Abstract: The present invention includes an interchangeable coil tubing support block that provides a means for quickly adapting a wheel system for wheel-type coiled tubing injectors for a wide variety of tubing sizes. In addition, the present invention provides a light weight, robust, and wear resistant means of contacting and fully supporting the tubing while it is being injected into and withdrawn from a well.

Abstract: A reeling mechanism for coiled tubing, suitable for use by work in a well. The reeling mechanism comprises a reel section with coiled tubing, a reel cradle section, and means suitable for unwinding or rewinding the coiled tubing from/on the reel section when the coiled tubing is being inserted into or withdrawn from the well. The reel section with the coiled tubing has a pallet section arranged thereto and located beneath its axis of rotation. The pallet section is adapted to secure the reel section with the coiled tubing. The pallet section comprises guide elements for running along guiding parts positioned on the reel cradle section, so that the reel section with the coiled tubing and the reel cradle section may be connected in a controlled manner. The pallet section will ensure that the reel section may be transported in a stable position out to the well.

Abstract: A pair of spooled tubing strings are simultaneously run into a hydrocarbon well carrying a chamber providing a check valve. The chamber is positioned below a hydrocarbon formation so that liquid produced from the formation falls adjacent and passes into the chamber through the check valve. Periodically, gas is delivered through one of the spooled tubing strings to push liquid out of the chamber upwardly through the other of the tubing strings. Gas produced from the formation flows upwardly in an annulus between the spooled tubing strings and a production string in the well. The apparatus can be used to run only one string of tubing into a well and has a number of features, including measuring the load applied to the tubing string and measuring the amount of tubing run into or out of a well.

Abstract: Coiled tubing or a portion thereof having a first part spaced-apart from a second part, the coiled tubing having a first outer diamter at the first part and a second outer diameter at the second part, the first outer diameter different from the second outer diameter, and outer diameter of the coiled tubing continuously diminishing or increasing from the first part to the second part, in one particular aspect thus varying over its entire length; and methods for using and methods and apparatuses for making such coiled tubing.

Abstract: A downhole coiled tubing recovery apparatus and method which utilizes vibration and resonant vibration in particular, to remove coiled tubing and/or other objects which are stuck or jammed downhole in a well. In a preferred embodiment the coiled tubing recovery apparatus includes an oscillating apparatus suspended from a rig and fitted with a coiled tubing bail for mounting the coiled tubing and the method includes guiding the coiled tubing from a reel through the bail and into and from an injector head and the well, responsive to raising and lowering of the oscillating apparatus and the tubing bail. One or more rod clamps are typically used in connection with the coiled tubing bail for manipulating the coiled tubing through the injector head to and from the reel. In another embodiment of the invention the coiled tubing bail is omitted and the coiled tubing is suspended directly from a fitting attached to the oscillator and extends through the injector head into the well.

Abstract: This invention relates to a method for use in coiled tubing operations wherein fatigue of the coiled tubing owing to short trips is reduced by reducing the number of bending and straightening events that coiled tubing undergoes to accomplish a particular wellbore objective. The invention relates to a method that allows the coiled tubing reel and tubing reeled thereon to remain stationary while making small movements of coiled tubing using the injector. The invention also relates to a method that permits synchronized movement of coiled tubing between the coiled tubing reel and injector.

Abstract: A reel assembly having three reels disposed side-by-side on a shaft pays out coiled tubing to an injector. A conveyor is used to support and guide the coiled tubing during travel from the reels to the injector. The conveyor is selectively rotatable such that the conveyor may be directed to the reel which actively pays out the coiled tubing. In another embodiment, two reels are slidably disposed side-by-side on a shaft. A conveyor is used to support and guide the coiled tubing during travel from the reels to the injector. In this embodiment, the conveyor is directed to a specific location on the shaft and the reels are slid into the specific location for coiled tubing payout.

Abstract: A pair of spooled tubing strings are simultaneously run into a hydrocarbon well carrying a chamber providing a check valve. The chamber is positioned below a hydrocarbon formation so that liquid produced from the formation falls adjacent and passes into the chamber through the check valve. Periodically, gas is delivered through one of the spooled tubing strings to push liquid out of the chamber upwardly through the other of the tubing strings. Gas produced from the formation flows upwardly in an annulus between the spooled tubing strings and a production string in the well. The apparatus can be used to run only one string of tubing into a well and has a number of features, including measuring the load applied to the tubing string and measuring the amount of tubing run into or out of a well.

Abstract: An injector arrangement for use in a rig has a movable carrier, a derrick tiltably mounted to the carrier, and a trolley capable of sliding along the derrick. An injector cradle is movable along the trolley in at least a plane perpendicular to the derrick and is pivotally mounted beneath the trolley. An injector is supported at its upper end from the cradle. At least two hydraulic cylinders are supported at one end by the derrick and are engaged at an opposed end to a lower end of the injector for rotating and tilting the injector relative to the trolley and derrick.

Abstract: A seal assembly for dual string coil tubing injection into a subterranean well includes a seal plate having first and second bores with annular seals for providing a high-pressure fluid seal around first and second coil tubing strings inserted through the respective bores. The seal plate is adapted to be connected directly to a wellhead, or a lubricator if a downhole tool is connected to either one, or both of the first and second coil tubing strings. The seal assembly further includes passages for supplying lubricant to the first and second annular seals to lubricate the respective seals while the respective first and second coil tubing strings are injected into and extracted from the wellhead.

Abstract: The present invention provides a system including a spoolable compliant guide, injector and lubricator to obtain vertical access to any oil well and to insert coiled tubing therein to. The spoolable compliant guide provides a substantial distance between the injector and the annular well seal at the lubricator and functions as a crimp or bend resistor for the coiled tubing therein facilitating the imposition of compression forces thereon. This enables the injector to be conveniently positioned remote from the wellhead, not necessarily vertically above the wellhead, on the facility with the wellheads or on an entirely separate facility, vehicle or vessel. Wellheads on land, offshore or underwater can all be accessed. Pressurized well fluids are prevented from entering the spoolable compliant guide thus decreasing the risks associated with its damage, failure or emergency disconnection.

Abstract: The present invention provides a system including a spoolable compliant guide, injector and lubricator to obtain vertical access to any oil well and to insert coiled tubing therein to. The spoolable compliant guide provides a substantial distance between the injector and the annular well seal at the lubricator and functions as a crimp or bend resistor for the coiled tubing therein facilitating the imposition of compression forces thereon. This enables the injector to be conveniently positioned remote from the wellhead, not necessarily vertically above the wellhead, on the facility with the wellheads or on an entirely separate facility, vehicle or vessel. Wellheads on land, offshore or underwater can all be accessed. Pressurized well fluids are prevented from entering the spoolable compliant guide thus decreasing the risks associated with its damage, failure or emergency disconnection.

Abstract: A drilling rig includes a tower, a stabilizer for lifting/lowering an injector and BOP stack, and a powered arm adapted to manipulate BHA segments. The tower includes a plurality of interlocking modules and is mounted on a two perpendicularly aligned skids. The tower is also provided with an opening that enables the side loading of equipment. The preferred rig includes one module adapted to support a stabilizer that includes hydraulic lifts that can raise the injector and BOP stack off the wellhead. The stabilizer also accommodates the thermal expansion of the BOP stack by rising and lowering the stack during well servicing operations. The powered arm attaches to the tower and includes an articulated gripper for manipulating the bottom hole assembly segments. Preferably, the powered arm is controlled by a general purpose computer that guides the powered arm through a predetermined sweep.

Abstract: The present invention provides a system including a spoolable compliant guide, injector and lubricator to obtain vertical access to any oil well and to insert coiled tubing therein to. The spoolable compliant guide provides a substantial distance between the injector and the annular well seal at the lubricator and functions as a crimp or bend resistor for the coiled tubing therein facilitating the imposition of compression forces thereon. This enables the injector to be conveniently positioned remote from the wellhead, not necessarily vertically above the wellhead, on the facility with the wellheads or on an entirely separate facility, vehicle or vessel. Wellheads on land, offshore or underwater can all be accessed. Pressurized well fluids are prevented from entering the spoolable compliant guide thus decreasing the risks associated with its damage, failure or emergency disconnection.

Abstract: The disclosure describes a spoolable compliant guide, a system including a spoolable compliant guide and injector and methods for using the compliant guide, where the guide is designed to connect at one end to the injector and at its other end to a remote installation having a seal and to allow coiled tubing to be inserted into the installation through the seal. Because the guide permits a substantial distance to exist between the injector and the installation seal and functions as a crimp or band resistor for the coiled tubing, the guide enables the injector to be conveniently positioned remote from the installation such as a wellhead and assumes a compliant shape between the injector and the installation allowing dynamic relative movement between them without the use of heave compensators. Thus, for subsea installations, the injector, its control system and coiled tubing reels can all be located on the water's surface for ease of access and maintenance.

Abstract: A means and method for supporting and applying transverse loads to coiled tubing during its injection into and withdrawal from a well by using novel rollers having coaxial segmented arcuate faces. The arcuate faces have arcs with the same radius as that of the tubing to be supported and are mutually concentric, but are independently rotatable. The novel rollers may be both driven and undriven.

Abstract: A tapered connector for a tubing string. The present invention includes a tapered connector used in interconnecting sections of the tubing string having differing outside diameters. The connector is preferably conical and fixedly attached to the tubing portions in various ways, such as welding. The tubing string can be injected into a well by using a tubing injector with gripper blocks having a V-shaped groove defined therein adapted for engaging the different diameter tubing sections and the tapered connector and methods of injecting are also disclosed.

Abstract: The present invention provides spoolable continuous composite coiled tubings made from substantially nonmetallic materials for use in wellbores. The composite coiled tubing has a selected thickness and a through passage. The composite coiled tubing preferably includes a plurality of layers of composite materials. A fiber optic string is disposed in the composite coiled tubing, preferably during the manufacture of the composite tubing. A plurality of spaced apart sensor elements on the fiber optic string provide measurements of one or more downhole parameters of interest during the wellbore operations. The fiber optic string may be embedded or placed along the composite coiled tubing. A liner may be disposed inside the composite coiled tubing to isolate the inner surface of the coiled tubing and the fiber optic string from the drilling or the wellbore fluid passing through the coiled tubing.

Abstract: A reel assembly having three reels disposed side-by-side on a shaft pays out coiled tubing to an injector. A conveyor is used to support and guide the coiled tubing during travel from the reels to the injector. The conveyor is selectively rotatable such that the conveyor may be directed to the reel which actively pays out the coiled tubing. In another embodiment, two reels are slidably disposed side-by-side on a shaft. A conveyor is used to support and guide the coiled tubing during travel from the reels to the injector. In this embodiment, the conveyor is directed to a specific location on the shaft and the reels are slid into the specific location for coiled tubing payout.

Abstract: A method of performing a downhole well completion cleanup is provided. In a described embodiment, completion fluids from a first zone are flowed into a tubular string, and then the fluids are discharged into a second zone. An apparatus usable in the method is provided, in which a downhole pump is utilized to pump the fluids from one zone to the other. The pump may be operated in a variety of manners. The apparatus may also include fluid identification sensors and telemetry devices for monitoring the progress of the cleanup operation.

Abstract: A method of and apparatus for inserting tubing into a well bore by supplying a leading end of a well bore tubing towards the well bore, with a piston on the leading end of the well bore tubing; and supplying fluid under pressure to the piston to force the piston and the leading end of the well bore tubing downwardly into the well bore.

Abstract: In a method for use in coilable tubing operations, such as onshore and offshore drilling for oil/gas, a coilable tubing (34) is used. The coilable tubing (34) is coiled up on a drum (36) and uncoiled therefrom by means of a feed-in and feed-out injector (32), said drum 936) being rotatable about its own axis. In order to enable rotation of the coilable tubing 934) within the well such that the angled transition piece carrying the bit is rotated to take the correct orientation, in order to enable drilling along a predetermined path without having to use a downhole orientation tool, the coilable tubing (34) is put into rotational movements during forwardly feeding thereof. To this end, the drum 936) and the underlying injector (32) may be placed on a rotary table (30) having a vertical rotational axis (A—A) aligned with the vertical symmetry axis of an underlying blowout preventer (28). The drum (36) for the coilable tubing (34) is, preferably, eccentrically positioned on the rotary table (30).

Abstract: An Internal Bottom Hole Assembly (IBHA) for a Coiled Tubing (CT) enables the CT to be used with other devices downhole. The IBHA includes a connector, a valve assembly and an emergency disconnect device, all of which are mounted internally in the CT. The connector couples to the inside of the CT by means of wedges that are urged against the inside wall of the CT. The valve assembly may be mounted either between the connector and the disconnect device or may be on the side of the connector away from the disconnect device. The valve assembly includes one or more flapper valves that are able to pass a ball through at a minimum flow rate of fluid, enabling the ball to be used to operate the disconnect device.

Abstract: An apparatus for insertion into a well to displace well fluid. A flexible hose is lowered into an annulus between strings of casing. A nozzle is affixed to the lower end of the hose. During insertion, the hose is pressurized and rigid to keep the hose from winding about the well. To keep the hose rigid, internal pressure is maintained in the hose. The nozzle is provided with a check valve that holds the internal pressure up to a selected amount. Once the hose is lowered to a desired depth, the operator increases the pressure sufficiently in the hose to open the check valve, thereby allowing heavy liquid to flow out. The heavy liquid displaces the lighter well production, which flows out of the outlet. After the heavy fluid has been dispensed, the internal pressure is reduced, causing the check valve to close. The check valve can also be opened during insertion, if desired.

Abstract: A trailer (10) has a dropped center section (12) defining a well (16) for a coiled tubing reel (22). A mast (30) has a pair of posts (34) on which a carriage (32) is mounted for movement along posts (34). An injector head (36) is supported on carriage (32) for pivotal movement in a vertical plane relative to mast (30) and for horizontal movement along a tubular support member (38) of carriage (32) relative to mast (30). Mast (30) is pivotally mounted on the rear end of trailer (10) for movement away from trailer (10) for positioning over a wellhead. In a stored position, mast posts (34) fit alongside the ends of reel (22) so that to the total height of the stored coiled tubing rig is no more than 13½ feet for over the road travel.

Abstract: Pipe used in drilling and/or completing wells is stored in long rectilinear segments or strings in the space adjacent a drilling rig being used to construct a well. The pipe is introduced into the well, or extracted from the well, in long segments made up of multiple individual pipe sections. In one embodiment, long rectilinear segments of pipe are bent into a curve that extends from the rig to the space surrounding the rig, where the pipe re-assumes its rectilinear shape. The curve radius is greater than the pipe's yielding bending radius. On a water-based rig, the pipe is received in the water surrounding the rig where it may be stored, tested, inspected, reassembled, treated, and/or otherwise processed. The pipe may be received within a long pipe storage sleeve that is buoyed laterally at or below the water surface or it may be secured to a guy line anchored between the rig and the water bottom.

Abstract: A deployment system and apparatus for running bottomhole assemblies and/or downhole tools in wells, particularly applicable to coiled tubing operations, including pressurized deployment apparatus, a pressure operated connector tool and a multi-functional coiled tubing head.

Abstract: This invention provides oilfield spooled coiled tubing production and completion strings assembled at the surface to include sensors and one or more controlled devices which can be tested from a remote location. The devices may have upsets in the coiled tubing. The strings preferably include conductors and hydraulic lines in the coiled tubing. The conductors provide power and data communication between the sensors, devices and surface instrumentation. The coiled tubing strings are preferably tested at the assembly site and transported to the well site one reels. The coiled tubing strings are inserted and retrieved from the wellbores utilizing an adjustable opening injector head system. This invention also provides method of making electro-coiled-tubing wherein upper and lower adapters are connected to the coiled tubing and tested prior to transporting the string to the wellbore. The string preferably includes pressure barriers at both ends of the string.