Abstract: The invention relates to a drilling device for earth or rock drilling having a mast, a drill drive with a drill drive shaft for driving a drill rod in a rotating manner, a drill drive carriage, which is supported in a movable manner along the mast and on which the drill drive is arranged, and an oscillation drive, which is designed for generating an oscillation, arranged behind the drill drive in a drilling direction and connected to the drill rod for transmitting an oscillation, wherein a rear connecting end of the drill drive shaft of the drill drive or the drill rod projects rearwards from the drill drive. According to the invention provision is made in that on the connecting end a rotary coupling with a first coupling piece, which is connected in an axially fixed and torque-proof manner to the connecting end of the drill drive shaft, and a second coupling piece, which is axially fixed and rotatable relative to the first coupling piece, is provided.

Abstract: A downhole tool includes a cone with an outer surface, a cone axis, and a set on the outer surface thereof. The set includes first and second cutting elements. The first and second cutting elements have respective first and second grips that are different. Another downhole tool includes a body and a cone is connected to, and rotatable relative to, the body. Cutting elements on the cone are arranged in a set to vary in radial position relative to a cone axis, with a first position nearest to, and a last position farthest from, the cone axis. A first cutting element in the first position has a different cutting element geometry type than a second cutting element in the last position. First and second cutting elements may have the same cutting element geometry type and one or more cutting elements therebetween may have different cutting element geometry types.

Abstract: A rolling element assembly includes a rolling element rotatable about a rotational axis when positioned within a cavity defined on a bit body of a drill bit, and a compliant retainer positioned within a retainer slot defined in the bit body. A biasing device is positioned within a device pocket defined within the bit body to bias the compliant retainer against the outer circumferential surface of the rolling element. The compliant retainer secures the rolling element within the cavity while an arcuate portion of the rolling element protrudes from the cavity and exposes a full axial width of the rolling element.

Abstract: The invention relates to a rock-cutting tool and a method for manufacturing this tool, which comprises knives comprising a layer of polycrystalline synthetic diamond (PSD), a diamond impregnation layer with diamond particles and bonding cobalt, characterized in that the PSD layer is supported directly, along a planar interface, on the diamond impregnation layer whose interface surface is planar by machining and with which the diamond particles are flush.

Abstract: A flexible coupling for coupling sections of a downhole tubing string is provided. The flexible coupling has a central section with first and second ends, each end having a contact surface and a first part of a pivoting connector, the contact surface extending radially outward relative to the first part of the pivoting connector. The flexible coupling also has first and second coupling sections pivotally coupled to the first and second ends of the central section. Each of the first and second coupling sections have a tubing string attachment at a first end, a second part of the pivoting connector at a second end, and a contact surface at the second end, the contact surface extending radially outward relative to the second part of the pivoting connector. Pivotal movement of the first and second coupling sections relative to the central section is limited by engagement between the contact surfaces.

Abstract: A grip element for gripping a tubular CRA workpiece has a hardened grip surface carrying an array of generally pyramidic die teeth, which may have either pointed or rounded tips, with the configuration of the tooth tips being selected for effective gripping of the CRA workpiece by means of an interference grip, and without unacceptable marking the CRA workpiece. The die tooth density over the grip surface may be selected to minimize accumulation of contaminants between teeth and/or to facilitate removal of accumulated contaminants. The substrate of the grip element may comprise a stainless steel having no free iron, with the grip surface being hardened by nitriding. Optionally, the tips of the grip element may truncated after nitriding to partially expose the stainless steel substrate. In alternative embodiments, the grip element may have a carbon steel substrate with a nitrided grip surface.

Abstract: A water transfer system utilizing uniform portable, self-contained equipment packages for cost-effective remote monitoring and control of temporary water transfer installations. The equipment packages contain a collection of sensors for determining water transfer parameters including flowrate, pressure, temperature, and storage tank levels. Data from the equipment packages is communicated by a local controller to a remote data service providing system performance, alarm notification, and operation reports via PC or portable communication devices. The combination of these functions reduces the amount of onsite supervision needed for reliable temporary water transfer.

Abstract: A water transfer system utilizing uniform portable, self-contained equipment packages for cost-effective remote monitoring and control of temporary water transfer installations. The equipment packages contain a collection of sensors for determining water transfer parameters including flowrate, pressure, temperature, and storage tank levels. Data from the equipment packages is communicated by a local controller to a remote data service providing system performance, alarm notification, and operation reports via PC or portable communication devices. The combination of these functions reduces the amount of onsite supervision needed for reliable temporary water transfer.

Abstract: In accordance to one or more aspects of the disclosure an indexing track for controlling a dual valve assembly includes a plurality of interconnected pressure-up and pressure-down slots that define sequence paths to translate the pin and to actuate the dual valve assembly to a first position when the pin is in a first track position, to a second position when the pin is in a mid-track position, and a third position when the pin is in a third track position.

Abstract: A gripper mechanism for a downhole tool is disclosed that includes an eccentric linkage mechanism. In operation, an axial force generated by a power section of the gripper expands the linkage mechanism, which applies a radial force to the interior surface of a wellbore or passage. A sliding portion allows the gripper to slide along a surface of the formation in response to the radial force applied to the interior surface of the wellbore or passage.

Abstract: To perform an aligned operation downhole, a tubular disposed downhole has an internal bore with a first inner circumference and has a target at a first radial orientation. A locator profile is defined about the internal bore at a first location, and an internal nipple is defined about the internal bore at a second location. The internal nipple has a second inner circumference less than the first of the internal bore. An orientation slot is defined longitudinally across the internal nipple and is disposed at a second radial orientation configured relative to the first radial orientation of the target. A tool is deployable into the internal bore. The tool has a locator to engage in the locator profile and has an orientation key to engage in the slot and align an operational component for the aligned operation with the target.

Abstract: A downhole assembly is disclosed. The downhole assembly includes a tube disposed in a wellbore, and a shroud coupled to and disposed around the circumference of the tube to form an annulus between an inner surface of the shroud and an outer surface of the tube. The downhole assembly further includes a flow control device disposed in the annulus, and a degradable plug disposed in the annulus and positioned to prevent fluid flow between the annulus and the tube.

Abstract: A connector (12) such as a multi-coupler stabplate for coupling to or decoupling from another connector (14). The connector may have a secondary release mechanism (80) that allows a seized drive to be rotated to an unlocked position independent of the connector housing moving relative to a multi-coupler plate. Integrated stop features may be provided during such secondary release. The secondary release mechanism may be mounted to the housing (56) and retained with shear pins. Orientation pin(s) (62) may be provided that cooperate with a guide slot(s) (64) for oblique and axial movement of a locking mechanism (46) during coupling/decoupling. A housing shroud (76) may be provided for cooperating with the orientation pin(s) and indicating locked/unlocked states. A stop collar (70) and push-off flange (74) may be provided for facilitating coupling/decoupling. Guide bushings (44) may be provided for facilitating alignment during coupling.

Abstract: Example apparatuses and methods are described for providing a swell packer apparatus having a vulcanized non-swelling outer layer with a pattern cut into it to expose an inner swellable sealing element. In an example embodiment, the swell packer includes a mandrel having a substantially cylindrical outer surface. A sealing element extends radially around the mandrel and a non-swelling layer circumferentially covers an outer surface of the sealing element. One or more grooves are cut in the non-swelling layer to expose a portion of the outer surface of the sealing element. The non-swelling layer is configured to prevent fluid communication between a swelling fluid disposed outside of the non-swelling layer and portions of the outer surface of the sealing element covered by the non-swelling layer.

Abstract: A one-way energy retaining device including a body, at least a portion of which comprises a degradable material; a protrusion extending radially from the body that allows movement of the device along a separate structure in a first direction and prevents movement along the separate structure in the opposite direction.

Abstract: A backup ring assembly has a plurality of radially offset ring members including an outermost ring member formed from plurality of axially extending segments. Each of the plurality of axially extending segments includes an outer surface. A first interlock member support is coupled to the outer surface of one of the plurality of axially extending segments of the outer most ring member. A second interlock member support is coupled to the outer surface of an another one of the plurality of axially extending segments of the outermost ring member. An interlock member includes a first end supported at the first interlock member support and a second end supported at the second interlock member support. The interlock member restrains radially outward expansion of the ring and circumferential expansion of a gap extending between the one of the axially extending segments and the another one of the axially extending segments.

Abstract: Methods and systems for isolating a loss circulation zone of a subterranean formation includes lowering a drill string having a tubular member from a surface into a subterranean well and securing a packer assembly to the tubular member, the packer assembly having an inflatable packer unit and a protective sleeve. The protective sleeve is in an extended position and circumscribes the inflatable packer unit and the inflatable packer unit is in a deflated condition. A stabilizer body is secured to the tubular member downhole of the packer assembly. The stabilizer body is shaped to centralize the packer assembly and direct debris traveling uphole in a direction radially outward of the packer assembly. The protective sleeve is moved from the extended position to a retracted position. The inflatable packer unit is inflated to an inflated condition, forming a seal with an inner diameter surface of the subterranean uphole of the loss circulation zone.

Abstract: A cable-type bridge plug setting and sealing tool, including a series of sequentially connected components provided in the following order: an upper connector, a driver, a control valve, a hydraulic actuator, and a piston adapter. When the control valve is in a first state, the driver sends, according to a first direction, a hydraulic fluid to the hydraulic actuator, thereby causing the hydraulic actuator to actuate a downward extension of the piston adapter. When the control valve is in a second state, the driver sends, according to a second direction, a hydraulic fluid to the hydraulic actuator, thereby causing the hydraulic actuator to actuate an upward retraction of the piston adapter. The cable-type bridge plug setting and sealing tool uses hydraulic control to achieve setting and sealing of a bridge plug, greatly reducing an operational risk coefficient and ensuring a degree of operational safety.

Abstract: A downhole tool configured to pass through a narrowed diameter, the downhole tool having a mandrel made of a composite material. The tool has a fingered member disposed around the mandrel, a fingered bearing plate disposed around the mandrel, and also a fingered lower sleeve disposed around and coupled to the mandrel. The tool further includes a first slip and a second slip.

Abstract: An example method of forming a well includes identifying a lost circulation zone in a wellbore, where the lost circulation zone includes a fracture in a formation adjacent to the wellbore; arranging an inflatable in a vicinity of the lost circulation zone; forcing slurry into the inflatable to cause at least part of the inflatable containing the slurry to expand into the fracture; allowing the slurry to set for a period of time to produce a solid; and drilling through the solid in the inflatable in the wellbore, leaving the solid in the fracture.

Abstract: Composite plug drill out. At least some example embodiments are methods including: drilling out a first composite plug which creates plug parts and opens a first segment having a first set of perforations through the casing; pumping diverter agent into the first segment to fluidly isolate a formation surrounding the wellbore; forcing plug parts and sand from the first segment to the surface; drilling out a second composite plug which creates plug parts and opens the second segment having a second set of perforations through the casing; pumping diverter agent into the second segment to fluidly isolate the second set of perforations against flow into the formation; and forcing plug parts and sand from the second segment to the surface.

Abstract: A method for remediating a microannulus in a cased wellbore may include conveying a downhole tool into the cased wellbore to a location of interest. The location of interest may include one or more perforations in a casing and a microannulus. The downhole tool may include a heat generation device. The method may also include activating the heat generation device to melt a fill material at the location of interest such that the fill material flows through the perforations into one or more voids, including the microannulus, in or around cement disposed between the casing and the cased wellbore. Additionally, the method may include deactivating the heat generation device to facilitate solidification of the fill material in the one or more voids and sealing of the microannulus.

Abstract: A portion of a wellbore is drilled in a subterranean formation, using a drilling string (140) disposed within a casing string (130) and extending through a cement retainer (150) disposed within the casing string. The drilling string can be retracted into the casing string to a location fully above the cement retainer, and subsequently the casing string can be cemented in the wellbore whereby maintaining the drilling string inside the casing in the wellbore.

Abstract: An improved autonomous well valve has a body that constitutes an actuator for opening and closing of first and second valves. The body has a body axis of symmetry. The body, which in operation is submerged, has an effective density that is equal or greater than the density of a first fluid and less than the density of a second fluid. The body is placed in a housing, the housing having a housing axis of symmetry. At least two first valves are designed to allow flow between the inside and outside of the housing, are distributed about the body axis and mechanically connected between the body and the housing. The body axis at the first valves is restricted from moving above the housing axis.

Abstract: A completion section includes a base pipe defining a central flow passage, an injection port, and a production port. A fracturing assembly includes a frac sleeve positioned within the central flow passage adjacent the injection port, a sensor that detects a wireless signal, a first frac actuator actuatable in response to the wireless signal to move the frac sleeve and expose the injection port, and a second frac actuator actuatable based on the wireless signal to move the frac sleeve to occlude the injection port. A production assembly is axially offset from the fracturing assembly and includes a production sleeve positioned within the central flow passage adjacent the production port, a filtration device arranged about the base pipe, and a production actuator actuatable based on the wireless signal or an additional wireless signal to move the production sleeve to an open position where the production ports are exposed.

Abstract: An injection method of use for treating a production fluid from a wellhead. An injection system comprising a chemical tanks, a skid assembly, a bacteria monitor, and a control panel. An actuated three-way valve selectively opens and closes to allow a portion of the production fluid into the bacteria monitor. The injection system adapted to selectively open the actuated three-way valve to receive a portion of the production fluid from the wellhead, receiving a portion of the production fluid from the wellhead, monitoring a chemical composition of the production fluid, selectively adding a mixture of chemicals from one or more chemical storage tanks into the production fluid, injecting the resulting mixture back into the wellhead, and monitoring the production fluid and modifying mixtures from the one or more chemical storage tanks and/or closing the actuated three-way valve according to a desired mixture.

Abstract: A magnetic pulse actuation arrangement configured for use in a downhole system, the arrangement including: a workpiece; a layer placed on a portion of the workpiece, the layer having a different magnetic permeability than the workpiece; and, an inductor including a coil and configured to deliver a magnetic pulse to the workpiece to urge the workpiece in a direction, the layer facing the coil.

Abstract: The disclosure is directed to a method, and system for analyzing a subterranean formation for designing an oil field service to be completed in a borehole of the subterranean formation for enhancing recovery of oil or gas from the formation. The subterranean formation may be an unconventional reservoir.

Abstract: Disclosed herein is a system comprising a casing; the casing being disposed in a borehole; a liner; the liner being disposed in the casing and being concentric with the casing; and a layer of material disposed between the liner and the casing; where the layer of material forms a first bond with the liner and a second bond with a metal alloy disposed on an inner surface of the casing thereby enabling hanging the liner from the casing; where the layer of material is an expandable metal disposed upon a tapered surface of the liner and where the layer of material contacts the metal alloy along a circumferential surface of the layer of material; where the layer of material comprises a product of an exothermic reaction package; where a product is produced by an exothermic reaction of a metal with a metal alloy.

Abstract: A method of operating a wellhead compressor includes selecting a plurality of operating points of the wellhead compressor, measuring the tubing pressure at the plurality of operating points of the wellhead compressor and determining an efficiency achieved by the wellhead compressor when operating at each of the operating points based on at least the measured tubing pressure at each of the operating points. A production curve is generated of well pressure as a function of flow rate from a combination of measured data and predicted data. An operating point of the wellhead compressor is selected from the production curve based on at least the efficiency of the wellhead compressor at the selected operating point and the wellhead compressor is operated at the selected operating point. The steps of the method are repeated after operating the wellhead compressor at the selected operating point for a predetermined period of time.

Abstract: A well pumping assembly has a stator mounted in a housing, the stator having an axially extending stator cavity. The stator has windings that when powered create an electromagnetic field into the stator cavity. A pump has a landed position within the stator cavity. The pump having a non-rotating pump portion and a rotating pump portion. Magnets mount on the rotating pump portion and impart rotation to the rotating pump portion in response to the electromagnetic field. A neck on a downstream end of the pump has a running and retrieval feature for engagement by a running and retrieving tool to retrieve the pump from and install the pump in the landed position.

Abstract: A method for extracting a natural resource may include creating a fracture network in a target formation by simultaneously pressurizing the target formation on opposing sides with hydraulic fracturing liquid through different wells creating a series of fractures from each of the different wells with effective fracture lengths that overlap with each other.

Abstract: A hydrocarbon resource recovery system is for hydrocarbon recovery in a subterranean formation. The hydrocarbon resource recovery system may include an RF antenna within the subterranean formation for hydrocarbon resource recovery, an RF source aboveground, a coaxial RF transmission line coupled between the RF antenna and the RF source and having an aboveground portion, a dielectric fluid pressure source, and pressure members joined together in end-to-end relation to define a pressure housing coupled to the dielectric fluid pressure source and surrounding the aboveground portion of the coaxial RF transmission line. The pressure members may include a straight tubular pressure member, and an elbow pressure member coupled thereto.

Abstract: A hydrocarbon resource recovery system may include an RF source, and an RF antenna assembly coupled to the RF source and within a wellbore in a subterranean formation for hydrocarbon resource recovery. The RF antenna assembly may include first and second tubular conductors, a dielectric isolator coupled between the first and second tubular conductors, an RF transmission line having an inner conductor and an outer conductor extending within the first tubular conductor, the outer conductor being coupled to the first tubular conductor, and a feed structure coupled to the second tubular conductor. The inner conductor may have a distal end being slidable within the outer conductor and cooperating with the feed structure to define a latching arrangement having a latching threshold lower than an unlatching threshold.

Abstract: A method is for hydrocarbon resource recovery. The method may include positioning an RF antenna assembly within a wellbore in a subterranean formation, the RF antenna assembly having first and second tubular conductors and a dielectric isolator defining a dipole antenna, and a dielectric coating surrounding the dielectric isolator and extending along a predetermined portion of the first and second tubular conductors. The method may include operating an RF source coupled to the RF antenna assembly during a start-up phase to desiccate water adjacent the RF antenna assembly, and operating the RF source coupled to the RF antenna assembly during a sustainment phase to recover hydrocarbons from the subterranean formation.

Abstract: A hydrocarbon resource recovery system may include an RF source, and an RF antenna assembly coupled to the RF source and within a wellbore in a subterranean formation for hydrocarbon resource recovery. The RF antenna assembly may include first and second tubular conductors, a dielectric isolator, and first and second electrical contact sleeves respectively coupled between the first and second tubular conductors and the dielectric isolator so that the first and second tubular conductors define a dipole antenna. The RF antenna assembly may include a thermal expansion accommodation device configured to provide a sliding arrangement between the second tubular conductor and the second electrical contact sleeve when a compressive force therebetween exceeds a threshold.

Abstract: A method, system and apparatus for centralized thermal recovery based on an oil reservoir are disclosed. The steps of the method including treating the oil reservoir with edge and bottom water layers as a whole unit; providing horizontal wells extending into the upper part of the edge and bottom water layers with an electric heating system configured to be positioned in each horizontal well; continuously centralized electric heating the edge and bottom water until temperature of the whole oil reservoir rises to the flowing state of formation oil; and then centralized thermal recovery is carried out by several recovery mechanisms in addition to viscosity reduction and gravity-assisted oil recovery. An electric heating system is also disclosed including an inner liner, ferrite permanent magnet rods, waterproof spiral electric heaters, an insulation board and a sealing board.

Abstract: An energetic charge for propellant fracturing may include a propellant material or a shape of the energetic charge being selected such that a rise time of a deflagration of the energetic charge is determined to be in the propellant fracturing regime. The propellant fracturing regime may be defined by a set of linear equations associated with the rise time for pressure from the deflagration of the energetic charge. The rise time may be calculated based on an equation {dot over (?)}=(dP/dt)/E, where {dot over (?)} represents a strain rate, dP/dt represents a change in pressure with respect to time, and E is Young's modulus, and where the set of linear equations relate the rise time to a borehole diameter.

Abstract: A method for performing a borehole and/or subsurface formation-related action for a subsurface formation of interest includes: receiving a plurality of sets of fracture data for a subsurface rock; generating a discrete fracture network (DFN) for each set of fracture data; and determining a property of each DFN that corresponds to each set of fracture data. The method also includes: mapping the plurality of sets of fracture data to the corresponding property using artificial intelligence (AI) to provide an AI model; inputting a set of fracture data for the subsurface formation of interest into the AI model; outputting a property of the subsurface formation of interest from the AI model; and performing the borehole and/or subsurface formation-related action for the subsurface formation of interest using the property and equipment configured to perform the borehole and/or subsurface formation-related action.

Abstract: This disclosure presents a method of increasing hydration time of a high concentration gelled fluid used in a fracturing fluid that uses multiple hydration tanks whose volumes are isolated from one another to provide a continuous batch of hydrated gel having improved hydration and viscosity.

Abstract: Methods and systems for determining subterranean fracture closure are disclosed herein. The methods can include electrically energizing a casing of a wellbore that extends from a surface of the earth into a subterranean formation having a fracture that is at least partially filled with an electrically conductive proppant and measuring a first electric field response at the surface or in an adjacent wellbore at a first time interval to provide a first field measurement. The methods can also include measuring a second electric field response at the surface or in the adjacent wellbore at a second time interval to provide a second field measurement and determining an increase in closure pressure on the electrically conductive proppant from a difference between the first and second field measurements.

Abstract: A crossover system, method and apparatus for an electric submersible pump (ESP) gas separators. A crossover of an ESP gas separator includes a first helical pathway for higher density fluid that extends at an angle of 10° to 40° from a horizontal plane through the crossover, the first helical pathway fluidly coupled to a spider bearing including crescent shaped vanes that remove rotational momentum from the higher density fluid, a second helical pathway for lower density fluid that tangentially intersects a crossover jacket, the first helical pathway and the second helical pathway defined by a channel having teardrop shaped openings in the crossover jacket that define channel exit ports venting to a casing annulus, and teardrop shaped openings in a crossover skirt that define a channel entrance, where the first helical pathway is around the channel and the second helical pathway is through an inside of the channel.

Abstract: Systems, methods, and computer-readable media for mitigating collision occurrences on a drilling rig, of which an example of the method includes associating ultra wide band (UWB) tags with pieces of rig equipment and rig personnel. The tags are configured to communicate with one or more anchors. The method also includes determining interlock rules associated with each of the pieces of rig equipment, monitoring positions of the pieces of rig equipment and the rig personnel using the tags, in real-time, determining that one or more of the interlock rules are violated by a position of one or more of the pieces of rig equipment, rig personnel, or both, and, in response to determining that the one or more of the interlock rules are violated, at least partially disabling operation of one or more of the pieces of rig equipment.

Abstract: A steering tool is movable by a drill string to form an underground bore along an intended path. A sensing arrangement of the steering tool detects its pitch and yaw orientations at a series of spaced apart positions along the bore, each position is characterized by a measured extension of the drill string. The steering tool further includes a receiver. At least one marker is positioned proximate to the intended path, for transmitting a rotating dipole field to expose a portion of the intended path to the field for reception by the receiver. The detected pitch orientation, the detected yaw orientation and the measured extension of the drill string are used in conjunction with magnetic information from the receiver to locate the steering tool. The steering tool may automatically use the magnetic information when it is available. A customized overall position determination accuracy can be provided along the intended path.

Abstract: A method and a system for monitoring a condition of an elastic element used in a downhole tool are provided. The method comprises acquiring an output signal from a flexible-type sensor installed in the elastic element, the sensor sensing at least one of strain and stress of the elastic element, and estimating a condition of the elastic element based on the output signal from the sensor. The system comprises a flexible-type sensor installed in the elastic element, the sensor sensing at least one of strain and stress of the elastic element and a processor to acquire an output signal from the sensor and estimate a condition of the elastic element based on the output signal from the sensor.

Abstract: A system for ranging between two wellbores where an emitter electrode and return electrode of a current injection system are disposed to drive a current to a conductive member within a target wellbore to create an electromagnetic field about the conductive member. The electromagnetic field is measured utilizing a sensor disposed in an investigative wellbore, which may be in the process of being drilled. In some embodiments, the emitter electrode and return electrode are positioned on the surface of a formation, spaced apart from one another with locations on the surface selected to optimize current, and therefore, the electromagnetic field, at a desired point along the conductive member. In some embodiments, one or both of the emitter electrode and return electrode are positioned in the target wellbore.

Abstract: A system includes at least one processor, and a memory coupled to the at least one processor having instructions stored therein. When executed by the at least one processor, the instructions cause the at least one processor to perform functions including functions to: apply a treatment at a first well in the subterranean formation, wherein the treatment is for stimulating production; perform a step down analysis of the first well at each of a plurality of stages of the first well; determine a downhole flow distribution at each of the plurality of stages; develop a model for correlating the downhole flow distribution and the step down analysis at each of the plurality of stages; use the developed model to estimate a downhole flow distribution at a stage of a second well; and determine whether to bypass a deployment of the diverter material at the stage of the second well based on the estimated downhole flow distribution.

Abstract: A reconfigurable network for interconnecting tools in a bottom hole assembly is disclosed. The network includes nodes that have reconfigurable switches that can be configured to provide a conductive path for the bus through the node, connect a terminator to the bus, and/or connect a tool to the bus. The exact configuration (i.e., states) of the switches in each node may be automatically selected based on a detected fault in a tool attached to a node and/or the state of other switches in the node or/a specific request is received. Various node embodiments and a method and circuit for automatically disconnecting a tool from the network in response to a tool fault are further disclosed.

Abstract: A telemetry system for a resource exploration and recovery system including a tubular defining a flow bore, and a superconductor wire disposed within the flow bore. A resource exploration and recovery system including a first system, a second system fluidically connected to the first system, and a telemetry system operatively connected to the first system extending into the second system, the telemetry system including a tubular defining a flow bore, and a superconductor wire disposed within the flow bore.

Abstract: Ground penetrating radar (GPR) measurements from a downhole well tool in a wellbore are obtained to identify length of fractures adjacent the wellbore. A ground penetrating radar transmitter of the downhole tool emits an electromagnetic pulse. The electromagnetic wave of the ground penetrating radar is diffracted on encountering an end or tip of a fracture, which acts as a secondary source. The diffracted signal is then collected by downhole receiver(s) of the downhole tool. Length of the fracture is determined based on the time of travel of the electromagnetic wave from its emission until its collection as a diffracted signal by the downhole receiver(s).