【摘 要】
：
The technology and methods involved in pipeline laying in shallow water have evolved to the level of routine and commonplace. However, regarding the unexpected
【机 构】
：
China Offshore Oil Engineering Co.
【基金项目】
：
国家高技术研究发展计划(863计划)
论文部分内容阅读
The technology and methods involved in pipeline laying in shallow water have evolved to the level of routine and commonplace. However, regarding the unexpected deepwater complexity, the traditional pipeline laying techniques have to confront many new challenges arisen from the increase of the water depth, diameter of the pipe and the welding difficulty, all of which should be modified and/or innovated based on the existed mature experiences. The purpose of this investigation is to outline the existing and new engineering laying techniques and the associated facilities, which can provide some significant information to the related research. In the context, the latest deepwater pipeline laying technology and pipe laying barges of the renowned companies from Switzerland, Norway, Italy etc., are introduced and the corresponding comparison and discussion are presented as well.
其他文献
Continuous SiC fiber reinforced copper matrix (SiCf/Cu) composites were prepared by fiber coating method,and Ti6A14V interlayer was introduced as an interfacial
H-infinity estimator is generally implemented in timevariant state-space models,but it leads to high complexity when the model is used for multiple input multip
The construction method of background value is improved in the original multi-variable grey model (MGM(1,m)) from its source of construction errors.The MGM(1,m)
To overcome the influence of on-orbit extreme temperature environment on the tool pose (position and orientation)accuracy of a space robot,a new self-calibratio
The problem of the steady magnetohydrodynamic (MHD) stagnation-point flow of an incompressible viscous fluid over a stretching sheet is studied. The effect of a
为探究吕家坨井田地质构造格局,根据钻孔勘探资料,采用分形理论和趋势面分析方法,研究了井田7
Apatite-type lanthanum silicate with special conduction mechanism via interstitial oxygen has attracted considerable interest in recent years. In this work, pur
Logit regression analysis is widely applied in scientific studies and laboratory experiments, where skewed observations on a data set are often encountered. A n
The self-cementing mechanism at early ages of circulating fluidized bed combustion (CFBC) coal ashes was studied by X-ray diffraction (XRD), infrared (IR) spect
转化法是英语构词法中的主要方法之一,具有方便、简洁、生动、准确等特点,在现代英语中使用普遍.本文从完全转化、部分转化和特殊转化三个角度对转化法进行分析,试图找出转化