a plurality of magnets arranged as one or more Halbach arrays of magnets coupled to the housing, the one or more Halbach arrays of magnets having a strong side and a weak side.

Abstract: A plug retrieval tool includes a mandrel lowerable into a wellbore. A retrieval head is coupled to the mandrel for selectively latching onto a plug. A shroud is telescopically coupled to the mandrel about the retrieval head and moveable repeatedly between an extended position below the retrieval head for displacing debris on the plug and a retracted position for moving the retrieval head closer to the plug to latch onto the plug.

Abstract: This disclosure relates to navigation of an underground mining machine. A laser range finder captures first and second 3D point clouds of first and second overlapping parts of the underground mine from first and second positions of the mining machine respectively. A processor determines a first set of candidates for rock bolts as point feature objects from the first 3D point cloud; determines a second set of candidates for rock bolts as point feature objects from the second 3D point cloud; determines an alignment between first shapes defined by at least two of the first set of candidates for rock bolts and second shapes defined by at least two of the second set of candidates for rock bolts; and determines relative location information between the first position of the mining machine and the second position of the mining machine based on the alignment.

Abstract: A setting module for setting a packer assembly in a wellbore can include a motor, a sensor, and an electronic control device. The sensor can detect pressure of fluid from a surface of the wellbore in an inner diameter of the setting module and output detected pressure to an electronic control device. The electronic control device can detect a triggering pressure sequence of the fluid from the surface and can, in response to detecting the triggered pressure sequence, output a command to the motor to drive a pump to cause a slip to move for setting the packer assembly.

Abstract: A variety of systems and methods are disclosed for cleaning a wellbore ahead of a well tool. The well tool is deployed on a tubular conveyance to a depth into a well. An interior surface of the well is wiped ahead of the well tool to dislodge debris from the interior surface of the well as the tubular conveyance advances downhole. The debris is filtered ahead of the well tool as the tubular conveyance advances downhole to keep the filtered debris away from the well tool. The well tool may then be used to perform a tool function when the tubular conveyance has reached the depth, without being affected by the filtered debris.

Abstract: A setting module for setting a packer assembly in a wellbore can include a motor, a sensor, and an electronic control device. The sensor can detect pressure of fluid from a surface of the wellbore in an inner diameter of the setting module and output detected pressure to an electronic control device. The electronic control device can detect a triggering pressure sequence of the fluid from the surface and can, in response to detecting the triggered pressure sequence, output a command to the motor to drive a pump to cause a slip to move for setting the packer assembly.

Abstract: A modular unit for constructing a barrier, where the modular unit can fully or partially be manufactured in a factory for transport to the location of the barrier, with the modular units having a base and at least a pair of wall panels installed on the base. The modular units are assembled into the barrier by placing the modular units side-by-side along a line or curve on a mounting surface. The modular units are designed with features to prevent climbing or scaling over the barrier and support electronic and power equipment to protect and monitor the protected location.

Abstract: A downhole tool for cleaning debris from an inner surface of a downhole casing that includes an inner mandrel moveable within the casing; and a scraper mandrel movably coupled to the outside of the inner mandrel by the engagement of a lug within a groove, the scraper mandrel including a scraper blade positioned on an outside of the scraper mandrel. Longitudinal movement of the scraper mandrel relative to the inner mandrel causes the lug to move within the groove, causing the scraper mandrel and the scraper blade to rotate relative to the inner mandrel and clean debris from the inner surface of the casing. The longitudinal movement is achieved by restraining movement of the scraper mandrel relative to the inner mandrel by contacting the debris with a scraper blade on the outside of the scraper mandrel, causing the scraper mandrel to move longitudinally relative to the inner mandrel.

Abstract: A downhole tool for cleaning debris from an inner surface of a downhole casing that includes an inner mandrel moveable within the casing; and a scraper mandrel movably coupled to the outside of the inner mandrel by the engagement of a lug within a groove, the scraper mandrel including a scraper blade positioned on an outside of the scraper mandrel. Longitudinal movement of the scraper mandrel relative to the inner mandrel causes the lug to move within the groove, causing the scraper mandrel and the scraper blade to rotate relative to the inner mandrel and clean debris from the inner surface of the casing. The longitudinal movement is achieved by restraining movement of the scraper mandrel relative to the inner mandrel by contacting the debris with a scraper blade on the outside of the scraper mandrel, causing the scraper mandrel to move longitudinally relative to the inner mandrel.

Abstract: A downhole tool for cleaning a wellbore includes a tool body having a passage therein. A liquid is to flow through the passage of the tool body and have an intermittent flow pattern. An inner sleeve positioned within the tool body includes a recess having a recess pattern. In response to the intermittent flow pattern of the flow of fluid, a shift pin positioned in the recess of the inner sleeve is to traverse through the recess pattern. The downhole tool includes at least one scraper blade. The scraper blade is movable between a retracted position and a radially expanded position. In response to the shift pin traversing the recess pattern of the recess, the scraper blade can be expanded radially outward toward a wall of the wellbore from the retracted position to the expanded position and/or retracted inward away from the wall of the wellbore from the expanded position to the retracted position.

Abstract: Described herein is a device (1) for measuring parameters of a material (3) flowing along a passage (5), the passage having two longitudinally spaced apart ends and transverse sides defined by one or more sidewalls (7, 9). The device (1) includes a laser source (15) positioned at a first location within or adjacent a side of the passage (5) and configured to generate a laser beam (17) at one or more predetermined frequencies. A beam projection element (21, 27) projects the laser beam (17) transversely across the passage (5) to irradiate the material (3) within a measuring zone (19). The measuring zone (19) includes a transverse region extending greater than 50% of the width of the passage (5). An optical imaging device (29) is positioned at a second location within or adjacent the passage (5) and configured to capture images of backscattered light from material (3) within the measuring zone (19).

Abstract: Disclosed herein is a system for controlling a mining machine within an underground mine. A rotatable laser source sends laser light and return light sensor receives reflected laser light and provides an indication of distance and return light intensity at multiple different rotation angles. A co-ordinate reference point comprises a pattern of varying reflectivity and provides at least a 2D co-ordinate position. A processor determines an absolute co-ordinate position in space of the mining machine as the mining machine moves through the underground mine. The processor collects intensity values of reflected laser light for multiple respective rotation angles and detects the pattern of the reference point in the multiple intensity values of reflected laser light, and determines the absolute co-ordinate position in space of the mining machine based on spatial information of the detected pattern.

Abstract: A variety of systems and methods are disclosed for cleaning a wellbore ahead of a well tool. The well tool is deployed on a tubular conveyance to a depth into a well. An interior surface of the well is wiped ahead of the well tool to dislodge debris from the interior surface of the well as the tubular conveyance advances downhole. The debris is filtered ahead of the well tool as the tubular conveyance advances downhole to keep the filtered debris away from the well tool. The well tool may then be used to perform a tool function when the tubular conveyance has reached the depth, without being affected by the filtered debris.

Abstract: This disclosure provides a downhole debris removal apparatus, a method for assembling a downhole debris removal apparatus, and a well system including the same. The downhole debris removal apparatus, in one aspect, includes a crossover sub, the crossover sub having a first sub end with one of a sub pin thread or sub box thread, a second sub end with the other of the sub box thread or sub pin thread, and a fluid passageway extending from the first sub end to the second sub end. The downhole debris removal apparatus, according to this aspect, further includes a debris removal tube having a first tube end and a second tube end, the first tube end removably engaged with the crossover sub between the first sub end and the second end.

Abstract: This disclosure provides a downhole debris removal apparatus, a method for assembling a downhole debris removal apparatus, and a well system including the same. The downhole debris removal apparatus, in one aspect, includes a crossover sub, the crossover sub having a first sub end with one of a sub pin thread or sub box thread, a second sub end with the other of the sub box thread or sub pin thread, and a fluid passageway extending from the first sub end to the second sub end. The downhole debris removal apparatus, according to this aspect, further includes a debris removal tube having a first tube end and a second tube end, the first tube end removably engaged with the crossover sub between the first sub end and the second end.

Abstract: This disclosure provides a downhole debris removal apparatus, a method for operating a downhole debris removal apparatus, and a well system including the same. The downhole debris removal apparatus, in one aspect, includes an inner pipe positioned within a tubular, and a filtration member substantially encircling the inner pipe. The downhole debris removal apparatus, in this aspect, further includes a cleaning assembly positioned radially about at least a portion of the filtration member, the cleaning assembly configured to move relative to the filtration member to dislodge particulate matter from the filtration member.

Abstract: Viewers of a video stream may generate video clips including different portions of the video stream. Popularity measures may be computed for the video clips, for example based on tracked actions associated with the video clips, such as frequency of playing and sharing of the video clips. The popularity measures may be used to select and provide video clips to viewers. Video items may be generated by streamers, such as may include selected portions of video of streamers playing a game. A video item generated by a particular streamer may be displayed to viewers only during times when that particular streamer is participating in an active game session. Viewers of the video item may provide input that allows viewers to receive a live stream of the streamer's active game session that it is being played simultaneously with the display of the video item.

Abstract: This disclosure relates to an underground mining vehicle comprising a three-axis MEMS gyroscope rotatable about a rotation axis and a gyroscope interface that calculates a first rotation rate bias with respect to a first axis different to the rotation axis, a second rotation rate bias with respect to a second axis different to the first axis and different to the rotation axis, a rotation rate about the rotation axis based on the Earth rotation rate vector by correcting the rotational measurement data using the first rotation rate bias and the second rotation rate bias and a third rotation rate bias with respect to the rotation axis based on the calculated rotation rate about the rotation axis. A navigation unit receives the first rotation rate bias, the second rotation rate bias and the third rotation rate bias and calculates a pose of the vehicle.

Abstract: Provided, in one aspect, is a downhole magnetic debris removal apparatus. The downhole magnetic debris removal apparatus, in one aspect, includes a housing having a longitudinal axis, and a plurality of magnets arranged as one or more Halbach arrays of magnets coupled to the housing, the one or more Halbach arrays of magnets having a strong side and a weak side.