The Study Of Shallow Submarine Pipeline Control Scheme In Nanpu

Submarine pipeline is an important part of the offshore oil production facilities, subsea pipeline offshore oilfields of the entire production system organic link between the normal operation of the submarine pipeline is an important guarantee of offshore crude oil production. Longer production run time of rising sea tube put into the riser phenomena will be vacant in the inside and outside of the sea state and the pipeline itself under growing. During pipeline vacant governance aspects to consider from the governance of the feasibility, reliability, treatment costs, as well as the consequences of the accident, the use of the most suitable the sea area vacant governance measures, in order to effectively reduce the undersea pipe caused due Submarine Pipelines risk of fracture and the oil spill occurred.In this paper, the two most recent time interval less than a year Nanpu1-3D survey data contrast two undersea pipelines analysis found that the pipelines where the seabed is still in an unstable state of activity, pipeline bare, dangling, shift changes are very obvious. Which caused-3D submarine pipeline suction exposed sandy area pipeline, the vacant main causes of major: sand suction area back into the slurry process, the loss of mud pit edge region;2010the sea pipe governance process in a large number of backfill gravel alter the flow field, leading to suck sand near the sea-bed erosion; natural sediment movement of the sea bed, part of the sea-bed area there is a certain erosion phenomenon; pipeline buried lighter, most regional depth of less than0.5m aspects.In addition, against the actual situation of South Fort shallow sea, the of this article First of all this the of the soil quality characteristics of and climate characteristics of the stratigraphic of the sea area the seabed carried out analysis, and the law of the movement of the affect the of the seabed sediment of the submarine pipeline carried out a research. Secondly, in the on the basis of analysis of the at home and abroad pipeline the status quo, against the to the of dangling causes of the South Fort shallow sea the seabed in areas pipeline carried out a-depth analysis of, and to explore the a the calculation of method of the pipeline left unconnected the length of. Once again, in the on the basis of left vacant to analysis of the on the sea tube position, particularly the is the of the sea tube of the South Fort shallow sea, it is given to a the prevention and treatment of and governance of measures of the submarine pipeline, to provide a the guidance of to the for the sea tube left unconnected problem. Finally, the combined with of the actual situation of the South Fort shallow sea region, done a preliminary of the explore the this the of the sea and tube left unconnected Causes and artificial team block stone and trenching, etc. of the region remedial measures, and gives the of the solve the method of the feasibility of, for the a the future is similar to of the construction The problem to provide the the referential significance.