A modular decoking assembly with a transportable container and multiple prefabricated modules that can be installed within the transportable container, and methods of forming a decoking unit with a plurality of prefabricated modules within a container.

There is provided an apparatus for controlling a run of a pig (20) through a tubular object (22), the apparatus comprising: a propulsion device (32) for propelling the pig (20) inside the tubular object (22); a recording device (30) configured to, in real-time, record operating steps and operating parameters of a human-controlled reference run of the pig (20) through the tubular object (22); and a controller (30) programmed to selectively carry out an automatic control mode in which the controller (30) automatically controls a subsequent run of the pig (20) through the tubular object (22) in accordance with the recorded operating steps and operating parameters of the reference run, wherein the automatic control mode includes control of the propulsion device (32) to propel the pig (20) through the tubular object (22).

There is provided an apparatus for controlling a run of a pig (20) through a tubular object (22), the apparatus comprising: a propulsion device (32) for propelling the pig (20) inside the tubular object (22); a recording device (30) configured to, in real-time, record operating steps and operating parameters of a human-controlled reference run of the pig (20) through the tubular object (22); and a controller (30) programmed to selectively carry out an automatic control mode in which the controller (30) automatically controls a subsequent run of the pig (20) through the tubular object (22) in accordance with the recorded operating steps and operating parameters of the reference run, wherein the automatic control mode includes control of the propulsion device (32) to propel the pig (20) through the tubular object (22).

In a method of joining a structure to a water-filled pipeline aboard a reel-lay vessel, a trailing end portion of the pipeline is suspended upright on a reel-lay tower. Water is drained from the trailing end portion while being retained in an inclined portion of the pipeline extending from the tower to a reel of the vessel and in a spooled portion of the pipeline coiled on the reel. The structure is joined to a trailing end of the pipeline after inserting a pig into the trailing end portion through the trailing end. Pumping additional water into a leading end of the pipeline on the reel propels the pig from the trailing end portion into a conduit of the structure while flooding the trailing end portion. This expels air through a port of the structure that was trapped in the trailing end portion between the pig and the structure.

In a method of joining a structure to a water-filled pipeline aboard a reel-lay vessel, a trailing end portion of the pipeline is suspended upright on a reel-lay tower. Water is drained from the trailing end portion while being retained in an inclined portion of the pipeline extending from the tower to a reel of the vessel and in a spooled portion of the pipeline coiled on the reel. The structure is joined to a trailing end of the pipeline after inserting a pig into the trailing end portion through the trailing end. Pumping additional water into a leading end of the pipeline on the reel propels the pig from the trailing end portion into a conduit of the structure while flooding the trailing end portion. This expels air through a port of the structure that was trapped in the trailing end portion between the pig and the structure.

A self-powered pipeline pig includes a housing defining a trailing end, a leading end and a longitudinal axis. The plurality of internal flow channels extend longitudinally through the housing between the trailing end and the leading end. A power generation device is disposed in a first one of the plurality of internal flow channels. The power generation device generates electric power from a pipeline fluid flowing through the first flow channel during a pigging operation. A battery is disposed on the self-powered pipeline pig to provide electric power during the pigging operation to operate one or more components installed on the self-powered pipeline pig. The power generation device is electrically coupled to the battery to recharge the battery using the generated electric power.

A self-powered pipeline pig includes a housing defining a trailing end, a leading end and a longitudinal axis. The plurality of internal flow channels extend longitudinally through the housing between the trailing end and the leading end. A power generation device is disposed in a first one of the plurality of internal flow channels. The power generation device generates electric power from a pipeline fluid flowing through the first flow channel during a pigging operation. A battery is disposed on the self-powered pipeline pig to provide electric power during the pigging operation to operate one or more components installed on the self-powered pipeline pig. The power generation device is electrically coupled to the battery to recharge the battery using the generated electric power.

A system for applying a chemical agent within a pipe includes a skid assembly, moveable longitudinally within the pipe. The skid assembly has a bottom positionable on a bottom, internal portion of the pipe. A delivery nozzle is carried by the skid assembly and is coupleable to a chemical agent supply. A dispensing tip delivers a controlled stream of chemical agent within the pipe toward an internal surface of the pipe. The tip is held at or above a surface of fluid carried by the pipe while at least a portion of the skid assembly is positioned below the fluid surface. The dispensing tip is limited from delivering the chemical agent downwardly toward the bottom of the skid assembly such that the dispensing tip delivers the controlled stream of chemical agent upwardly away from the bottom surface of the pipe and upwardly away from the fluid surface.

A system for applying a chemical agent within a pipe includes a skid assembly, moveable longitudinally within the pipe. The skid assembly has a bottom positionable on a bottom, internal portion of the pipe. A delivery nozzle is carried by the skid assembly and is coupleable to a chemical agent supply. A dispensing tip delivers a controlled stream of chemical agent within the pipe toward an internal surface of the pipe. The tip is held at or above a surface of fluid carried by the pipe while at least a portion of the skid assembly is positioned below the fluid surface. The dispensing tip is limited from delivering the chemical agent downwardly toward the bottom of the skid assembly such that the dispensing tip delivers the controlled stream of chemical agent upwardly away from the bottom surface of the pipe and upwardly away from the fluid surface.

A system and method for inspecting offshore and onshore tubular or piping assets is described. The system and method utilizes an inspection tool comprising a communication system, a sensor, a long distance travel system, and a localized travel system, allowing fast long distance travel until the inspection tool approximates an area of interest, followed by actuating the localized travel system to accurately inspect the area of interest.