A deformable cleaning element is encased within soluble packaging to maintain deformation. The deformed cleaning element is launched into the bore of a drill pipe/conduit or tubular. Contact with fluids within the bore dissolves the soluble packaging allowing the cleaning element to expand to its original shape.

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.

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.

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.

A hydraulic motor brake for providing load holding torque to a hydraulic motor and comprising a housing, a plate fixedly mounted within the housing, a piston mounted for bi-directional translation relative to the plate along a longitudinal axis, and a plurality of friction-producing members arranged such that the piston and plate at least partially define a brake release chamber and the piston, normally biased in engagement with the friction-producing members to produce load holding torque, translates away from the plate and disengages from the friction-producing members to stop producing load holding torque in response to pressurized hydraulic fluid being received by the brake release chamber. The hydraulic motor brake further comprises a wear plate with the brake housing and wear plate defining bores arranged in coaxial alignment with threaded bores of the hydraulic motor for detachably attaching the hydraulic motor brake to the hydraulic motor as a self-contained unit.

The apparatus comprises a pipe PIG and a gauge. The PIG is for use with a pipeline and is of the type including: a body defining a longitudinal axis; and a pair of seals connected to the body and axially spaced apart from one another by the body. The gauge: has a longitudinal axis; has an outer periphery through which the longitudinal axis of the gauge passes centrally; has a central position relative to the body wherein the longitudinal axis of the body and the longitudinal axis of the gauge are at least substantially coincident; and is mounted to the body for generally radial movement relative to the central position.

The apparatus comprises a pipe PIG and a gauge. The PIG is for use with a pipeline and is of the type including: a body defining a longitudinal axis; and a pair of seals connected to the body and axially spaced apart from one another by the body. The gauge: has a longitudinal axis; has an outer periphery through which the longitudinal axis of the gauge passes centrally; has a central position relative to the body wherein the longitudinal axis of the body and the longitudinal axis of the gauge are at least substantially coincident; and is mounted to the body for generally radial movement relative to the central position.

Pipeline interiors is cleaned by passing through a self-destructive device, which has structure of hybrid physical (thermoreversible) hydrogel of polyelectrolyte and its complexes with salt ions. The melting temperature of the device is lower than the temperature in the pipeline, which ensures its destruction in an event of a stoppage, as well as an cleaning possibility without the use of receiving chambers. An operational time of the device is regulated by structure of material at manufacturing stage and can be additionally increased by cooling before launching, which makes it possible to use a batch of devices of the same composition in pipelines of different lengths. After launching, over time, temperature of the device rises and transition of the material into a viscous-fluid state occurstransformation into a liquid. Highly concentrated hydrogel makes it possible to manufacture devices in the form of a bullet with a central, longitudinal through channel in body, which improves the quality of interior cleaning and guarantees the destruction of the device in the pipeline. The method of device manufacturing includes the preparation of forming mixture by dissolving in some polar solvent under conditions of mixing and heating some electrolyte and polyelectrolyte, as a result of reaction between them formation of complexes, pouring the forming mixture into casting molds, cooling and holding the mixture until the product is obtained.

Use self-destructive pigs in gas fields looks promising in gathering pipelines during period of falling gas production, at underground gas storages, at field of production in offshore areas, water pipelines and distribution networks, also in many field activities with use of piping transport.

Pipeline interiors is cleaned by passing through a self-destructive device, which has structure of hybrid physical (thermoreversible) hydrogel of polyelectrolyte and its complexes with salt ions. The melting temperature of the device is lower than the temperature in the pipeline, which ensures its destruction in an event of a stoppage, as well as an cleaning possibility without the use of receiving chambers. An operational time of the device is regulated by structure of material at manufacturing stage and can be additionally increased by cooling before launching, which makes it possible to use a batch of devices of the same composition in pipelines of different lengths. After launching, over time, temperature of the device rises and transition of the material into a viscous-fluid state occurstransformation into a liquid. Highly concentrated hydrogel makes it possible to manufacture devices in the form of a bullet with a central, longitudinal through channel in body, which improves the quality of interior cleaning and guarantees the destruction of the device in the pipeline. The method of device manufacturing includes the preparation of forming mixture by dissolving in some polar solvent under conditions of mixing and heating some electrolyte and polyelectrolyte, as a result of reaction between them formation of complexes, pouring the forming mixture into casting molds, cooling and holding the mixture until the product is obtained.

Use self-destructive pigs in gas fields looks promising in gathering pipelines during period of falling gas production, at underground gas storages, at field of production in offshore areas, water pipelines and distribution networks, also in many field activities with use of piping transport.