Method for crossed crossing construction of composite hose

Abstract

The invention provides a method for crossed crossing construction of a composite hose. The method comprises a step S1 of accurately measuring the binding position of a grouting air bag; a step S2 of recycling the composite hose and binding the grouting air bag at the appropriate position; and a step S3 of placing the composite hose in position again to perform grouting operation and finishing crossed crossing treatment of the composite hose. The method has the advantages that by adopting the method, crossed crossing treatment can be performed in the composite hose laying process, the conventional requirement for pretreatment on crossed crossing points through an operation ship prior to the laying of a new pipe is omitted, and the method not only reduces massive offshore working amount and reduces operation cost, but also greatly reduces operation safety risk.

Description

technical field [0001] The invention relates to the technical field of cross-spanning of submarine composite hoses, in particular to a construction method for cross-spanning of composite hoses. Background technique [0002] With the advancement of technology, offshore oil and gas fields have been further developed, and there are more and more offshore oil platforms, followed by criss-crossing submarine pipelines. When two sea pipes cross and span, the newly laid sea pipe will generate additional pressure on the original sea pipe, and at the same time, the newly laid sea pipe will also be suspended. It brings great safety hazards. In order to ensure the safe operation of offshore oil and gas pipelines, the original pipelines need to be protected when the newly laid submarine pipelines cross the original submarine pipelines according to the specifications. [0003] At present, the conventional method for crossing submarine pipelines is to lay concrete briquettes above the ori...

AI Technical Summary

Problems solved by technology

From the above analysis, we can see that the conventional subsea pipeline crossing treatment method has the following main disadvantages: (1) It is necessary to mobilize the operating ship to pre-treat the crossing point before laying the new pipeline, resulting in huge operating costs; (2) ) Since each concrete briquette needs to be hoisted and installed separately, the hoisting of a large number of concrete briquettes will lead to a large offshore workload; (3) The hoisting and seabed placement of concrete briquettes need to be strictly controlled to avoid collision with the original pipeline, The safety risk is extremely high; (4) The newly laid composite hose needs to be precisely controlled to ensure that it spans over the concrete briquette, which is difficult

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