Abstract: An expandable reel for a well system includes a support frame configured to receive a torque from a motor, and a core assembly configured to couple to the support frame and receive a tubular of the well system about an outer surface of the core assembly, wherein the core assembly is actuatable between a first configuration and a second configuration while remaining coupled to the support frame, wherein the core assembly includes a first outer diameter when in the first configuration and a second outer diameter when in the second configuration that is different from the first outer diameter.

Abstract: Apparatus for gaining access to a well via a lateral access passage includes a flexible conduit which is to be inserted into the well via the lateral access passage so as to deviate from a direction of lateral insertion to a generally downward direction down the well. The flexible conduit includes a probe at a front end thereof. The probe includes a spring at least 0.5 m in length. A probe container is provided for accommodating the probe before it is inserted into the well. A guide may be provided for insertion along the lateral access passage and for assisting deviation of the flexible conduit from the direction of lateral insertion.

Abstract: A gripper assembly for a coiled tubing injector includes a gripper block configured to grip a tubular member, wherein the gripper block includes a gripper key and a channel, and a carrier configured to couple to a chain of the coiled tubing injector, wherein the carrier includes a carrier key, wherein the carrier key is receivable within the channel of the gripper block whereby the gripper block encloses the carrier key and the gripper key interlocks with the carrier key.

Abstract: The present disclosure relates to novel and advantageous devices, systems, and methods for stabilizing a coiled tubing guide extending from a coiled tubing unit. Stabilization of the guide may mitigate movement of the guide from lateral operational forces. The guide may be stabilized by clamping or anchoring a connection point between the guide and the unit, such as between the guide and a coiled tubing injector frame or a tubing guide mount coupled to the coiled tubing injector frame. In general, a clamp or other mechanism may operate to preload the pinned connection with a prescribed force. The direction of the force may be perpendicular, or near perpendicular, to an axis of rotation about which lateral loading on the guide causes moment forces.

Abstract: A coiled tubing injector apparatus for inserting and/or removing coiled tubing from a well head comprising a first injector column and a second injector column forming a central pathway within a frame. The first and second injector columns each comprise an inner and outer band, the outer band containing a plurality of rolling elements for engaging the coiled tubing and the inner band creating drive force to energize the outer band. The inner band further comprises a wear plate designed to sustain the majority of wear for less costly maintenance and repair of injection heads.

Abstract: According to one embodiment of the present disclosure, a computer-implemented method for controlling a coiled tubing unit at a well site is provided. The method includes receiving, by a processing device, wellbore data. The method further includes generating, by the processing device, an automated coiled tubing control plan for the coiled tubing unit based at least in part on the wellbore data. The method further includes controlling, by the processing device, the coiled tubing unit using the automated coiled tubing control plan to cause coiled tubing to run into a wellbore at the well site to a target depth, wait a waiting period of time, and cause the coiled tubing to run out of the wellbore.

Abstract: A coiled tubing injection and removal system includes an injector head forming a hollow cavity and configured to receive the coiled tubing therein the hollow cavity; a first chain assembly and a second chain assembly, both chain assemblies being secured within the hollow cavity and configured to engage and move the coiled tubing through the hollow cavity; and a first and second guide bar carried within the hollow cavity and configured to engage with and guide the coiled tubing in a direction relatively parallel with the first chain assembly and the second chain assembly.

Abstract: An injector control system for a coiled tubing unit includes a programmable logic controller arranged to receive a signal related to sensed parameters of a coiled tubing injection operation; a traction pressure control hydraulic circuit operable to adjust hydraulic pressure provided to at least one traction cylinder in a coiled tubing injection head; a motor pressure control hydraulic circuit operable to adjust hydraulic pressure provided to at least one motor of the coiled tubing injection head; and at least one of the traction pressure control hydraulic circuit and the motor pressure control hydraulic circuit including a proportional control valve in receipt of a variable electrical signal from the programmable logic controller. The programmable logic controller adjusts the signal delivered to the proportional control valve throughout the coiled tubing injection operation as dictated by the sensed parameters.

Abstract: A continuous well string injector features a frame carrying a pair of endless chain conveyors on opposite sides of a pathway. Each chain carries gripper dies for engaging the continuous well string when received in the pathway. A respective skate and cylinder block reside in the closed loop path of each chain. Each cylinder block features a plurality of blind bores having open ends facing toward the respective skate, and a respective piston is slidably disposed within each bore. Hydraulic extension and retraction ports open into the cylinder bores on opposite sides of the piston, whereby back and forth displacement of the pistons forces the skates toward and away from one another to grip and release the continuous well string. A front wall of the frame has an open horizontal gap aligned with the pathway to enable lateral entrance and exit of the continuous string to and from the pathway.

Abstract: Methods and apparatuses for mounting and/or removing carrier blocks from coiled tubing injector chains are needed. The carrier blocks are operable for supporting coil tubing grippers. The method and/or apparatus utilizes an assembled coiled tubing injector head chain assembly and/or mounting or removing the carrier blocks with respect to the coiled tubing injector head chain assembly.

Abstract: A technique facilitates rigless deployment of a pumping system, e.g. an electric submersible pumping system, to a desired downhole location. The pumping system is coupled to an electrical cable which is routed through an injector head. The pumping system is supported on the electrical cable and conveyed downhole to the desired position in a wellbore via the injection head. The system and methodology enable deployment of the electrical cable directly through the injector head without coiled tubing.

Abstract: A coiled tubing injector apparatus for inserting and/or removing coiled tubing from a well head comprising a first injector column and a second injector column forming a central pathway within a frame. The first and second injector columns each comprise an inner and outer band, the outer band containing a plurality of rolling elements for engaging the coiled tubing and the inner band creating drive force to energize the outer band. The inner band further comprises a wear plate designed to sustain the majority of wear for less costly maintenance and repair of injection heads.

Abstract: A conveyor apparatus (2), so-called injector head, to enable feeding of e.g. continuous tubing (7) or coiled tubing through the conveyor apparatus (2) to or from a wellhead and a well below and related to use of well tools. A pair of oppositely located, co-operatively movable, segmented continuous belts (28; 29) are installed in an apparatus frame (21), each belt comprising a plurality of interconnected gripper shoe carriers (30) carried and movable by means of a pair of continuous belt drive chains (31; 32), wherein the carrier (30) has roller means (35) configured roll against an elongate counter-force member (37), a so-called skate, associated with the frame (21), wherein a gripper shoe (38; 52) is co-operative with each carrier (30) to positively engage the tubing (7), and wherein a pair of said counter-force members (37) being adapted to interact with a respective belt (28; 29).

Abstract: The continuous oil pipe clamp mechanism includes a saddle-shaped clamp block and a clamp block seat. The saddle-shaped clamp block is buckled on the clamp block seat. The saddle-shaped clamp block includes a saddle-shaped clamp portion and a bottom, wherein the bottom has a clamp groove, and tongue platforms are arranged at two ends of the clamp groove. The clamp block seat includes a fit portion fitted to the saddle-shaped clamp block, wherein the fit portion is provided with a sunk groove matched with the clamp groove and pairs of bosses. Grooves matched with the tongue platforms are formed between the pairs of bosses. The clamp groove is buckled in the sunk groove, and the tongue platforms are arranged in the grooves and are limited by stop pins. The mechanism facilitates replacement of the clamp block, enabling an injection head to be stable in continuous work and convenient to maintain.

Abstract: A coiled tubing injector unit insert assembly includes a gripping insert configured to be coupled to a carrier block, the insert comprising a tongue with a first cutout configured to engage a shaft extending within a carrier block pocket, the shaft having a first diameter portion and a second larger diameter portion and a junction between the two shaft diameters that is located within the carrier block pocket to couple the gripping insert to the carrier block.

Abstract: A coiled tubing injector assembly having an arch for guiding coiled tubing into the injector and, including an injector selectively engageable with coiled tubing for forcing the coiled tubing through the injector in an upward or downward direction. There is also an injector mount and the injector is interconnected to the mount via a plurality of load cells, such that any forces exerted on the injector by flexing or twisting of the arch and/or coiled tubing guided by the arch are detected by the load cells.

Abstract: A coiled tubing injector apparatus for inserting and/or removing coiled tubing from a well head comprising a first injector column and a second injector column forming a central pathway within a frame. The first and second injector columns each comprise an inner and outer band, the outer band containing a plurality of rolling elements for engaging the coiled tubing and the inner band creating drive force to energize the outer band. The inner band further comprises a wear plate designed to sustain the majority of wear for less costly maintenance and repair of injection heads.

Abstract: An injector head used in coiled tubing systems including at least two opposed counter-rotating chain loops having a first end and a second end, the chain loops having a chain. The injector head further includes a fixed drive sprocket disposed at the first end of a chain loop and a floating sprocket disposed at the second end of the chain loop. In the injector head, there is a force applied to the floating bottom sprocket to maintain the chain loop at a desired chain tension. Additionally, the injector head includes a tension cylinder that automatically maintains the chain loop at the desired chain tension.

Abstract: The invention pertains to methods and apparatus for monitoring loads on an arched tubing guide of a coiled tubing injector caused by tension on coiled tubing. The load is sensed by a load sensor, for example, a load cell placed in a strut that supports the arched tubing guide, or in a load pin or load cell placed within the structure arched tubing guide or the connection of the arched tubing guide to a frame for the coiled tubing injector, at a location where the load is representative of the load placed on an arched tubing guide by tension in the coiled tubing. The load sensor generates a feedback signal. The load is monitored, either by an operator or a controller, and torque applied to a reel around which the tubing is wound is adjusted to avoid, or in response to, excessive loads on the arched tubing guide.

Abstract: An injector head unit includes one or more drive chains revolving within a common plane mounted on an upper drive sprocket and a lower drive sprocket, wherein at least one of the upper and lower drive sprockets are configured to move vertically to tension the drive chains, and at least one fixed reference point proximate to at least one of the upper and lower drive sprockets, wherein relative positioning of one of the movable upper and lower drive sprockets with the fixed reference point indicates to a user an amount of elongation of the drive chains after a certain period of time.

Abstract: The present disclosure provides an improved gripper shoe for a coiled tubing injector having a gripper shoe having a plurality of arcuate gripper elements spaced apart at predetermined intervals, a gripper carrier having a base having an upper surface and a lower surface, a first wall and a second wall located on the upper surface of the base, means for securing the gripper carrier to a continuous chain of a coiled tube injector located on the lower surface of the gripper assembly, and means for securing the gripper shoe to the gripper carrier, such that the gripper shoe is securely received by, and releasable from, the gripper carrier.

Abstract: Gripper dies for a continuous coiled rod injector are machined from a single, unitary, integral steel body forming both the base portion for connection to the injector drive chain and the gripping portion for engagement of the continuous coiled rod. Lower skate pressure is required relative to conventional aluminum dies, increasing the lifespan of injector components while providing improved performance and avoiding damage to the coiled rod by use of alternating grooves and ridges in the gripping face of the die and smoothly radiused transitions the ends thereof.

Abstract: An assembly and techniques for employing multiple motors to drive an oilfield injector. The injector is configured to drive a well access line such as coiled tubing and the motors may be electric in nature. Additionally, the motors are configured to operate at substantially sufficient cooling speeds for electric motors. Nevertheless, the motors are coupled through a common differential mechanism such that a range of differential speeds may be derived via comparison of the operating speeds of the motors. Thus, a wide array of injection speeds may be employed without requiring the motors to operate at dangerously low speeds in terms of electric motor cooling.

Abstract: A system and method for axially displacing a portion of coiled tubing into and/or out of a wellbore so that the coiled tubing does not incur a fatigue cycle during such axial displacement, such as, but not limited to a translation system located between the wellhead and the injector head base to axially displace the injector head and, therefore, the gripped coiled tubing, away from and toward, the wellhead.

Abstract: In some embodiments, apparatus useful for providing tubing into an underwater well includes at least one surface injector configured to control movement of the tubing into and out of the well and at least one underwater injector configured to apply pushing and pulling forces to the tubing.

Abstract: A coiled tubing injector, rollers on the backside of grippers on a gripper chain pass over at least one shallow groove or depression formed in, or gap between segments of, a planar roller contact surface of a skate, thereby momentarily removing or reducing the force being applied by the skate to the grippers as the grippers pass through at least one predetermined location within a gripping zone of the coiled tubing injector. The reduction or removal of the force on the grippers allows the grippers to reset their positions on the tubing at one or more predetermined locations in order to accommodate changes in the strain caused by changes in stress as the tubing moves through the injector.

Abstract: A well logging- or well intervention string injector includes two adjacent motorized endless chains with gripper elements for bearing against the string. The gripping elements have an engagement packer against the string. The gripping elements run over the back supporting rollers carried by separate back supporting roller brackets. The back supporting roller brackets further bear against an elongated hydrostatic pressure equalizing cushion with hydraulic fluid. The pressure equalizing cushion bears against a back supporting rail.

Abstract: A coiled tubing injector skate having rollers that independently adjust position to more uniformly distribute roller loading forces is provided. The skate includes a frame and at least one roller having a roller shaft with a first end retained by the frame and a second end retained by the frame. A first resiliently compressible material is disposed between the first end of the roller shaft and the frame. A second resiliently compressible material disposed between the second end of the roller shaft and the frame.

Abstract: A tubing injector has a first injector pair and a second pair of cooperating injector mechanisms. The first injector pair are positioned on a first track and the second pair are positioned on a second track. The tubing injector provides redundancy to address safety concerns. The first injector pair is movable to the engaged position, when the second injector pair is moved to the disengaged position and vice versa.

Abstract: A coiled tubing injector comprises a drive system for independently driving a plurality of chains independently but otherwise retarding relative motion between the driven chains when a chain begins to slip uncontrollably.

Abstract: A coiled tubing injector, rollers on the backside of grippers on a gripper chain pass over at least one shallow groove or depression formed in, or gap between segments of, a planar roller contact surface of a skate, thereby momentarily removing or reducing the force being applied by the skate to the grippers as the grippers pass through at least one predetermined location within a gripping zone of the coiled tubing injector. The reduction or removal of the force on the grippers allows the grippers to reset their positions on the tubing at one or more predetermined locations in order to accommodate changes in the strain caused by changes in stress as the tubing moves through the injector.

Abstract: A coiled tubing injector comprises a drive system for independently driving a plurality of chains independently but otherwise retarding relative motion between the driven chains when a chain begins to slip uncontrollably.

Abstract: A coiled tubing injector apparatus for inserting and/or removing coiled tubing from a well head comprising a first injector column and a second injector column forming a central pathway within a frame. The first and second injector columns each comprise an inner and outer band, the outer band containing a plurality of rolling elements for engaging the coiled tubing and the inner band creating drive force to energize the outer band. The inner band further comprises a wear plate designed to sustain the majority of wear for less costly maintenance and repair of injection heads.

Abstract: In an injector head (30) for handling tubing for insertion into and retrieval from a wellbore, a non-gripping portion of the path (22) of each chain loop (12), which is otherwise susceptible to oscillations when running in at least certain conditions, is constrained by a chain guide (44). The chain guide allows the chain to move freely as it is driven by the sprockets (16) in a loop, but dampens or prevents development of oscillations in the chain loop (12) when moving along one or more sections of its path in which it is not otherwise be pressed against tubing or constrained by sprockets or tensioners.

Abstract: A device and method are for well operations. The device includes a tower with an outside and an inside. The tower is provided, on its outside with a work platform vertically movable in the position of use and a vertically movable equipment platform which is independently movable relative to the work platform. The work platform is provided with a hanger device.

Abstract: An injector head used in coiled tubing systems including at least two opposed counter-rotating chain loops having a first end and a second end, the chain loops having a chain. The injector head further includes a fixed drive sprocket disposed at the first end of a chain loop and a floating sprocket disposed at the second end of the chain loop. In the injector head, there is a force applied to the floating bottom sprocket to maintain the chain loop at a desired chain tension. Additionally, the injector head includes a tension cylinder that automatically maintains the chain loop at the desired chain tension.

Abstract: The current invention relates to an improved gripper for use within a coiled tubing injector unit. The improved gripper comprises a carrier for securing the gripper to the chain drive mechanism of the coiled tubing injector unit and a gripping shoe carried by the carrier. The improved gripper provides a carrier and a gripping shoe designed to permit quick and easy removal and replacement of the gripping shoe in the field during operation of the coiled tubing injector unit.

Abstract: An improved multi-faceted gripper block to improve the interchangeability of gripper blocks when the need arises to change the size of the diameter material (e.g. tubing, cable, plastic, wire, hoses, or pipe) or to improve the interchangeability of gripper blocks when the need arises to change one or more gripper blocks due to unservicability. The gripper block assembly comprises a carrier body being connectable to a gripper chain in an injector apparatus, a removable and rotatable gripper block insert having one or more longitudinal sides created with one of many types of known gripping channels or surfaces for engaging tubing or other or other such elongated items. The gripper block insert can be secured into the carrier and can be removed and then replaced or rotated without removing a serviceable carrier.

Abstract: The current invention relates to an improved gripper for use within a coiled tubing injector unit. The improved gripper comprises a carrier for securing the gripper to the chain drive mechanism of the coiled tubing injector unit and a gripping shoe carried by the carrier.

Abstract: The current device relates to a gripper assembly for use within a coiled tubing injector unit. The gripper assembly comprises a carrier for securing the gripper to the chain drive mechanism of the coiled tubing injector unit and a gripping shoe carried by the carrier. The configuration of the gripper assembly permits quick and easy removal and replacement of the gripping shoe.

Abstract: A lubricator for use with a coiled tubing injector comprising an elongated housing having a first end and a second end. There is a guide system disposed in the housing for guiding coiled tubing passing through the housing, a first director proximal the first end of the housing to direct the coiled tubing in a first direction and a second director proximal the second end of the housing to direct the coiled tubing in a second direction.

Abstract: A method and apparatus for conducting earth borehole operations comprising a CT system comprising a first carrier with a reel of CT and a CT injector, a second carrier comprising a top drive rig having a mast, and a lifter operative to move the CT injector from the first carrier to an operative or near operative position with respect to the mast on the second carrier.

Abstract: An assembly and techniques for employing multiple motors to drive an oilfield injector. The injector is configured to drive a well access line such as coiled tubing and the motors may be electric in nature. Additionally, the motors are configured to operate at substantially sufficient cooling speeds for electric motors. Nevertheless, the motors are coupled through a common differential mechanism such that a range of differential speeds may be derived via comparison of the operating speeds of the motors. Thus, a wide array of injection speeds may be employed without requiring the motors to operate at dangerously low speeds in terms of electric motor cooling.

Abstract: A coiled tubing injector comprises a drive system for independently driving a plurality of chains independently but otherwise retarding relative motion between the driven chains when a chain begins to slip uncontrollably.

Abstract: A gripper block for conveying continuous rod in a well bore comprises a carrier body formed of a first metal and arranged to be mounted on one of the pair of continuous drive chains of a continuous rod conveying apparatus. A gripping element supported on the carrier body is arranged to engage the continuous rod and is readily separable from the carrier body. The gripping element is formed of a second metal which is softer than the first metal of the carrier body and softer than the continuous rod.

Abstract: A continuous feed injection unit used for example for injection and removal of continuous well string from wells operates in a dual speed configuration. The unit comprises a first hydraulic motor, a second hydraulic motor, cooperating continuous well string gripping chains connected to be driven by the first and second hydraulic motors, a hydraulic power supply connected to provide pressurized fluid to the first and second hydraulic motors and a control system for the hydraulic power supply. The control system for the hydraulic power supply has a motor speed control valve with at least a first and second operating configuration, the first operating configuration providing power fluid to the first and second hydraulic motors in parallel and the second operating configuration providing power fluid to the first and second hydraulic motors in series. The hydraulic power supply may be a conventional power tong hydraulic supply.

Abstract: A subsea coiled tubing injector apparatus is disclosed. The subsea coiled tubing injector apparatus includes a linear actuator and a pair of carriages coupled via the linear actuator. The linear actuator is electrically powered and is configured to apply lateral force to the carriages. The carriages are configured to move substantially laterally with respect to one another. Each carriage includes a tubing engagement assembly configured to engage tubing interposed between the carriages.

Abstract: The current invention relates to an improved gripper for use within a coiled tubing injector unit. The improved gripper comprises a carrier for securing the gripper to the chain drive mechanism of the coiled tubing injector unit and a gripping shoe carried by the carrier. The improved gripper provides a carrier and a gripping shoe designed to permit quick and easy removal and replacement of the gripping shoe in the field during operation of the coiled tubing injector unit.

Abstract: An improved coiled tubing injector head, comprising a plurality of powered chain loops, each having one practically straight side adjacent to the other chain loop(s) and biased against a tubing running in-between all the loops so as to grip the tubing and allow its transit into and out of a well. The chain loops are assembled from multifunctional links which both transmit drive and also form carriers for replaceable gripper blocks or are the carriers and gripper blocks combined, without need of a roller link chain or chains in addition to the multifunctional links. Three or more chain loops are provided, and the chain loops are driven by electric motors.

Abstract: The gripping element of a coiled tubing injector has a carrier and a removable gripping shoe mounted to the carrier. The removable shoe slides onto slots formed on the carrier and is floated on the carrier by inserting an elastomeric pad sandwiched between the carrier and shoe. A manually depressible spring along ones side of the carrier prevents the shoe from sliding out of the slots during operation of the injector.