Abstract: A substantially formaldehyde-free duct liner is manufactured from at least one fiber component that may be mineral or organic fibers blended with at least one non-liquid substantially formaldehyde-free binder. The fiber component may comprise virgin textile glass fibers, virgin rotary glass fibers, organic fibers, or natural fibers. The non-liquid substantially formaldehyde-free binder may be plastic-containing bonding fibers, a powder binder, or a mixture thereof.

Abstract: The invention relates to a method for lining a high pressure pipe with a tube made from interlocking, high-tensile high performance fibers, with a plastic coating applied thereto, whereby the high performance fibers are arranged in an interwoven structure and introduced into the pipe in a state of mobility relative to each other. The introduced meshing is then pressed against the inner wall of the pipe by altering the geometrical arrangement of the high performance fibers with relation to each other and then fixed by the mutual arrangement of the high performance fibers adopted after the laying thereof.

Abstract: An apparatus for sealing a junction where a branch line joins a header having a packer. The packer has an inflatable packer sleeve for the header and an inflatable side sleeve for the branch line that protrudes from said header in the inflated state. A tunnel passes from an end of the packer through an interior space to a collar, in which a feed line for introducing sealing material runs to the junction at the collar. In a deflated state, the side sleeve is inverted in the interior space of the packer sleeve. When the packer is placed, the packer sleeve to which compressed air is admitted comes to rest against the inside wall of the header and, subsequently, the side sleeve moves into the branch line by inversion.

Abstract: An apparatus for sealing perforations, holes, cracks or the like in a tube or pipe and particularly in an oil well casing. The apparatus including a delivery tool for delivery of a coiled patch composed of spring-like material to the location of a damaged portion within a pipe. The patch consisting of a flat sheet of spring-like material where the length and width of the patch are comparatively large with respect to the thickness of the patch. The delivery tool comprising a hydraulicly activated plunger assembly and barrel. Prior to use, the patch is wound into the form of a coiled cylinder by means of a rolling tool and is loaded into the barrel of the delivery tool. To deploy the patch, hydraulic pressure is applied to the plunger assembly causing the plunger to move downwardly within the barrel and push the patch out of the barrel. Upon deployment, the patch unwinds within the pipe or tube and seals the damaged area against the infiltration or exfiltration of fluids or gasses.

Abstract: The apparatus and method for eliminating ground water infiltration while stabilizing the ground and repairing underground pipe/conduit and connections is taught in this art. The steps are to first inject, under pressure, expandable structural foam in the space adjacent and outside the pipe while blocking any infiltration of the foam into the interior of the pipe, conduit or connection. Concurrently or separately the inside diameter of the pipe is receiving a structural repair. The result is stabilized ground, elimination of ground water infiltration and repair of the host pipe conduit or connection.

Abstract: A process for lining an existing pipeline or conduit with a flexible resin impregnated cured in place liner by pulling in the liner and inflating an eversion bladder with air and curing the liner with flow-through steam without loss of pressure is provided. The bladder is stored in a pressure bladder canister coupled to a pressurized downtube and eversion elbow. The bladder is everted by introducing pressurized air into the canister As the bladder reaches the distal manhole, it enters a receiving canister where it is punctured while maintaining air pressure within the bladder a pinch valve between the downtube and elbow isolates the inverted bladder so that steam can be introduced into the bladder to cure the resin and exhaust through the receiving canister. The bladder is then removed and lateral service reinstated.

Abstract: A water supply pipe has a tubular liner of a polyolefin elastomer/Plastomer installed therein. The polyolefin elastomer/plastomer includes a substantially linear ethylene inter-polymer with a narrow molecular weight distribution from 1.8 to 2.2.

Abstract: A cable pulling machine of the invention includes a frame, a mechanical linkage including first and second links having first and second cable gripping shoes disposed thereon respectively in opposed positions, a latching cylinder actuable to cause the mechanical linkage to pivot on multiple axes to bring the shoes into engagement with a cable disposed therebetween, a main cylinder having one end mounted on the frame and actuable to move the linkage in a manner effective to pull the cable in a pulling stroke once the latching cylinder has brought the shoes into engagement with the cable, and suitable means for extending and retracting the main and latching cylinders. The machine may also include suitable means for holding the cable in tension between pulling strokes, such as a pivoting wedge mechanism as described hereafter.

Abstract: An hydraulic control arrangement (66) in association with a pipe relining machine Includes fluid pressure supply and return lines (32, 33), a motor controller (80) to control a motor (67) and a radial position controller. The radial position controller supplies fluid under pressure to a radial positioning arrangement (46) to set diameter of a relined pipe. The radial position controller has a first normally closed valve (83) supplying fluid under pressure to the radial positioning arrangement (46) and a second normally open valve (84) allowing fluid to be withdrawn from the radial positioning arrangement (46). The arrangement (66) allows the pipe relining machine to be withdrawn in the event of a failure.

Abstract: An apparatus and method for lining sewer pipes that utilize an adjustable form configured to conform to the shape and dimensions of the interior of a man-entry sized pipe line. The adjustable form can be used to position a sheet of liner material immediately adjacent the inner sewer walls. An air cushion system is utilized to reduce friction and drag between the sheet of liner material and form so that the liner sheet can be easily adjusted prior to bonding to the inner walls of the pipe line.

Abstract: The present invention is an improved method for installing a liner to repair a pipeline. The method involves placing a flexible lining hose that is coated with a thermosetting resin in the pipeline. A thermosetting resin is also applied to the interior walls of the pipeline. A calibration hose is introduced into the lining hose and pressurized fluid is injected therein. The fluid presses the lining hose against the interior surface of the pipeline and cures the first and second thermosetting resins. The curing of the resins bonds the lining hose to the pipeline to form a rigid monolithic composite structure having high mechanical strength.

Abstract: An impactor for use with a directional boring machine having a drill string connectable to the impactor for pulling the impactor through an existing pipeline uses rotation of the drill string to drive an internal striker. The internal striker delivers impacts in the pulling direction to an impactor housing as the impactor housing tows a replacement pipe behind it. The impactor housing is free to move axially in response to impacts from the striker over a limited distance in the pulling direction independently of the replacement pipe and drill string.

Abstract: A method of repairing a leak at a branch pipe location in a manner that it is not necessary to drain the water or the liquid from the main pipe at which the repair is being made. The end of the existing branch pipe is removed from a connector at the main pipe, and a temporary plug with an elongate handle is used to branch the connector opening. With the opening remaining closed, an intermediate connector is placed over the elongate handle and welded to the connector, after which the plug member is taken from the opening and a permanent plug put in the upper end of the intermediate connector.

Abstract: A device for repairing underground sewers, pipe or the like provided a cylindrical hollow body, which has an elastically expandable casing acting as an outer wall.

Abstract: A pipe or liner for use in the oil and gas industry that comprises a melt-mixed bend of polyamide and incompatible polyolefin and a compatibilizing agent where the polyamide exists as a discontinuous phase that is dispersed in a polyolefin matrix. The pipe or liner has enhanced resistance to the permeation of hydrocarbons relative to polyethylene.

Abstract: An auxiliary device (100) is provided for repairing a pipeline and sealing small damages (5) in a wall (4) of a pipeline. A working space (8) is created between the interior of the pipeline (93) and the outer circumference of the base element (22) when the auxiliary device (100) for repairing a pipeline is pushed into a pipeline. The working space (8) can be sealed in the axial direction of the pipeline (3) and in a jointing manner by way of the expanding sealing collars (24,25). The auxiliary device (100) is provided with a transport module (40) that is articulated to the sealing module (20). The device can be transported through the fluid flow by means of the transport module (40).

Abstract: A collapse tolerant flexible pipe and method of manufacturing same according to which an inner tubular layer is provided within an outer tubular layer in a coaxial relationship thereto. The inner layer maintains the maximum allowable strain on the outer layer below a value that will cause damage to the outer layer when the pipe collapses.

Abstract: Abrasion resistant pipes of this invention comprise a structural wall formed from a filament wound fiberglass-reinforced material, and an elastomeric abrasion resistant material disposed along the inside and/or outside surface of such pipe. In a preferred embodiment, the structural pipe wall is formed from a filament wound fiberglass-reinforced epoxy resin material, and the abrasion resistant material is formed from a polyurea elastomer. Abrasion resistant pipes of this invention are manufactured using existing filament winding processes by first coating a mandrel with the elastomeric abrasion resistant material, and than winding the resin impregnated filament therearound. Pipes prepared according to principles of this invention have improved properties of toughness, temperature resistance, chemical resistance, and abrasion resistance when compared to conventional fiberglass-reinforced pipes that either have no protective liner or have liners formed from other elastomeric materials.

Abstract: A method of lining a main pipe and one or more service pipes extending therefrom is disclosed. The method comprises lining a main pipe with a liner of plastics material, inserting a liner of plastics material into a service pipe from an end of the service pipe remote form the main pipe and penetrating the wall of the main pipe liner to bring the main pipe into fluid communication with the service pipe. The wall of the main pipe liner is preferably penetrated by providing a pig or robot inside the lined main pipe, locating the position at which a service pipe is joined to the main pipe and using the pig or robot to cut, drill or pierce through the wall of the main pipe liner. A further lining portion may be provided along at least a part of any distance between the main pipe liner and the liner inserted into the service pipe. The further lining portion may be an insert of plastics material or may be provided by sealant with a channel formed therein or it may be formed by a combination of the two.

Abstract: This invention provides stretch-resistant liners for lining pipes, pipes lined with stretch-resistant liners, and methods for lining pipes with stretch-resistant liners. The liners are made from a layer of stretch-resistant woven material, which may be a scrim, sandwiched between two layers of non-woven resin-impregnated material to form a laminate structure which is rolled into a tube to provide a liner having concentric sleeves.

Abstract: The inventions concerns to a bundle (1) of tubes for the laying of tubes (2) by means of a trenchless laying according to the fluid-assisted drilling method, in which in a first drilling process a drilling channel (9) is generated and during the retracting movement of the boring-flushing head (5) this drilling channel (9) is expanded and in this process the bundle (1) of tubes is retracted into the drilling channel (9). Such a bundle (1) of tubes stands out by that the bundle (1) of tubes is formed by a number of single tubes (2) which are ordered in distance to each other by means of flanges (3) distantly arranged at the tubes (2) in lengthwise direction (15) of the tubes (2).

Abstract: The present invention relates to apparatus for use in venting pipelines that have a plastic lining such as these used for transporting hydrocarbon fluids. A pipeline assembly comprises a pipeline (2), a corrosion resistance liner (3), and a micro-annulus (4) located between said pipeline and liner. The pipeline assembly also comprises a venting means (5) adapted for fitment in or through the corrosion resistance liner (3), wherein the venting means (5) allows gas to flow from the micro-annulus into the centre of the pipeline assembly but not in the opposing direction.

Abstract: A breach filling apparatus for plugging a hole in a wall that includes an air supply assembly, a converting assembly connected to the air supply assembly for converting air pressure to lineal movement, a component storage assembly for storing fluid components of a foaming material therein and expelling the components upon lineal movement by the converting assembly, and a plugging assembly for plugging a hole through a wall structure. The plugging assembly comprises an inflatable flexible bladder having an outer wall defining an interior space for receiving the fluid components and expanding in size from a collapsed condition to an expanded condition. The plugging assembly has a mixing tube in fluid communication with the storage assembly and extends into the interior space of the flexible bladder with a plurality of apertures for expelling the components into the interior space of the flexible bladder.

Abstract: The invention relates to a device for replacing lines without excavation, comprising an annular overdrilling head and a drive for rotating a front module arranged on the overdrilling head.

Abstract: A process for lining an existing pipeline or conduit with a flexible resin impregnated cured in place liner by pulling in the liner and inflating an eversion bladder with air and curing the liner with flow-through steam without loss of pressure is provided. The liner includes a resin absorbent material in tubular form with an impermeable membrane forming an outer layer. The absorbent material is saturated with a thermoset resin and pulled into the existing conduit. A flexible inflation bladder is passed through a gland mounted on an eversion apparatus and everted into the collapsed liner. The gland is pressurized to isolate the eversion bladder. As the bladder reaches the distal manhole, it enters a receiving canister where it is punctured while maintaining air pressure within the bladder. Steam is then introduced into the bladder to cure the resin and is exhausted through the receiving canister. The bladder is then removed and lateral service reinstated.

Abstract: A reinforced liner for cured in place pipe rehabilitation of an existing pipeline having a plurality of high-strength low-elongation fiber bundles disposed circumferentially around the tubular liner at both inner and outer surfaces of a resin absorbent layer of the liner is provided. The bundles of reinforcing fibers are continuous lengths of high modulus fibers laid circumferentially with the ability to stretch to accommodate variations in host pipe diameter. The fibers on the inner surface are secured to a porous scrim to form an inner tubular reinforcing layer. A resin absorbent layer is formed into a tube about the inner layer. An outer layer of bundles of reinforcing fiber are formed into a tube about the absorbent layer. An outer impermeable tubular layer is wrapped around the inner layers. The reinforcing layer may include longitudinal reinforcing fiber in either or both reinforcing layers to increase the longitudinal strength of the liner.

Abstract: A pipe liner bag everting nozzle is provided for allowing an operator to freely access a manhole during a lining operation. A pipe liner bag everting nozzle comprises a guide tube fixing end for fixing one end of a guide tube, and a pipe liner bag fixing end for fixing a folded end of an uneverted pipe liner bag passed through the guide tube, wherein the guide tube fixing end has a diameter smaller than a diameter of the pipe liner bag fixing end. Since a guide tube having a smaller diameter than that of a pipe line to be repaired (or the pipe liner bag) can be used, a sufficient gap is formed between the guide tube and the manhole, thereby allowing the operator to freely access the manhole during the lining operation for inspection and confirmation of a lining situation.

Abstract: A wellbore casing formed by extruding a tubular liner off of a mandrel. The tubular liner and mandrel are positioned within a new section of a wellbore with the tubular liner in an overlapping relationship with an existing casing. A hardenable fluidic material is injected into the new section of the wellbore below the level of the mandrel and into the annular region between the tubular liner and the new section of the wellbore. The inner and outer regions of the tubular liner are then fluidicly isolated. A non hardenable fluidic material is then injected into a portion of an interior region of the tubular liner to pressurize the portion of the interior region of the tubular liner below the mandrel. The tubular liner is then extruded off of the mandrel.

Abstract: A structural lining system and a method of applying the system to the interior surface of a pipe. First, a layer of adhesive is sprayed onto the interior surface of a previously cleaned pipe. Next, strips of previously coiled unidirectional carbon fiber material are allowed to uncoil within the pipe so that side edges of the strips abut the side edges of adjacent strips and the junction where the ends of each strip come together are staggered around the pipe so that the junction for adjacent strips do not align longitudinally. If ends of the strips overlap, additional adhesive is applied between the overlapping portions. A final epoxy coating is sprayed over the strips, forming an internal liner for the pipe.

Abstract: An improved apparatus for repairing a pipeline by the insertion of a resin-impregnated tubular liner is disclosed wherein the improvement resides in an end cap that is adhesively attached to one end of the liner, the end cap having a pull tab formed thereon and a rope attached thereto. Once the liner has been inverted into the pipeline being repaired and the resin-impregnated tubular liner has been disposed into intimate contact with the interior surface of the pipeline and allowed to cure, the end cap is easily stripped from the liner by pulling on the rope.

Abstract: A method and device is provided for repairing a plumbing waste pipe without having to remove a failed portion of the waste pipe. A flexible sleeve with a flange is fit inside the failed waste pipe such that the outer circumference of the sleeve is in radial contact with the inner circumference of the failed pipe and the body of the sleeve extends through the failed waste pipe beyond the point of failure. The flange can be fastened between the plumbing fixture and the failed waste pipe to securely maintain the flexible sleeve within the failed pipe. Water and waste material will enter the sleeve through the flange and pass through the interior of the sleeve beyond the point of failure in the waste pipe. The water and waste can then be discharged into the waste pipe to be carried along its normal route.

Abstract: A lubricant coating (240) for expandable tubulars (215). The interior surfaces of the expandable tubulars are coated with the lubricant coating (240). The expandable tubulars (215) are then placed within a preexisting structure (205). The expandable tubulars are then radially expanded into contact with the preexisting structure.

Abstract: An assembly for introducing a pipe liner into a branch line includes a launcher defining a passageway through which a resin impregnated pipe liner and bladder tube assembly passes. An inflatable member mounted to the launcher assembly is actuatable between an inflatable condition and a deflated condition. The pipe liner and bladder tube are secured in place by expanding the inflatable member outward against the inner surface of the branch line. Air pressure drives the bladder tube and pipe liner into the branch line. The bladder tube remains in place until the pipe liner hardens.

Abstract: There is disclosed a method of lining a drilled bore (10) and bore-lining tubing (12).

Abstract: An installation assembly for installing a liner in a pipeline comprises an inner bladder having an installation end and a retrieval end. An outer bladder surrounds the inner bladder. The ends of the inner and outer bladders are coupled together adjacent the installation end. The inner bladder is coupled to an air source at a retrieval end and the outer bladder adjacent the retrieval end is free. Following installation and curing of the liner, the bladder assembly is retrieved by pulling on the retrieval end of the inner bladder, and upon retrieval, the outer bladder is inverted.

Abstract: A pipe for the transport of fluids, which pipe is internally provided with a liner, wherein the liner is provided with at least one non-return valve arranged in the liner wall, wherein the non-return valve has an inlet end arranged near the outer surface of the liner wall and an outlet end arranged near the inner surface of the liner wall.

Abstract: An apparatus and method for sealing an underground junction between a lateral service line and a main pipeline from the inside-out. One embodiment provides a substantially rigid patching apparatus which may be positioned and installed with a robotic device within a main pipeline. The patching apparatus has a flange shaped to fit the internal diameter of the main pipeline and a tubular stem or sleeve which penetrates into the lateral service line. The patching apparatus contains an interconnection substrate such as felt, sponge or other similar material. The interconnection substrate may be impregnated with a bonding agent which sealingly interconnects the patching apparatus to the main pipeline and lateral service line, and may be heated by utilizing a heating element within a support cage, thus reducing the time required for curing.

Abstract: A pressure bag is used to line a branch pipe, wherein a heat medium hose can be securely pulled with an everting force of a branch pipe liner bag to stably line the branch pipe. The pressure bag has one end closed by an end collar for containing the branch pipe liner bag. The end collar is formed with a hot water supply port and a hot water discharge port, as well as a sealing member for slidably supporting a pull rope or a belt extending therethrough in an air-tight seal. A hot water supply pipe in communication with the hot water supply port is disposed within the end collar, and a flexible hot water hose is attached to the hot water supply pipe. The hot water hose is folded and contained in the pressure bag. A head collar comprising a head collar push-up lever is attached to the end of the pressure bag opposite to the end to which the end collar is attached.

Abstract: A process for lining an existing pipeline or conduit with a flexible resin impregnated cured in place liner by pulling in the liner and inflating it with a reusable endless inflation bladder is provided. The liner includes a resin absorbent material in tubular form with an impermeable membrane forming an outer layer. The absorbent material is saturated with a thermoset resin and pulled into the existing conduit. A flexible inflation bladder maintained on a inflation bladder spool is everted into the collapse liner which is then forced against the interior surfaces of the existing conduit, allow to cure and the bladder removed and rewound on the spool. When the everting and curing fluid is hot water, the hot water is removed and stored for reuse as the inflation bladder is withdrawn.

Abstract: In lining work in which a lining pipe R formed by spirally winding a strip-like member 500 consisting of an elongated sheet-form body is left in place inside a tubular culvert P, and a new lining pipe is additionally formed in front of this lining pipe that has been left in place, a lining apparatus S which has a flexible forming frame 1 consisting of link bodies is used. The strip-like member 500 is wound around the forming frame 1 by means of a joining mechanism part 7 attached to the forming frame 1, and a lining pipe R is formed while being forcibly folded inward utilizing the flexibility of the forming frame 1; at the same time, a back-filling material is injected into the inward-folded part. The inward-folded part later returns to its original state. Alternatively, the diameter of a small-diameter lining pipe R formed by winding around the forming frame 201 or 401 is expanded, and lining is performed with the back-filling material injected during this diameter expansion process.

Abstract: A process for lining an existing pipeline or conduit with a flexible resin impregnated cured in place liner by pulling in the liner and inflating an eversion bladder with air and curing the liner with flow-through steam without loss of pressure is provided. The bladder is stored in a pressure bladder canister coupled to a pressurized downtube and eversion elbow. The bladder is everted by introducing pressurized air into the canister As the bladder reaches the distal manhole, it enters a receiving canister where it is punctured while maintaining air pressure within the bladder a pinch valve between the downtube and elbow isolates the inverted bladder so that steam can be introduced into the bladder to cure the resin and exhaust through the receiving canister. The bladder is then removed and lateral service reinstated.

Abstract: The present disclosure is directed to methods and systems for pipeline rehabilitation. The methods and systems disclosed herein permit the rehabilitation of long lengths of previously installed pipe and minimize the need for creating multiple access points to the pipeline. The disclosed systems and methods are particularly suited for rehabilitating buried and undersea pipelines or pipelines installed in areas of restricted access.

Abstract: Inversion liners are provided which in a first embodiment include first and second flexible fabric layers joined to first and second glass fiber containing layers and joined in tubular form, whereby the first and second flexible fabric layers face one another. The second glass fiber containing layer further is bonded to a thin, third flexible fabric layer. A substantially fluid impermeable layer is applied to the opposite side of the thin, third flexible fabric layer.

Abstract: Inversion liners are provided which in a first embodiment include first and second flexible fabric layers separated by one or more glass fiber containing layers and joined in tubular form. The second flexible fabric layer further is bonded to a third flexible fabric layer comprising a substantially fluid impermeable layer. An invertible glass-faced liner is also provided by this invention which includes a glass facing on one side and a substantially fluid impermeable layer on the other. The substantially fluid impermeable layer is joined to a flexible fabric layer which is preferably heat bonded to a thin veil joined to a second glass containing layer of this liner embodiment. The inversion liners of this invention can be built-up in multiple layers or blocks to meet end-use design demands while still providing flexural moduli in excess of 500 ksi, preferably about 700-800 ksi.

Abstract: This invention provides stretch-resistant liners for lining pipes, pipes lined with stretch-resistant liners, and methods for lining pipes with stretch-resistant liners. The liners are made from a layer of stretch-resistant woven material, which may be a scrim, sandwiched between two layers of non-woven resin-impregnated material to form a laminate structure which is rolled into a tube to provide a liner having concentric sleeves.

Abstract: A “chemical heater” in the form of a cartridge containing an exothermic agent such as sodium hydroxide (caustic) soda, or the like, which, when infused into water, releases heat in the form of an exothermic reaction. In the preferred embodiment of the invention, a cartridge is provided which contains the exothermic material. Water or the like is then directed through said cartridge so that the exothermic material dissolves, providing a solution of water infused with the exothermic material. The solution is heated by virtue of the exothermic reaction, said solution passing out of the cartridge and into a bladder located in a pipe, filling same. Situated about the bladder is a patch or sleeve of material including heat cured resin, which is urged to line the pipe by virtue of the bladder inflating, while simultaneously heated to cure same by virtue of the heated solution.

Abstract: A liner for a branch pipe of an old repaired pipe lined with a polyethylene liner, the liner comprising: a branch pipe portion made of a tubular body, the branch pipe portion being insertable into an existing branch pipe branching from the old repaired pipe; a welding plate provided at a first end of the branch pipe portion, the welding plate having a top surface to be welded to an inner surface of the polyethylene liner and being formed to have a curvature corresponding the an inner surface of the old repaired pipe; at least one O-ring attached tightly to an outer circumferential surface of a second end of the branch pipe portion; an expandable pressing ring for pressing against an inner surface portion of the second end of the branch pipe portion adjacent to the O-ring to force the O-ring to form a watertight seal against the existing branch pipe; an expanding key for holding the pressing ring in an expanded position to maintain the pressure of the pressing ring against the second end of the branch pipe por

Abstract: Device for use in rehabilitation of water supply pipes includes a tubular liner (10) which is deployed through a pipe (11) for example by a line attached to a messenger pig which is propelled through the pipe. The liner (10) has a multi-lobed pleated cross-section, and is of a polyolefin elastomer material, e,g, a substantially linear ethylene inter-polymer. The liner is extruded and die drawn during extrusion to produce a reduced diameter highly oriented structure.

Abstract: A method of selectively repairing the lining of a lined pipeline utilising a conveyance adapted to be receivable within and to travel through the pipeline. The conveyance consists of a plurality of vehicles comprising an inspection means, an excising means, a debris removal means and an application means. The method comprises: an identification step whereby the conveyance travels along the pipeline inspecting and locating damaged portions of the lining; an excising step whereby damaged portions of the lining identified from the inspection step are removed by the conveyance; a debris removal step whereby the conveyance travels along the pipeline to remove debris and/or water left in the pipeline by the excising step; and an application step whereby the conveyance travels along the pipeline and applies a fresh lining composition to replace the excised portions of lining removed by the excising step.

Abstract: A method for repairing a leak in a pipe joint, the joint including a gasket. The method requires a passage to be formed through the wall of the first pipe. A space is then formed in the gasket communicating with the passage. After this, a sealant is injected through the passage into the space thus allowing the fluid to repair the leak.