Abstract: The present invention provides a method for sealing a leakage at a remote site in a pipe, the method including introducing a fluid carrier composition including a hardener, a resin and at least one of a multiplicity of plugging devices and a multiplicity of cut fibers into the pipe at the first site under pressure and allowing the fluid carrier to transport the at least one of the multiplicity devices and the multiplicity of fibers to the remote site, wherein the at least of the multiplicity of devices and the multiplicity of the cut fibers penetrates the leakage thereby sealing and curing the leakage.

Abstract: The present invention provides methods and methods for curing a leakage in a pipeline, the method 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.

Abstract: The present invention provides systems, methods and devices for sealing and/or curing a leakage at a remote site in a pipe, the system including a multiplicity of polymeric carrier plugs of a deformable material including pores, at least one sealant composition disposed in the pores; and a carrier liquid composition adapted to transport the multiplicity of polymeric carrier plugs to a site of the leakage, wherein at least some of the multiplicity of polymeric carrier plugs polymeric carrier plugs are adapted to transport the at least one sealant composition from a first site in the carrier liquid composition to a remote site and to seal the leakage at the remote site.

Abstract: 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.

Abstract: The present invention provides systems, methods and devices for sealing and/or curing a leakage at a remote site in a pipe, the system including a multiplicity of polymeric carrier plugs of a deformable material including pores, at least one sealant composition disposed in the pores; and a carrier liquid composition adapted to transport the multiplicity of polymeric carrier plugs to a site of the leakage, wherein at least some of the multiplicity of polymeric carrier plugs polymeric carrier plugs are adapted to transport the at least one sealant composition from a first site in the carrier liquid composition to a remote site and to seal the leakage at the remote site.

Abstract: The present invention provides a method for sealing a leakage at a remote site in a pipe, the method including introducing a fluid carrier composition including a hardener, a resin and at least one of a multiplicity of plugging devices and a multiplicity of cut fibers into the pipe at the first site under pressure and allowing the fluid carrier to transport the at least one of the multiplicity devices and the multiplicity of fibers to the remote site, wherein the at least of the multiplicity of devices and the multiplicity of the cut fibers penetrates the leakage thereby sealing and curing the leakage.

Abstract: The present invention provides methods and methods for curing a leakage in a pipeline, the method 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.

Abstract: 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.

Abstract: The present invention provides methods and methods for curing a leakage in a pipeline, the method 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.

Abstract: 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.

Abstract: The present invention provides leakage plugging devices and methods for sealing a leakage at a remote site in a pipe, the device including a porous carrier plug of a deformable material including pores and at least one sealant composition disposed in the pores, wherein the porous carrier plug is adapted to transport the at least one sealant composition from a first site to a remote site and to plug the leakage at the remote site.

Abstract: 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.

Abstract: The present invention provides methods and methods for curing a leakage in a pipeline, the method 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.

Abstract: The present invention provides leakage plugging devices and methods for sealing a leakage at a remote site in a pipe, the device including a porous carrier plug of a deformable material including pores and at least one sealant composition disposed in the pores, wherein the porous carrier plug is adapted to transport the at least one sealant composition from a first site to a remote site and to plug the leakage at the remote site.

Abstract: The present invention provides pipeline pigs for maintenance of a pipeline, the pig including two adjacent ovular sections generally symmetrically disposed about a vertical axis, a polymeric band disposed along the vertical axis, the band being adapted to reduce a cross section of the pig along the axis and a longitudinal inner support member disposed centrally along the ovular sections and perpendicularly to the vertical axis.

Abstract: A method of repairing leakage in pipelines comprising the steps of forming a first and second openings (14a, 14b) in the pipeline (10) upstream and downstream, respectively, of the leakage location, inserting through the first opening (14a) a first body (C1), filling the space arrear of the first body (C1) with a first viscose sealing material (M1), inserting through the first opening (14a) a second body (C2) arrear of the first viscose sealing material (M1) compressing the first sealing material by applying a pressure against the first and the second bodies (C1, C2) in opposite directions, causing the first and second bodies (C1, C2) and the compressed first sealing material (M1) to move in unison in the direction of the second opening (14b), and retrieving the first and second bodies (C1, C2). Preferably, the method is performed using three bodies (C1, C2, C3) and two sealing materials (M1, M2).

Abstract: A method of repairing leakage in pipelines comprising the steps of forming a first and second openings (14a, 14b) in the pipeline (10) upstream and downstream, respectively, of the leakage location, inserting through the first opening (14a) a first body (C1), filling the space arrear of the first body (C1) with a first viscose sealing material (M1), inserting through the first opening (14a) a second body (C2) arrear of the first viscose sealing material (M1) compressing the first sealing material by applying a pressure against the first and the second bodies (C1, C2) in opposite directions, causing the first and second bodies (C1, C2) and the compressed first sealing material (M1) to move in unison in the direction of the second opening (14b), and retrieving the first and second bodies (C1, C2). Preferably, the method is performed using three bodies (C1, C2, C3) and two sealing materials (M1, M2).

Abstract: A method of repairing leakage in pipelines comprising the steps of forming a first and second openings (14a, 14b) in the pipeline (10) upstream and downstream, respectively, of the leakage location, inserting through the first opening (14a) a first body (C1), filling the space arrear of the first body (C1) with a first viscose sealing material (M1), inserting through the first opening (14a) a second body (C2) arrear of the first viscose sealing material (M1) compressing the first sealing material by applying a pressure against the first and the second bodies (C1, C2) in opposite directions, causing the first and second bodies (C1, C2) and the compressed first sealing material (M1) to move in unison in the direction of the second opening (14b), and retrieving the first and second bodies (C1, C2). Preferably, the method is performed using three bodies (C1, C2, C3) and two sealing materials (M1, M2).

Abstract: A method of repairing leakage in pipelines comprising the steps of forming a first and second openings (14a, 14b) in the pipeline (10) upstream and downstream, respectively, of the leakage location, inserting through the first opening (14a) a first body (C1), filling the space arrear of the first body (C1) with a first viscose sealing material (M1), inserting through the first opening (14a) a second body (C2) arrear of the first viscose sealing material (M1) compressing the first sealing material by applying a pressure against the first and the second bodies (C1, C2) in opposite directions, causing the first and second bodies (C1, C2) and the compressed first sealing material (M1) to move in unison in the direction of the second opening (14b), and retrieving the first and second bodies (C1, C2).

Abstract: A process for improving the thermal insulation properties of articles such as jackets or slabs made of open cells polymeric foam material is disclosed. A viscous solution is prepared, capable of coating the inner walls of the passages interconnecting the cells. Particles of a size less than the minimum diametrical length of the passages are mixed with the solution. The article is soaked with the mixed solution, squeezed and dried, so that the particles dispersed within the passages partly block the flow of air between adjacent cells.