A method of inhibiting leakage of a fluid through a defect (4) in a wall of a pipe (2), comprising the steps: introducing a loss control medium (30) into a first portion of a pipe (2); conveying the loss control medium (30) along the pipe from the first portion to a second portion of the pipe, wherein the second portion is embedded in a porous medium and has a defect (4) through which fluid conveyed by the pipe during normal use leaks into the porous medium; and applying a pressure to the loss control medium (30) such that at least a portion of the loss control medium (30) is expelled from the pipe through the defect (4) into the porous medium thereby causing the loss control medium to accumulate within the porous medium in the vicinity of the defect which inhibits flow of a liquid through the defect into the porous medium.

A method of inhibiting leakage of a fluid through a defect (4) in a wall of a pipe (2), comprising the steps: introducing a loss control medium (30) into a first portion of a pipe (2); conveying the loss control medium (30) along the pipe from the first portion to a second portion of the pipe, wherein the second portion is embedded in a porous medium and has a defect (4) through which fluid conveyed by the pipe during normal use leaks into the porous medium; and applying a pressure to the loss control medium (30) such that at least a portion of the loss control medium (30) is expelled from the pipe through the defect (4) into the porous medium thereby causing the loss control medium to accumulate within the porous medium in the vicinity of the defect which inhibits flow of a liquid through the defect into the porous medium.

The present invention provides systems and methods for curing a leakage in a pipeline, the system including at least one gel pig and at least one sealant composition; wherein the at least one gel pig and the at least one sealant composition form a pig train, adapted to move along the pipeline to a region of the leakage and to seal the leakage.

The present invention provides systems and methods for curing a leakage in a pipeline, the system including at least one gel pig and at least one sealant composition; wherein the at least one gel pig and the at least one sealant composition form a pig train, adapted to move along the pipeline to a region of the leakage and to seal the leakage.

A device and method for sealing or repairing a leaking and/or damaged location on an inner wall of a pipe, includes a volume-expandable bellow body configured to expand, with an increase in its volume, when the bellows body is positioned in the region of the leaking and/or damaged location in the interior of the pipe, with infiltration of a fluid, into a bellows-body interior. A carrier portion is formed on an outer surface of the bellows body, a resinated sealing mat being arrangeable on the carrier portion, the sealing mat being fastenable to the inner wall of the pipe, and being able to cure, in an expanded state of the bellows body in the region of the leaking and/or damaged location by being pressed against said-the inner wall. The device can also be used reliably in long-term use, such that the carrier portion is formed from Para rubber or silicone.

A device and method for sealing or repairing a leaking and/or damaged location on an inner wall of a pipe, includes a volume-expandable bellow body configured to expand, with an increase in its volume, when the bellows body is positioned in the region of the leaking and/or damaged location in the interior of the pipe, with infiltration of a fluid, into a bellows-body interior. A carrier portion is formed on an outer surface of the bellows body, a resinated sealing mat being arrangeable on the carrier portion, the sealing mat being fastenable to the inner wall of the pipe, and being able to cure, in an expanded state of the bellows body in the region of the leaking and/or damaged location by being pressed against said-the inner wall. The device can also be used reliably in long-term use, such that the carrier portion is formed from Para rubber or silicone.

A grouting material delivery and application system for coating the exterior of a collapsed liner with an even distribution of grouting material prior to insertion into a damaged conduit. The apparatus includes a wetout funnel for receiving grouting material to evenly coat the exterior of the liner. The wetout funnel includes opposite walls forming a v-shape with a slot at the bottom of the v-shape and a squeegee disposed at the slot for controlling the coating of grouting material for a uniform covering on the liner as it passes through the wetout funnel. A first ejector pipe having an inflow end and an outflow end for receiving and dispensing grouting material to coat one half of the exterior of the liner. A second ejector pipe having an inflow end and an outflow end for receiving and dispensing grouting material to coat the opposite half of the exterior of the liner.

A pipe repair device includes a body defining a first end and a second end opposite the first end; a stent configurable in a compressed configuration and an expanded configuration, the stent mounted to the body in the compressed configuration; and a locomotion subsystem configured to drive the pipe repair device through a pipe, the locomotion subsystem comprising a steering rod extending from the first end of the body and configured to engage an inner surface of the pipe.

A pipe repair device includes a body defining a first end and a second end opposite the first end; a stent configurable in a compressed configuration and an expanded configuration, the stent mounted to the body in the compressed configuration; and a locomotion subsystem configured to drive the pipe repair device through a pipe, the locomotion subsystem comprising a steering rod extending from the first end of the body and configured to engage an inner surface of the pipe.

A device for applying a layer of material within a thin-walled pressure vessel may include one or more maneuvering actuators configured to direct the device within the thin-walled pressure vessel, an applicator operatively coupled to the one or more maneuvering actuators, and a controller operatively coupled to the one or more maneuvering actuators and the applicator, the controller is configured to control the one or more maneuvering actuators and the applicator. The applicator may include an expander configured to apply pressure along a portion of an inner wall of the thin-walled pressure vessel, a receptacle configured to secure the material to the device and position the material along the inner wall of the thin-walled pressure vessel, and a bonder configured to bond the material along the inner wall of the thin-walled pressure vessel.