What are ...Pipe Laying Ships?
Seen: 17585 Tags: laying pipelines, DYnamic Positioning
Vessel that helps in laying pipelines and setting at the bottom of the ocean is called Pipe Laying Ships. This type of vessel allows seamless continuity of operations in drilling offshore areas of processing plants along the coast, and as such is an indispensable cog of offshore operations for oil excavation.
Range of vessels, positioning the tube does not only include vessels used for specific operational purposes, but also covers all those ships posing tubes that apply to generic underwater operations.
Designated as "specified vessels" to be used at sea, ships, placing tubes have several structural features such as the inclusion of state-of-the-art technological devices far as crane systems with really large capacities drag and DP /Dynamic Positionsing/ systems.
The presence of these devices became necessary because they help to facilitate optimal positioning operations pipes under water regardless of the water area where performed.
Another major feature of the construction vessels pipes is that their structural design is unique and according to their positioning of underwater pipes. Each of the main differences of these vessels can be explained as follows:
¦some vessels have a mechanism that allows for the necessary length of pipe to be developed as a reel. Throughout operations positioning of pipes spools pipes from developed to coincide with the operational needs.
¦vessel for insertion of tubes that helps underwater positioning method of "S" application is called "S" - laying pipe laying ship.
¦facilities for placement of piping, using the methodology of the "J" underwater installation shall be identified as "J" - laying pipe laying vessels.
Arrangingthe necessary length of submarine pipeline in the last two of those vessels is carried out within the confines of the ship, as opposed to those with the necessary arrangement of pipes is carried out by the coast, so as to reduce operating costs.
Mainlythere are three methodologies for application that can be used. Each of them can be briefly described:
¦Methodology "S-lay" includes S-shaped arc of pipelines that once released from the ship can be positioned appropriately. The position of the mechanism on board, laying the pipes in the water is completely flat, allowing the tubes to occupy a unique S-shaped curve, thus clearly indicating the methodology used.
¦Methodology "J-lay" refers to the J-shaped arc of the pipe as it is outside the ship. To obtain only the J-shaped curve mechanism for laying pipes is placed perpendicular to the ship, allowing you to control the curvature of the pipe as it is lowered into the depths required.
¦The last method of application involves the use of towing vessels that are placed on the pipe to the surface, supported by buoys. In order to allow the pipes to reach the desired depth, then they are suitably located in the designated area of ??thewater surface support buoys are removed.
This method of positioning the pipes is very effective in all areas of water, regardless of water depth.
Shipslike Pipe Laying Shipshelp to reducethe pressure of constant requests for urgent deliveries. Through these vessels, some maritime operations are becoming possible. Ships laying pipes have become one of the greatest technological advances of the evidence in support of the cause of vital maritime operations.