Ola Gjørsvik and Børen Petter Kjeldsen, River and Harbour Laboratory, and Sverre Lund,Deep Water Pipeline Project Committee

1975 ◽  
Author(s):  
Ola Gjørsvik ◽  
Børen Petter Kjeldsen ◽  
Sverre Lund
2010 ◽  
Author(s):  
Jay Chaudhuri ◽  
Mauro Pigliapoco ◽  
Massimo Pulici

2014 ◽  
Author(s):  
Lance Brown ◽  
Adrian Dayani ◽  
Shaun Lazenby ◽  
Jackson Miller

2004 ◽  
Vol 129 (1) ◽  
pp. 56-60 ◽  
Author(s):  
R. J. Brown ◽  
Andrew Palmer

On the large scale of deep-water construction, marine pipelines are extremely flexible. Construction procedures can exploit that flexibility to connect pipelines and risers to floaters, manifolds, wellheads, buoys, and platforms. The paper describes a three-dimensional physical model technique. It helps the engineer to think imaginatively and rapidly to explore different options, with the objective of minimizing construction risk and creating procedures that can be accomplished by the equipment available. The relevant governing equations are derived, and from them come the conditions required for the model to obey the correct mechanical similarity conditions. The model is exact, and can be used to derive forces and stresses; it is much more than just a picture. The paper describes a series of applications to two- and three-dimensional pipeline construction problems, most recently an application to the current Thunder Horse project.


2021 ◽  
Vol 11 (21) ◽  
pp. 10186
Author(s):  
Jin Yu ◽  
Chonghong Ren ◽  
Yanyan Cai ◽  
Jian Chen ◽  
Yuanqing Wang ◽  
...  

How to control deformation and avoid resonance is the key to ensuring the safety of the super-long pipeline when it is floating in the sea. Based on the deformation warning value of pipeline prototype composite material obtained from laboratory tests, the raw water pipeline project in Tong’an Xiamen adopts wireless communication equipment to transmit data, supplemented by aerial photography technology to monitor and feedback the strain and vibration during the dynamic construction of long-distance pipeline floating transportation. Combined with dynamic construction, this monitoring method avoids excessive deformation and resonance of the steel pipeline during floating transportation, and prevents the destruction of the anticorrosive coating. The airtightness test after completion shows that the whole pipeline meets the acceptance requirements. The monitoring results show that the strain at the bent position of the pipeline is large in the process of floating transportation, and the jacking speed and position of the tugboats have an important influence on the deformation of the pipeline. The same type of project should focus on these aspects and timely feedback monitoring data. At the same time, the study also provides detailed strain, modal analysis and effective monitoring technology for the safety of offshore steel pipeline floating transportation.


2014 ◽  
Vol 69 (7) ◽  
Author(s):  
Abdul Khair Junaidi ◽  
Jaswar Koto

Recent developments in offshore pipeline projects in Malaysia waters are showing general trend towards deeper water, such as KIKEH in 2200 meter water depth. As the exploration is getting into deeper water or crossing a deep water section, different design issues may become governing compared to shallow water. Conceptual Design for Deep Water Pipeline discusses number of issues that need to be taken onto account in the design of pipelines in deep water. Aspect related to high external pressure, limitation for installation and geo-hazards are addressed. In order to give an early insight for designer to measure the reliability for a deep water project to current technology capabilities, a simulation program required to achieve the objective. This paper discusses several factors for selection of subsea pipelines such as wall thickness, buckling arrestors design, installation configuration and free spanning.


LOGOS ◽  
2020 ◽  
Vol 31 (3) ◽  
pp. 20-33
Author(s):  
Sudarmoko

This paper discusses the contents and roles of the bulletin Giat (June 1953 to December 1957), a community-based periodical published in Jakarta by a Koto Gadang foundation to support development in Koto Gadang, West Sumatra. Giat played a role as a communication medium linking people from Koto Gadang who lived outside their home area (rantau) to their original villages. In describing and analysing the bulletin, I explore its content and focus on its collecting of funds for the clean water pipeline project in Koto Gadang and on its distribution of information, especially information about Minangkabau customary law, culture, literature, and the women’s movement. The bulletin also facilitated the sharing of family news among people from Koto Gadang in the village and the rantau. Giat became a medium for maintaining interpersonal connections and accommodated initiatives to develop the village. It is shown that, as a community-based publication, Giat played a role in developing village infrastructure as well as its social and cultural fields.


2011 ◽  
Vol 71-78 ◽  
pp. 631-634
Author(s):  
Ling Bo Dang ◽  
Lei Shun Zhang

An internal supporting structure because of its low cost, construction speed, and high efficiency in the construction of municipal works in the deep foundation pit enjoys a great advantage. In this paper, ZhongYuan West Road, the actual construction of water pipeline project, describes the mechanical characteristics,the design and construction of the internal supporting structure, It is summarized for an internal supporting structure in deep excavation of accumulated experience.


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