Seal assembly 100, useful for repairing an uncontrolled surface such as pipeline 110, comprises seal 102 which is subjected to pressure and temperature and remains operable under, e.g., subsea conditions. Seal assembly 100 is capable of sealing pipelines of diameters up to 48 inches. Seal assembly 100 is actuated/energized by axially compressing/loading seal assembly 100 between one or more controlled surfaces and an uncontrolled surface and can be used for repairing and providing sealing in flowline or pipelines of either subsea or other petrochemical industries where the pipelines. Spool assembly 700 comprising seal assembly 100 may be used to repair a damaged pipeline section after the damaged section is removed to provide a sealed replacement fluid path for the pipeline.

A pipe-reinforcing implement with excellent workability during attachment to the piping is provided. The reinforcing implement 1 is to be arranged along an outer circumferential face Xb of a metal piping X, in a state surrounding the piping in a circumferential direction, in which creep may occur due to a high temperature and pressure fluid inside, and configured to reinforce creep strength of the piping, the reinforcing implement including a plurality of reinforcing members 11 arranged in the circumferential direction to be joined and a plurality of laminate members 12, 13, 14 overlaid in a radial direction of the piping to configure each of the reinforcing members.

A method and apparatus are disclosed for at least partially repairing a defect in a tubular composite layer. The apparatus comprises a plurality of independently movable abutment elements (3820) each supported in a spaced apart relationship via a respective one of at least one support member (3810). Each abutment element is associated with a respective drive axis along which the abutment elements are movable and the drive axes of all abutment elements extend outwardly from a common centre point.

An example shut-off device includes a valve body to surround a section of a pipe and form a chamber about the section of the pipe. The example shut-off device also includes a first flange bearing on a first side of the chamber. The first flange bearing in a closed position forming a first seal between the pipe and the chamber. The example shut-off device also includes a second flange bearing on a second side of the chamber. the second flange bearing in a closed position forming a second seal between the pipe and the chamber. The example shut-off device also includes a cutting blade in the chamber. The cutting blade tightens against the pipe to cut through the pipe and at least partially seals an opening in the cut pipe. The cutting blade is configured to operate as a gate valve.

A plug (10) for plugging a port (P) in a flow reactor comprises a metal guide (12) having first and second ends (14,16) and a wall (18) surrounding a cylindrical interior volume (20) having an opening (22) at the first end (14); a plug body (40) having a first face (42) and an opposing second face (44) and a side surface (46) and positioned partially within the interior volume (20) with the first face (42) protruding from the opening (22); wherein the plug body (40) comprises a chemically resistant first polymer constituting at least the first face (42) and a thermally resistant second polymer constituting at least the second face (44) and at least a portion of the side surface (46).

Seal assembly 100, useful for repairing an uncontrolled surface such as pipeline 110, comprises seal 102 which is subjected to pressure and temperature and remains operable under, e.g., subsea conditions. Seal assembly 100 is capable of sealing pipelines of diameters up to 48 inches. Seal assembly 100 is actuated/energized by axially compressing/loading seal assembly 100 between one or more controlled surfaces and an uncontrolled surface and can be used for repairing and providing sealing in flowline or pipelines of either subsea or other petrochemical industries where the pipelines. Spool assembly 700 comprising seal assembly 100 may be used to repair a damaged pipeline section after the damaged section is removed to provide a sealed replacement fluid path for the pipeline.

A plug (10) for plugging a port (P) in a flow reactor comprises a metal guide (12) having first and second ends (14,16) and a wall (18) surrounding a cylindrical interior volume (20) having an opening (22) at the first end (14); a plug body (40) having a first face (42) and an opposing second face (44) and a side surface (46) and positioned partially within the interior volume (20) with the first face (42) protruding from the opening (22); wherein the plug body (40) comprises a chemically resistant first polymer constituting at least the first face (42) and a thermally resistant second polymer constituting at least the second face (44) and at least a portion of the side surface (46).

A method and apparatus are disclosed for at least partially repairing a defect in a tubular composite layer. The apparatus comprises a plurality of independently movable abutment elements (3820) each supported in a spaced apart relationship via a respective one of at least one support member (3810). Each abutment element is associated with a respective drive axis along which the abutment elements are movable and the drive axes of all abutment elements extend outwardly from a common centre point.

The present invention provides an adjustable clamp apparatus having curved arms which pivot/articulate relative to each other. The distance between pivot points can be adjusted via specially configured couplers having nuts and threaded rods. The curved arms can be locked together with a rod placed in a slot, and then squeezed by rotation of threaded rod. In the interior of the curved arms there can be a plurality of projections or contact points. A strap can be connected to a selected adjustable clamp (e.g., by a pair of padeyes) and used to raise and lower the clamp. When being lowered onto a pipe to be repaired, the curved arms can be open wide and when their upper portions make contact with the pipe to be repaired, this contact will tend to cause arms to close around the pipe relative to each other. Once clamped against the pipe with the clamps, the repair members can be welded together.

A device for repairing pipelines comprises a sleeve adhered to a pipeline, said sleeve being made of a cured composite material in the form of a truncated cone with a cylindrical passage passing along an axis, the diameter of the passage being equal to the outer diameter of the pipeline being repaired, and a side wall, the inner surface of the side wall corresponding to the outer surface of the sleeve, wherein the side wall is made of a cured composite material. The invention provides improvement of performance reliability of the repaired pipeline.