Results 261 to 270 of about 11,989 (309)

Buckle propagation in submarine pipelines

Nature, 1975
DURING its construction a submarine pipeline is at the same time bent and loaded by the external pressure of the sea. If it is bent too far, it buckles. If the local external pressure is small, the buckle is limited to a short kink on the compressed side of the pipe.
ANDREW C. PALMER, J. H. MARTIN
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Hydrodynamic Forces On A Submarine Pipeline

Journal of the Pipeline Division, 1967
The hydrodynamic forces acting on a submarine pipeline subjected to transverse horizontal currents have been, in some cases, completely overlooked or grossly underestimated. The paper describes the obtaining of experimental data and the interweaving of theoretical and experience for establishment of these forces.
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Development of Submarine Pipeline 3D GIS Platform

2013 Seventh International Conference on Image and Graphics, 2013
During offshore oil exploration, we must take regular investigation and inspections of submarine pipeline, and also need to effectively manage this historic and current information with respect to the oil pipeline, such as the position of pipeline, seabed topography and relief around the pipeline, seabed sediment compositions and so on, so that we can ...
Peng Lei, Kun Yang
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Trenching and Burial of Submarine Pipelines

1986
There have been two kinds of requirement for pipeline trenching. In shallow water, on beaches and on tidal flats, usually within a few hundred metres of the shore line, there is a need for relatively deep trenches, so that the pipeline does not become exposed if storm action changes the level of the sea bed.
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Hydraulic Trenching of Submarine Pipeline

Transportation Engineering Journal of ASCE, 1971
A consortium of oil companies commissioned two firms of contractors to construct, as a joint venture, a single buoy mooring system off the South African coast. It was planned to pull the pipes out to the sea through a sleeve to be placed in a trench blasted 600-ft rocky reef in the surf zone, and to bury the pipe on the seaward side of the reed between
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CFD Numerical Simulation of the Submarine Pipeline With a Spoiler

Journal of Offshore Mechanics and Arctic Engineering, 2008
Submarine pipeline is one of the most important oil transportation components; pipeline failure due to overspan is the most serious failure mechanism. There are four reasons of pipeline span formation, including erosion of seabed, bumpy seabed, submarine pipeline climbing slope, and pipeline ascending to offshore platform.
Jianping Zhao, Xuechao Wang
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Hydrodynamics of submarine pipelines

2008
The primary objective of this study is to obtain an improved understanding on local scour submarine pipelines. Experiments have shown how local scour develops around submarine pipelines in non-cohesive sediments.
Chiew, Yee Meng., Chen, Charng Ning.
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Submarine Pipeline Trenching by Multipass Ploughs

Offshore Technology Conference, 1985
ABSTRACT A major development program for large ploughs to trench submarine pipelines began in 1975, and has led to the construction of 13 ploughs, which have been used in many parts of the world. Deep trenches are best cut in a sequence of separate passes.
R.J. Brown, A.C. Palmer
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Design of a Submarine Oil Pipeline

Journal of Transportation Engineering, 1993
Submarine oil pipelines carry hot crude oil obtained from offshore oil wells to an onshore location. As the flow proceeds, the crude oil progressively cools down, drastically changing its kinematic viscosity. This cooling increases the surface resistance to flow considerably. Analysis of such a pipeline is complicated because it involves a large number
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Concrete coating for submarine pipelines

Magazine of Concrete Research, 1982
Synopsis A submarine pipeline is usually externally coated with reinforced concrete, the function of which is to protect the corrosion coating against impact damage, and give the pipe additional weight to stabilize it on the sea bed. There are unusual requirements in design and application technology. The paper examines the current state of knowledge
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