METHOD TO LAY MANIFOLD PIPELINE IN CONSTRUCTION OF DEEP-WATER PASSAGE Russian patent published in 2011 - IPC F16L1/12 F16L1/00 

FIELD: construction.

SUBSTANCE: long hinges are assembled on land. To provide neutral floatage of a joint, plastic couplings are fixed on the pipe, or polymer materials are wound onto the pipe with positive floatage. One end of the joint is pushed into water with the help of trusses serially fixed on the bottom in the form of frames with rollers of soft materials and is filled with water. On land a new joint is connected to the other end and is submerged into water, forming the pipeline run. The free end arranged in water is towed with a vessel. The pipeline run is located at the depth that does not interfere with navigation in suspended condition. After the run achieves the specified trajectory, the pipeline is submerged and retained in suspended condition with the help of anchors fixed on it with the help of flexible cords.

EFFECT: invention provides for continuous process of pipeline laying, which does not interfere with navigation, accelerated process of installation, application for wide range of depths and dimension types of pipes.

6 cl, 6 dwg