Automated flowline leak sealing can be implemented as a flowline sealing tool assembly. A sealing sleeve is configured to be positioned within a flowline with a circumferential leak. The sealing sleeve includes a pair of ends configured to be positioned on either side of the circumferential leak. A pair of sealing elements are attached to the pair of ends, respectively, and are configured to seal the pair of ends to an inner wall of the flowline on either side of the circumferential leak. A deployment tool includes a hollow cylinder configured to be inserted into and retracted from an inner volume defined by the sealing sleeve. The deployment tool is configured to activate the pair of sealing elements to seal the pair of ends to the inner wall of the flowline on either side of the circumferential leak in response to being retracted from the inner volume.

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.

The present disclosure relates to a method for repairing a partially collapsed pipe. The method comprises fitting a mesh stent around the outside of an actuation assembly of a pipe repair apparatus, and positioning the pipe repair apparatus within a portion of the pipe, at least a part of the portion of the pipe being partially collapsed. The method also comprises causing actuation between a retracted configuration and an extended configuration such that the partially collapsed part of the pipe changes from a partially collapsed form towards a non-collapsed form. The method also comprises removing the pipe repair apparatus from the pipe and leaving the mesh stent in the portion of the pipe.

The present disclosure relates to a method for repairing a partially collapsed pipe. The method comprises fitting a mesh stent around the outside of an actuation assembly of a pipe repair apparatus, and positioning the pipe repair apparatus within a portion of the pipe, at least a part of the portion of the pipe being partially collapsed. The method also comprises causing actuation between a retracted configuration and an extended configuration such that the partially collapsed part of the pipe changes from a partially collapsed form towards a non-collapsed form. The method also comprises removing the pipe repair apparatus from the pipe and leaving the mesh stent in the portion of the pipe.

A carrier assembly (10) engages a pipe ring for installing the pipe ring in an existing pipeline to repair the existing pipeline. The carrier assembly (10) has a chassis assembly (12), a support arm assembly (14) and a drive system (16). The chassis assembly (12) has the support arm assembly (14) operably connected thereto. The drive system (14) is operably connected to the chassis assembly (12) wherein the chassis assembly (12) is configured to move along the pipeline. The support arm assembly (14) is configured to engage the pipe ring wherein the support arm assembly (14) is moveable relative to the chassis assembly (12) to displace the pipe ring relative to the chassis assembly (12) for installation in the existing pipeline.

The present invention provides methods and systems for sealing at least one leak in at least one of at least one lateral pipe and a mains pipe, the method including passing a at least one of a pig train and said sealant composition under pressure along at least one of said main pipeline and said at least one lateral pipe such that a portion of the sealant composition enters at least one leakage site to seal and cure the at least one leak.

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

Example aspects of a pipe repair stent, a pipe repair device, and a method for repairing a pipe are disclosed. The pipe repair stent can comprise a sealing layer comprising a flexible and compressible repair material; and a spring, wherein the sealing layer is wrapped around a circumference of the spring; wherein the stent is configurable in an expanded configuration and a compressed configuration, the spring biasing the stent to the expanded configuration.

A tool for intervention on the wall of a fluid pipe, comprising a duct segment through which the fluid is intended to flow when the tool is in the pipe, and at least first and second modules for creating seals between the wall of the pipe and the duct segment, to isolate the fluid circulating in an outer part of a section of the pipe, between the first and second seal creation modules.

The tool includes motorized rollers for moving the tool in the pipe and a module for determining the location of the tool in the pipe.

Example aspects of a stent for repairing a pipe and a method for repairing a pipe are disclosed. The stent for repairing a pipe can comprise a spring comprising a metal wire and defining a tubular structure, the spring defining an outer surface and an inner surface, the inner surface defining a void, an axis extending through the void; and a sealing layer defining a sleeve, the sealing layer wrapped around a circumference of the spring and engaging the outer surface of the spring; the stent configurable in a compressed configuration, wherein the spring is compressed, and an expanded configuration, wherein the spring is expanded