Provided are a helically traveling carriage and a helically traveling cleaning machine capable of efficiently performing a maintenance process, such as cleaning, with respect to a helical structure formed by winding a helical wall around a column at a central section of a vertically extending cylindrical wall. This helically traveling carriage includes a lower moving-and-contacting part that rolls or slides on a helical wall's upper surface, a lateral bridge mechanism that bridges a column's outer circumferential surface and a cylindrical wall's inner circumferential surface, the lateral bridge mechanism having, on one end thereof, a first moving-and-contacting part that rolls or slides on the cylindrical wall's inner circumferential surface, and having, on the other end, a second moving-and-contacting part that rolls or slides on the column's outer circumferential surface, and a rotary engagement part that rotatably engages with the column by laterally receiving a portion of the column.

An improved apparatus and methodologies of use for cleaning debris and contaminants from an interior surface or sidewall of a fluid-carrying conduit, such as a pipeline, are provided. More particularly, an apparatus and methodologies of use are provided, wherein the apparatus or pipeline pig operates bi-directionally and comprises counter-rotating cleaning elements that are operative to enhance removal of debris and contaminants from the pipeline.

A pig is provided for passing through a pipeline having a pipeline wall. The pig comprises at least one functional unit for cleaning the pipeline and/or for receiving pipeline information. The pig also comprises at least one magnet unit which is provided for magnetizing the pipeline wall, and which has a plurality of magnets. The magnet unit has a plurality of segments each with at least one magnet. The magnetizing devices of mutually adjacent segments are angled at least by approximately 90 to one another.

The present disclosure discloses embodiments of a cleaning device and system for pull-in operations. An embodiment of a system presents: a topside unit comprising two hydraulic power units, a subsea manifold control station, a camera and light control station and a manipulator mechanism control unit; a control umbilical cable; a guide camera. In addition, an embodiment of a system includes the cleaning device for pull-in operations that presents: a pod; a manipulator mechanism; connection boxes; guide rollers; a high pressure pump; a subsea manifold; mechanical locks; a rack; a rack pump; side nozzles; and a magnetic support for attaching a mobile nozzle and a torque tool.

The present invention relates to a Pig laser (10) that is equipped with a heating system to be used in the removal of scaling from subsea production systems (50) such as production lines, manifolds, ANMs and production columns. The induction promoted by the laser radiation is applied to the DTPA solution, heating and accelerating the reaction at the design limit temperature of the equipment to be descaling. At the same time, the laser is capable of maintaining the reaction temperature under control, considering the thermal demand of the reaction and the heat losses by the equipment that is located in ultra-deep waters, where the temperature is below 15 C. The target scaling is barium sulfate or strontium sulfate that are formed due to sulfated water coming from the reservoir that receives the injection of seawater without desulphation treatment. The present invention enables a method for descaling barium and strontium sulfate in the range of 60 to 100 C., with a pH preferably of 12.8, using DTPA composed in a 28.7% v/v solution and a mechanical agitation process.

An apparatus for descaling an inner surface of a bending steel pipe includes a support pallet supporting a plurality of bending steel pipes of which first ends and second ends are opened, the plurality of bending steel pipes being disposed in one direction on the support pallet, a stopper part selectively stopping the first ends and the second ends of the plurality of bending steel pipes, a shot ball supply part supplying shot balls to inner portions of the plurality of bending steel pipes through one of the first ends or the second ends of the plurality of bending steel pipes, and a high frequency vibration part on which the support pallet is seated and which performs high frequency vibrations to shot-peen the inner portions of the plurality of bending steel pipes supported by the support pallet.