Abstract: The present invention provides a clip including: a first member including a base, a pin portion projecting from the base, and an insertion receiving part that is a recess or a through-hole provided in the base; and a second member including a tube which is inserted into and mounted to a mounting hole formed in a mounting member, internally receives the insertion of the pin portion, and is rotatably mounted to the pin portion, and an inserted portion to be inserted into the insertion receiving part when the pin portion is inserted into the tube, wherein a guide is provided in a peripheral part of the insertion receiving part in the base, the guide contacting the inserted part and guiding the inserted part to the insertion receiving part when the pin portion is inserted into the tube.

Abstract: The apparatus may include a tool conveyed by a conveyance device. The tool has a body with a load bearing section, an outer surface defined by a diameter, a rotational axis, and a channel in the body extending from an opening at the outer surface. At least a part of the channel is inclined relative to the rotational axis of the body at the axial location of the opening in the body. The apparatus also includes at least one functional element disposed in the channel; and a conduit operatively connected to the at least one functional element transferring at least one of: (i) energy, (ii) a signal, (iii) a fluid, (iv) and formation material. Alternatively, the apparatus includes at least one self-contained functional element disposed in the channel.

Abstract: The invention relates to a rotation angle control and braking device for a power head of a directional drill, belonging to the technical field of coal mine drills. It includes a transmission shaft, driving piston, fixed toothed disk, moving toothed disk, end cover, rotary seat, connecting seat, and a rotary speed reducer with a self-locking function. One end of the transmission shaft is fixedly connected to the drill's driving shaft. The fixed and moving toothed disks are sheathed on the transmission shaft, with springs placed between the moving toothed disk and the end cover. Skewed teeth between the disks engage under spring action. By injecting oil into a sealing cavity between the connecting seat and driving piston, the driving piston moves the moving toothed disk to disengage the skewed teeth. The rotary seat, fixed to the moving toothed disk, connects to the rotary speed reducer's output disk, enabling controlled rotation.

Abstract: A method of preparing a pipe-section for welding to another pipe-section to form a pipeline comprising a plurality of said pipe-sections, the method comprising at least the steps of: (i) providing a pipe-section having first and second pipe-ends; (ii) defining a first portion L1 of the longitudinal length of the pipe-section from the first pipe-end being in the range 3% to 40% of the overall length of the pipe-section; (iii) defining a second portion L2 of the longitudinal length of the pipe-section from the end of the first portion L1 towards the second pipe-end; (iv) heating at least the first portion L1 to at least a first temperature T1 of at least 500° C. for at least 2 minutes; (v) maintaining a second temperature T2 of the second portion L2 during step (iv) below the first temperature T1. The invention is able to reduce the strain capacity during reel-laying of a pipeline formed from a plurality of pipe sections formed by the invention.

Abstract: A length of tubing and related apparatus and methods are described, where the length of tubing is deployable from a coiled configuration to an uncoiled configuration for performing a coiled tubing operation in a wellbore. The length of tubing includes a pipe of metal, and a liner of composite material that lines the pipe. The liner or the lined pipe includes a wall structure that incorporates means to communicate at least one service along the tubing.

Abstract: Methods for shortening the waiting-on-cement (WOC) time during primary and remedial cementing operations are disclosed. A fluid pill is injected into the wellbore that comprises reactants. The reaction is exothermic and heat is conducted into the cement sheath, thereby accelerating hydration and shortening the time necessary for the slurry to set and harden.

Abstract: A wear support assembly includes a wear pad arranged on top of a support plate, wherein the support plate has a lower surface for connecting to a raise boring tool and both the wear pad and the support plate have at least one hole for receiving a bolt to connect the wear pad to the support plate. Also, a raise boring tool for raise boring operations includes a reamer head having a body, a plurality of roller cutters connected to the body using a holder, a nose or drive stem connected the body, and at least one wear support assembly, wherein each support plate is connected directly to the raise boring tool and each wear pad is radially or perpendicularly bolted to each support plate.

Abstract: Systems and methods presented herein include an assembly of tools that can be arranged in a wellbore in such a way that allows a combination of formation testing (e.g., with a modular formation dynamics testing tool, a wireline formation testing tool, and so forth) and drill stem testing (DST). The assembly of tools enables performance of both types of activities potentially in a single run in the hole, and facilitate full control of the reservoir and formation fluids or, in case of injection, of injected fluids inside the tubing or drill pipe. In addition, the assembly of tools allows for multiple set points to perform zonal evaluations with the formation testing tools, and facilitate performance of full scale flow tests with the DST string.

Abstract: A biaser including a tubular body having a longitudinal axis, an outside surface, and an inside surface. A first plurality of openings extend from the outside surface to the inside surface, with adjacent ones of the openings each defining a beam extending at a first angle other than along the tubular body axis. A second plurality of openings in the body extend from the outside surface to the inside surface, with adjacent ones of the openings each defining a beam extending at a second angle that is other than along the tubular body axis and other than at the first angle. A method for making the biaser, includes depositing material and fusing the material together according to the geometry of the biaser.

Abstract: Systems and methods are disclosed to provide automatic bias control for intensity modulated silicon modulator by providing a laser light to a Mach-Zehnder modulator (MZM) and splitting the laser light into a first arm and a second arm, wherein light in the first arm experiences a phase section for data modulation and light in the second arm receives heat for bias control and a phase section for data modulation; providing a first output light of the MZM; providing a complementary output light a monitor photodetector (mPD); and applying an uneven spacing 3-level square wave as dither for automatic bias control of MZM which operates at quad point and phase tuning with a heater.

Abstract: A decoupling apparatus for use in a wellbore includes a top sub section and a bottom sub section rotationally coupled to the top sub section. The bottom and top sub sections are aligned along a decoupling apparatus axis. A torque ring is disposed between the top sub section and the bottom sub section. A method for decoupling a lower tubular section from an upper tubular section of a stuck downhole tubular string including the decoupling apparatus includes identifying the stuck downhole tubular string. A first torque is applied to an upper tubular section to rotate a top sub section from a first configuration to a second configuration. A second torque is applied to the upper tubular section to rotate the top sub section from the second configuration to a third configuration in which the top and bottom sub sections are decoupled from one another.

Abstract: Disclosed is an attachment system for detachably coupling a female tube end and a male tube end to each other to form foundation piles. The system includes corresponding cylindrical sleeve holes in tube sleeves of the tube ends; a coupling element which is fittable in the sleeve holes and rotatable through an angle therein; a blocking pin on the coupling element or on one of the sleeve holes; and a blocking slot in one of the sleeve holes or in the base body, so that the blocking pin engages in the blocking slot upon rotation of the coupling element in the sleeve holes. Additionally, one of the sleeve holes and the base body can be provided with corresponding sleeve slots in order to form a fitting hole together to fit a blocking element therein, in order to prevent rotation of the coupling element in the sleeve holes.

Abstract: A conduit coupling includes a first connector at a first end of the conduit coupling, a second connector at a second end of the conduit coupling, and a stem between the first connector and the second connector. A first end of the stem is attached to the first connector. A second end of the stem is attached to the second connector. The stem is bent at a particular bend angle along a bend plane. The first connector includes an indicator that indicates an orientation of the bend plane.

Abstract: A subsea tubular system comprises extended sections of a first material and interposed sections of a second, different material that aids in damping vibration resulting from subsea dynamic conditions such as current. The vibration damping sections may make up a portion of the overall system significantly less than the sections of the first material. The number, length, and positions of the vibration damping sections may be selected based on factors such as the diameter, overall length, profile, and so forth. The system may be used as a riser or other conduit for the production of minerals such as oil and gas.

Abstract: A flexible downhole component includes an upper connection for connecting the flexible downhole component to a first downhole tool and a lower connection for connecting the flexible downhole component to a second downhole tool. The flexible downhole component includes a flexible body disposed between the upper connection and the lower connection. The flexible downhole component includes an upper damping component and a lower damping component each configured to damp torsional oscillations.

Abstract: The invention relates to the drilling of wells in rock and hydrocarbon formations. Drilling is performed with a drill string having a bottom hole assembly (BHA) and drill bit. Drilling mud is circulated during drilling. A valved inlet port is provided in the BHA which, in the event of a pack-off, opens and allows drilling mud to enter an internal space in the BHA to relieve pressure. An outlet port at the proximal end of the BHA may be provided to allow the mud to flow back into the annulus around the drill string. In this way, rapid build-up of pressure is avoided and the driller has more time to respond to the pack-off.

Abstract: Coated tool comprising a coated surface, the coated surface comprising a substrate having a surface on which a coating is deposited, wherein the substrate is made of a material comprising cobalt, and wherein the coating comprises at least one boron-comprising layer, wherein the at least one boron-comprising layer comprises Al and the boron comprised in this layer is present as boride, thereby the boron-comprising layer is able to form further layers for providing a diffusion barrier layer effect, in particular for stopping diffusion of cobalt from the substrate surface to the coating, when the coated tool or the coated surface is exposed to temperatures in a range between approximately 600 and 1200° C.

Abstract: Methods for shortening the waiting-on-cement (WOC) time during primary and remedial cementing operations are disclosed. A fluid pill is injected into the wellbore that comprises reactants. The reaction is acclerating hydration and shortening the time necessary for the slurry to set and harden.

Abstract: A petroleum drill-string shock absorber includes a drill collar nipple, a driving unit, an outer shell, a helical guideway, a drill bit base, a woven metal ring and a vibration-absorbing composite beam, the vibration-absorbing composite beam consists of a sheet metal and a flexible material gasket bonded by an adhesive; the drill collar nipple is connected with the helical guideway; the helical guideway is connected with the drill bit base; the driving unit rotates on the helical guideway; the outer shell is connected with the drill bit base; a metal seal ring is configured to seal a space formed between the outer shell and the drill collar nipple, a sealed space is formed among the drill collar nipple, the outer shell and the drill bit base; the woven metal ring is placed between the helical guideway and the drill bit base configured to absorb an axial impact vibration.

Abstract: A drilling system tool including at least one sensor configured to detect movement of one or more components of the drilling system tool. The sensor is configured to operate at high pressures and temperatures typical in the drilling environment downhole. The sensors are suitable for vibration damping tools, rotary steerable motors systems, downhole motors, drill bits, or other similar downhole drilling equipment that includes a movable component.

Abstract: Provided are methods and system for hydrocarbon exploration. The method may include using a downhole reconfigurable pipe inspection tool for electromagnetic logging. The method may also include using the electromagnetic pipe inspection tool for inspecting wellbore pipes. The tool may include at least two modules, a signal generator for exciting the transmitter coil; and a receiver circuitry for measuring voltage across the receiver coil, wherein at least one tool parameter is reconfigurable. The first module houses a transmitter coil, a first end, and a second opposing end, wherein the first and second ends each have a connector thereon. The second module houses a receiver coil, a first end, and a second opposing end, wherein the first and second ends of the second module each have a connector thereon.

Abstract: A downhole tubing disconnect assembly includes a first tubing portion disposed in a wellbore, a second tubing portion downhole of the first tubing portion, and an actuation sleeve positioned between the first tubing portion and the second tubing portion. The actuation sleeve has a cylindrical body that selectively connects the first tubing portion and the second tubing portion. The actuation sleeve includes an uphole portion of the cylindrical body to selectively engage the first tubing portion, a downhole portion of the cylindrical body to selectively engage the second tubing portion, and a shifting profile in the cylindrical body. The shifting profile selectively engages a shifting tool disposed within the wellbore.

Abstract: A variety of methods are disclosed, including, in one embodiment, a method comprising: applying a wettability modifier coating on a surface of a downhole tool; disposing the downhole tool into a wellbore extending into a subterranean formation, wherein the wettability modifier coating is disposed on the surface of the downhole tool; traversing the wellbore with the downhole tool; and removing the downhole tool from the wellbore.

Abstract: The present disclosure relates to a rock drill bit for a percussive drilling hammer positioned at the cutting end of a hammer. The drill bit includes a head, an elongated shank connected to the head at a front end of the bit, a head-shank transition area where the head connects to the shank, an anvil at the rear end of the shank for receiving the impact of the piston, a plurality of buttons provided at the front face of the head configured to engage the material to be crushed in the intended direction of drilling, and a plurality of flushing passages extending through the head and having at least one opening at the front face of the head. An angle formed between the head and the shank at the head-shank transition area is greater than 100 degrees.

Abstract: A system includes production tubing extending through at least one abandoned well, where an annulus is formed between the tubing and a wellbore wall of the abandoned well, at least one source of water feed connected to an opening to the annulus, at least one pump connected between the source of water feed and the annulus, and a humidification-dehumidification unit with at least one humidification chamber fluidly connected to the production tubing. At least one condensation chamber is connected to the humidification chamber, a waste water outlet is connected to the humidification chamber, and a purified water outlet is connected to the condensation chamber.

Abstract: A cylindrical tool string assembly for downhole data transmission comprises a cylinder comprising a transmission element such as an inductive coupler installed within a groove in its top surface connected to a transmission line housed within its exterior wall. The assembly includes a split spring ring housed within a groove formed in a bore wall of a tool string component such as a drill pipe or a downhole tool within the bottom hole assembly. The spring ring may be compressed and released when positioned within the groove. The spring ring provides a platform on which cylinder may be mounted. The split provides a passageway for the transmission line to exit the cylinder. The cylinder includes a recess in its top surface housing an extractor to facilitate removal of the cylinder. An anti-rotation lock between the cylinder and bore of the tool string component may prevent movement of the cylinder.

Abstract: A communication module for a survey tool assembly comprising: an outer housing, an inner body within the outer housing, an RF transceiver in the inner body, at least one coupling for coupling the communication module to a survey tool assembly, wherein the inner body comprises two or more apertures circumferentially arranged about the inner body, each aperture having: a) a length that allows propagation of RF signals to/from the RF transceiver, and b) a width such that the body has structural integrity to withstand: torsional forces due to rotation of a survey tool assembly and/or axial forces due to forces along the survey tool assembly.

Abstract: A down-the-hole drilling assembly activated by fluid under pressure includes a casing having an axially rearward and forward end, a piston arranged movably inside the casing, a plurality of fluid passages for feeding and discharging pressurized fluid into and out of a working chamber for generating reciprocating movement of the piston, a drill bit at the forward end and provided with an anvil facing towards the piston for receiving impacts therefrom and an annular drive sub surrounding at least a portion of a shank and cooperating with the bit to form fluid passages extending length-wise along the shank. The drive sub has a concave arcuate groove extending circumferentially to form a chamber for collecting fluid from the hammer exhaust and redistributing a volume of the collected fluid from channels formed between complimentary splines of the drive sub and splines of the bit to flushing holes arranged in the bit.

Abstract: A pipe assembly has a hollow inner member nested within a hollow outer member. A series of pipe assemblies are connected end-to-end to form a dual-member drill string useful in horizontal directional drilling operations. The drill string has mutually exclusive first and second fluid paths. Fluid seals, interposed between adjacent inner members of the string, isolate the first fluid path from the second fluid path. Compressed air is delivered into the first fluid path from above ground level, and routed to an underground boring tool. The expelled air and spoils are returned to above ground level by way of the second fluid path. One or more baffle elements are supported on the drill string adjacent the boring tool. The baffle elements are configured to prevent compressed air and spoils from flowing between the walls of the borehole and the drill string.

Abstract: A method for offshore dual-drive core drilling with three layers of casings under surge compensation is provided. According to the method, a drilling vessel is located at set latitude and longitude coordinates by a dynamic positioning system; drill pipes are stabilized by a seabed template; torques and drilling pressures can be transmitted during drilling of the casings by means of surge compensation of the casings at a wellhead; during drilling for sampling, the surge compensation can compensate to a certain extent for a change in water depth caused by rising or falling tides, or surge, thereby preventing the casings from colliding with equipment and ensuring the safety of wellhead operation; and the drilling of three layers of casings is achieved by means of dual driver heads to effectively protect a wellbore wall, such that high core-drilling rate and good core-drilling quality are achieved during drilling for sampling.

Abstract: The invention provides a managed pressure drilling system. The system comprises a rotating sealing device and a drill string assembly comprising a plurality of drill pipe members. Each drill pipe member has a first tool joint having a first tool joint outer diameter; a second tool joint having a second tool joint outer diameter; and a tubular body between the first and second tool joints having a tubular body outer diameter. In at least one section of the drill string the first tool joint outer diameter, the second tool joint outer diameter and the tubular body outer diameter are substantially the same. The rotating sealing device is configured to form a fluid seal against at least a part of the at least one section of drill string.

Abstract: A flow splitting device for gas reverse circulation drilling, including: an upper joint for connecting with a double-wall drill pipe; an inner tube which is arranged in the upper joint and defines a first passageway in communication with an inner chamber of the double-wall drill pipe, a second passageway in communication with an annular space in the double-wall drill pipe formed between the inner tube and the upper joint; a lower joint, having an upper end fixedly connected with the upper joint and a lower end for connecting with a drill tool; and a flow guiding member provided between the upper joint and the lower joint. A flexible sealing mechanism is provided outside the upper joint. The flexible sealing mechanism extends radially outward relative to the upper joint and the lower joint to form a sealing contact with a wellbore wall.

Abstract: A drilling system can be used to drill a borehole. The drilling system may include a first housing defining a main fluid flow path and a second housing defining a bypass flow path toward an annulus of a wellbore. A flow control choke may be positioned between the first housing and the second housing. The flow control choke may include a rotatable section and a stationary section that is stationary relative to the rotatable section. The stationary section may have a curved interface with the rotatable section for restricting a flow of a drilling fluid through the bypass flow path.

Abstract: A fluid end assembly of a hydraulic fluid pump includes a housing, a plug member, a lock cover, and at least one retention pin. The housing may include at least one bore. The plug member may be positioned at least partially within the at least one bore. The lock cover may be coupled to the housing and configured to retain the plug member within the at least one bore during operation of the fluid end assembly. The at least one retention pin may extend at least partially through a portion of the lock cover to retain the lock cover in a rotational position that retains the plug member at least partially within the bore.

Abstract: A tool includes an internal assembly configured to be positioned at least partially within a body. The tool also includes a collet configured to be positioned at least partially within the body and axially-adjacent to the internal assembly. The collet includes a plurality of fingers that are circumferentially-offset from one another. At least one of the fingers includes a protrusion that extends radially-outward and is configured to be positioned at least partially within a recess formed in an inner surface of the body to secure the collet in place with respect to the body. The tool also includes a collet pin configured to be positioned at least partially within the body, axially-adjacent to the internal assembly, and at least partially within the collet. The collet pin is configured to contact the internal assembly to secure the internal assembly in place within the body.

Abstract: A downhole tool has a tubular body defining an outer wall. A port is defined in the outer wall and a plug is received in the port. The plug is detachably connected to the outer wall and expellable into an annulus between the tubular body and a wellbore in which the downhole tool is placed upon the application of pressure in an interior of the tubular body.

Abstract: A friction reduction system includes a housing including a central axis and a central passage, a valve disposed in the housing and including a first valve body and a second valve body wherein the first valve body is permitted to rotate relative to the second valve body, and a mandrel coupled to the second valve body and permitted to travel axially relative to the housing, wherein a first net pressure force is applied against the mandrel that corresponds to a drilling fluid pressure of a drilling fluid in response to flowing the drilling fluid through the valve and transitioning the valve from a closed configuration to an open configuration, and wherein a second net pressure force is applied against the mandrel that corresponds to a wellbore fluid pressure in response to flowing the drilling fluid through the valve and transitioning the valve from the open configuration to the closed configuration.

Abstract: A subsea assembly including; a foundation, a support device; and a subsea equipment adapter frame is provided. The foundation, support device and subsea equipment adapter frame are separate modular components that can be installed separately. The foundation may be a suction anchor. A method of installing and uninstalling the subsea assembly is also provided.

Abstract: A method of cleaning production tubing in a producing petroleum well comprising the steps: i) providing collection tool configured for both selectively collecting debris while residing downhole to obtain collected debris as well as selectively releasing collected debris while residing downhole; ii) lowering collection tool to specific location at certain depth into production tubing of the producing petroleum well where there is at least a partial choking of local production flow due to accumulated debris deposited on production tubing; iii) collecting accumulated debris with collection tool to obtain collected debris; iv) pulling collection tool to production zone of production tubing or downstream of production zone where there will be enough production flow during production to ensure lifting capacity for collected debris; and v) releasing collected debris into production zone of production tubing to obtain released debris being lifted by production flow when production is running.

Abstract: A downhole transducer assembly capable of being safely operated at a variety of pressures and depths may include a turbine rotatable by a fluid pressure differential rotationally fixed to a rotor in a generator. To reduce the rotational speed of the turbine and rotor, a pressure regulator may limit a fluid pressure differential by controlling the volumetric flow. One or more nozzles may be configured to automatically regulate a nozzle diameter, and therefore the pressure drop across the nozzle. A surge protector may be connected to the generator.

Abstract: A telemetry tool comprising a tube comprising a side wall comprising an exterior side wall surface spaced a distance apart from an interior side wall surface. The tube comprises first and second flanged end connectors suitable for connecting the tube in a telemetry tool string, the tube comprising a major and minor axial bore. The minor axial bore being enclosed within the side wall. The exterior side wall surface is circular in cross section and the interior side wall surface comprises a substantially kidney shaped cross section forming a convex portion of the side wall. The minor axial bore may be enclosed within the convex portion of the side wall. The tool further comprises inductive couplers disposed within the convex portion of the side wall. Alternatively, the inductive couplers may be disposed within the end connectors. The couplers are connected by a cable running through the minor axial bore.

Abstract: An insert for installation on an inner pipe member of a dual-pipe member assembly. The insert is interposed between an external shoulder formed on the inner pipe member and an internal shoulder formed in an outer pipe member. Shoulder-to-shoulder impacts between pipe members results in wear to the insert, rather than to either pipe member. The insert has the shape of an unclosed loop and is positioned within an endless external groove formed in the inner pipe member.

Abstract: A threaded product is provided having an external thread form on a tubular pin member comprises load and stab flanks on either side of a crest, along with smooth transitions between the crest and flanks. An elliptical root between the flanks aids in reducing stress and forms a dope volume between a non-conforming crest of an internal thread form of a tubular box member. Flanks of the internal thread of the box member contact flanks of the external thread of the pin member to form areas of mating contact on either side of the thread.

Abstract: A sonic-powered method is provided for horizontal directional drilling. The method includes positioning a drilling apparatus at one end of a desired path for a generally horizontal bore to be formed, and attaching a drill bit and a drill rod to a drill head. The method also includes advancing the drill bit and the drill rod into and through the ground along the desired path by advancing the drill head to move along the drill mast. A sonic oscillator of the apparatus applies sonic energy in the form of high frequency vibrations to the drill rod and the drill bit to cause the drill bit to penetrate through an underground formation in front of the drill bit along the desired path. The sonic vibrations help efficiently penetrate through different materials in underground formations. The drilling apparatus can also use sonic vibrations to install drill casings to stabilize the bore.

Abstract: A downhole tool control system for a drill string rotary steerable tool that includes a body having an inner chamber, a piston gallery extending between the inner chamber and a piston port, and an exhaust gallery extending between the inner chamber and an exhaust port. A spool in the inner chamber is movable into a plurality of positions to direct and control the timing and duration of the flow of drilling fluid to energize pistons of the rotary steerable tool, and to de-energize the pistons. The spool includes a first passage in fluid communication with a drilling fluid inlet port but not the exhaust port, and a second passage in fluid communication with the exhaust port but not the drilling fluid inlet port.

Abstract: A method and system for determining a position of a linearly translating member. The method may comprise transmitting an excitation into a linearly translating member through one or more couplers from an acoustic device disposed in an outer housing, recording a reflected excitation from the linearly translating member with the acoustic device, and identifying a position of the linearly translating member with respect to the acoustic device. The system may comprise an outer housing, a linearly translating member disposed within the outer housing, an acoustic device disposed in the outer housing and configured to transmit an excitation at various frequencies and various amplitudes and record returned excitation frequencies and amplitudes and time of travel, and an information handling system in communication with the acoustic device.

Abstract: Drill collars may be constructed using solid-state welding processes. Solid-state welding produces robust drill collars with high fatigue lifespans and permits individual segments of the drill collar to be optimized based on their intended use. A drill collar may be formed of a first segment with a different material, density, modulus of elasticity and/or geometry than an adjacent second segment fused thereto. If a segment of a drill collar is damaged in use, the damaged segment may be removed and replaced, possibly without de-rating the drill collar. Methods of forming the solid-state welds may include friction welding adjacent segments to one another such that features in each segment are circumferentially aligned when the weld is formed. Supplemental energy sources may provide additional heat at the welded surfaces to ensure the segments are effectively fused.

Abstract: A vibration isolating coupler including a first coupler portion, a second coupler portion including an external surface and an internal surface portion, and a vibration isolating portion extending between the first coupler portion and the second coupler portion. The vibration isolating portion including a first solid annular portion and a second solid annular portion. The vibration isolating portion including a plurality of slots extending from the first solid annular portion toward the second solid annular portion forming a plurality of vibration isolating elements. Each of the plurality of vibration isolating elements is disconnected from adjacent ones of the plurality of vibration isolating elements by a corresponding one of the plurality of slots. The plurality of vibration isolating elements enabling torsional rotation of the first coupler portion relative to the second coupler portion.

Abstract: An apparatus for retaining a transmission line within a drill string component includes a drill string component comprising a bore having an internal diameter. A slot is formed in the internal diameter to receive a transmission line. A first feature within the slot is configured to engage a corresponding second feature on the transmission line and thereby retain an end of the transmission line. The first feature comprises a first angled surface configured to contact and engage a corresponding second angled surface of the second feature. The first and second angled surfaces are oriented such to keep the transmission line retained within the slot when tension is placed on the transmission line. A corresponding system is also disclosed.

Abstract: An apparatus for retaining a transmission line within a drill string component is disclosed. In one embodiment, such an apparatus includes a drill string component comprising a bore having an internal diameter. A slot is formed in the internal diameter to receive a transmission line. A first feature within the slot is configured to engage a corresponding second feature on the transmission line and thereby retain an end of the transmission line. A sleeve is inserted into the internal diameter to keep the transmission line within the slot. A corresponding system is also disclosed.