Abstract: A status of an isolation barrier can be determined by comparing data collected by a sensor below the isolation barrier to data collected by a sensor above the isolation barrier. A sensor assembly can be coupled to an isolation barrier assembly downhole from the isolation barrier assembly for collecting data related to a characteristic of the wellbore. The sensor assembly can transmit the data collected to a tool positioned up-hole from the isolation barrier. The tool can transmit the data to a surface of the wellbore. The sensor assembly can be powered by a battery pack or via a connection to a downhole tool that supplies the power to the sensor assembly. The downhole tool that receives the data from the sensor assembly (and optionally provides power to the sensor assembly) can be inserted and removed from the wellbore over the lifetime of the well.

Abstract: Techniques for plugging at least one zone of a hydrocarbon well are disclosed herein. The techniques include methods for deploying a wellbore dart configured for plugging the at least one zone of the hydrocarbon well, receiving, by a first node, location information indicating a first location of the wellbore dart, receiving, by a second node, location information indicating a second location of the wellbore dart, and detecting, an arrival of the wellbore dart at an intended location for the dart to plug the zone of the hydrocarbon well. In some aspects, the method further includes sending a command to a firing module of the wellbore dart, the command effective to cause the wellbore dart to plug the zone of the hydrocarbon well. Systems and computer-readable media are also provided.

Abstract: A wellbore assembly for use downhole in a wellbore may include a casing string comprising a mandrel. The mandrel may include a side pocket in an inner region of the mandrel. A downhole device may be positioned within the side pocket of the mandrel. The downhole device may include an electronics package, a power source, and a transmitter for transmitting data from the downhole device via a wireless communications link to a downhole tool for transmitting the data to a surface of the wellbore for monitoring a downhole environment of the wellbore.

Abstract: Techniques for plugging at least one zone of a hydrocarbon well are disclosed herein. The techniques include methods for deploying a wellbore dart configured for plugging the at least one zone of the hydrocarbon well, receiving, by a first node, location information indicating a first location of the wellbore dart, receiving, by a second node, location information indicating a second location of the wellbore dart, and detecting, an arrival of the wellbore dart at an intended location for the dart to plug the zone of the hydrocarbon well. In some aspects, the method further includes sending a command to a firing module of the wellbore dart, the command effective to cause the wellbore dart to plug the zone of the hydrocarbon well. Systems and computer-readable media are also provided.

Abstract: A status of an isolation barrier can be determined by comparing data collected by a sensor below the isolation barrier to data collected by a sensor above the isolation barrier. A sensor assembly can be coupled to an isolation barrier assembly downhole from the isolation barrier assembly for collecting data related to a characteristic of the wellbore. The sensor assembly can transmit the data collected to a tool positioned up-hole from the isolation barrier. The tool can transmit the data to a surface of the wellbore. The sensor assembly can be powered by a battery pack or via a connection to a downhole tool that supplies the power to the sensor assembly. The downhole tool that receives the data from the sensor assembly (and optionally provides power to the sensor assembly) can be inserted and removed from the wellbore over the lifetime of the well.

Abstract: This disclosure relates generally to pulling tools and, more particularly, to incorporating a bailer feature in pulling tools. A pulling tool may be provided that includes a housing. The pulling tool may further include a tool engagement assembly securing in the housing with a distal end of the tool engagement assembly extending from the housing for engagement with a well tool. The pulling tool may further include a bailer chamber formed in the tool engagement assembly and in fluid communication with an exterior of the pulling tool through an opening in the distal end of the tool engagement assembly. The pulling tool may further include a valve positioned in the opening of the tool engagement assembly.

Abstract: A wellbore assembly for use downhole in a wellbore may include a casing string comprising a mandrel. The mandrel may include a side pocket in an inner region of the mandrel. A downhole device may be positioned within the side pocket of the mandrel. The downhole device may include an electronics package, a power source, and a transmitter for transmitting data from the downhole device via a wireless communications link to a downhole tool for transmitting the data to a surface of the wellbore for monitoring a downhole environment of the wellbore.

Abstract: Downhole wire routing apparatus including a tubular body having an outer circumferential surface and a central bore extending along a longitudinal axis. The tubular body includes one or more channels, capable of receiving one or more wires, disposed within the tubular body between the central bore and outer circumferential surface. Method and system for routing wires to one or more downhole tools.

Abstract: This disclosure relates generally to pulling tools and, more particularly, to incorporating a bailer feature in pulling tools. A pulling tool may be provided that includes a housing. The pulling tool may further include a tool engagement assembly securing in the housing with a distal end of the tool engagement assembly extending from the housing for engagement with a well tool. The pulling tool may further include a bailer chamber formed in the tool engagement assembly and in fluid communication with an exterior of the pulling tool through an opening in the distal end of the tool engagement assembly. The pulling tool may further include a valve positioned in the opening of the tool engagement assembly.

Abstract: A downhole cleanout tool includes a tool housing have a fluid inlet and a fluid outlet, and a filter between the inlet and the outlet. The tool includes a pump that is fluidly coupled to at least the fluid inlet to motivate fluid across the filter. The tool also includes a rotatable housing having a nozzle that is fluidly coupled to the pump outlet. The rotatable housing may rotate about a longitudinal axis of the rotatable housing, and the filter and pump may be disposed within the rotatable housing. Each nozzle may include a nozzle outlet oriented at an angle (a) from a radial axis extending from the longitudinal axis of the rotatable housing to a location where the nozzle outlet intersects the periphery of the rotatable housing such that motivation of fluid through the nozzle results in rotation of the rotatable housing.

Abstract: A modular, mechanical percussive hammer assembly may be used with drill strings, wireline cable, and coiled tubing. Rotation of a splined driveshaft by downhole electric, hydraulic or mud motor rotates a downwardly-biased hammer and drill body rotatively captured within a upwardly-biased stationary anvil. A bit is carried by the drill body. The hammer contacts and rotates along a cammed control surface of the anvil as the driveshaft is rotated. Interaction between the cammed control surface and the hammer operated to create an axial impact force that is transmitted to the drill body and drill bit.

Abstract: A downhole tool includes a tool body and a first anchoring device integrated with the tool body. The first anchoring device includes at least two linear actuators within and non-perpendicular to the tool body, each of the at least two linear actuators configured to move a corresponding contact pad between a retracted position and an anchor position. The first anchoring device also includes at least one guide component coupled to each contact pad to restrict movement of a corresponding contact pad to a predetermined path.

Abstract: A cable grab assembly includes a body having a longitudinally extending internal cavity disposed therein. A piston is disposed in the cavity and is axially moveable between a first position and a second position. At least two grab arms are hingedly attached to a bottom end of the body. A linkage assembly operatively couples the piston and the at least two grab arms such that movement of the piston between the first position toward the second position causes the at least two grab arms to pivot inward from an open position toward a closed position. A shear-pin restrains the piston to the first position. At least one spring element is disposed between the piston and an end of the cavity to shift the piston from the first position toward the second position to capture a broken cable when the shear-pin is sheared.

Abstract: The disclosure provides a downhole anchoring apparatus for use in a downhole tool. An example downhole anchoring apparatus may include a housing with a hub provided within the housing. The hub may be arranged to rotate in a bidirectional fashion about a longitudinal axis. The downhole anchoring apparatus may also include a deployment linkage. The deployment linkage may be coupled to the hub by a hinge so that when the hub is rotated in a first direction, a distal end of the deployment linkage is extended radially outward from the central axis, and when the hub is rotated in a second direction, the distal end of the deployment linkage is retracted toward the central axis.

Abstract: A process for manufacturing a perforation gun casing includes providing a perforation gun housing that has a wall of nominal thickness and at least one scallop. Each scallop is a portion of the wall having a reduced thickness relative to the nominal wall thickness. The process also includes applying a selective annealing process to the perforation gun casing. The selective annealing process affects the material properties of the scallop but generally does not substantially affect the material properties of the portions of the wall having a nominal thickness.

Abstract: Downhole wire routing apparatus including a tubular body having an outer circumferential surface and a central bore extending along a longitudinal axis. The tubular body includes one or more channels, capable of receiving one or more wires, disposed within the tubular body between the central bore and outer circumferential surface. Method and system for routing wires to one or more downhole tools.

Abstract: In accordance with some embodiments of the present disclosure, a low stress rope socket for a downhole tool is disclosed. The rope socket includes a core, a groove cut in a helix shape on the core, and a rope wrapped around the core and inserted in the groove. The slickline attachment affixed to an uphole end of the core to attach the rope to the core. Additionally, the rope socket includes a housing surrounding the rope and the core. The housing secures the rope to the groove. The rope socket further includes a transition affixed to a downhole end of the core. The transition aligns the rope with an axis of symmetry of the socket. A portion of the rope downhole from the rope socket carries no load.

Abstract: A downhole cleanout tool includes a tool housing have a fluid inlet and a fluid outlet, and a filter between the inlet and the outlet. The tool includes a pump that is fluidly coupled to at least the fluid inlet to motivate fluid across the filter. The tool also includes a rotatable housing having a nozzle that is fluidly coupled to the pump outlet. The rotatable housing may rotate about a longitudinal axis of the rotatable housing, and the filter and pump may be disposed within the rotatable housing. Each nozzle may include a nozzle outlet oriented at an angle (?) from a radial axis extending from the longitudinal axis of the rotatable housing to a location where the nozzle outlet intersects the periphery of the rotatable housing such that motivation of fluid through the nozzle results in rotation of the rotatable housing.

Abstract: A downhole tool anchor is disclosed. In one implementation, a downhole anchor tool may include a housing, an axial drive in the housing, a rack connected to the axial drive, a pinion in the housing, the pinion having teeth that engage teeth on the rack, a gear tube within the pinion, the gear tube having internal threads, a slip rod having external threads that engage the internal threads within the gear tube, and a radial bearing coupled to the gear tube, the radial bearing having a slip rod alignment member that prevents the slip rod from free spinning in the gear tube.

Abstract: A modular, mechanical percussive hammer assembly may be used with drill strings, wireline cable, and coiled tubing. Rotation of a splined driveshaft by downhole electric, hydraulic or mud motor rotates a downwardly-biased hammer and drill body rotatively captured within a upwardly-biased stationary anvil. A bit is carried by the drill body. The hammer contacts and rotates along a cammed control surface of the anvil as the driveshaft is rotated. Interaction between the cammed control surface and the hammer operated to create an axial impact force that is transmitted to the drill body and drill bit.