... localization in either the weld or base pipe. Here, it is important to note that for strain-based design, it is principally important to ensure ductile behavior in both the carrier pipe and girth welds. The capacity is noted in Fig. 1 by the peak of the curve. The peak is related to the more limiting...

... structure. floating production system pipeline bundle suction caisson overpressure requirement gravity operation mobilization upstream oil & gas subsea production equipment carrier pipe foundation recovery load pipeline infrastructure subsea structure installation north sea...

... are illustrated in Table 1. There are both single wall pipe and pipe-in-pipe specimens. The dimensions of the single wall pipe and the carrier pipe of the pipe-in-pipe are the same. The carrier pipe and the inner pipe of the pipe-in-pipe have different D/t ratios. The steel grade is API grade B, and tensile...

.... The design methods of these projects, as applied for pipeline expansion and trawl gear interaction, appear to differ. The installed and planned reeled PIP systems typically have an OD smaller than 15 for the carrier pipe, and many of these are installed in areas where trawl gear with weights of up to 6-7...

... pipe always suffers a high temperature load. The possible buckling deformations of inner and outer pipes are not synchronous, and the carrier pipe may buckle under some shorter wavelengths in the annular spaces. Depending on the PIP structures, the buckling deformations of carrier and casing pipes...

... and objectives Pipelines used in deepwater are usually coated with insulation layers in order to reduce the formation of wax due to heat loss. In some cases, conventional coatings are replaced with PIP systems, which provide higher insulation. The PIP is composed of a carrier pipe (the external pipe...

... (depths up to 350m) the use of bundled pipelines in a carrier pipe has become standard procedure and methods for installation and construction are common place. There are a number of advantages to using a carrier pipe: - Increased buoyancy therefore making easier towing. houston carrier pipe...

... This paper discusses different finite element models to assess the structural integrity of pipeline bundles installed on uneven seabeds. A pipeline bundle consists of an outer carrier pipe and several internal flowlines. This concept offers many advantages compared to conventional pipelines...

..., insulated, pipe-in-pipe arises from transmission of a hot product. To maintain the desired temperature of the hot product in the carrier pipe, thermal insulation is applied between the carrier pipe and the external jacket pipe to achieve the desired pipe-in-pipe design arrangement. A new analysis method has...

... protection reticulated service pipe work engineering service consideration selection insulation davis station pipe heat trace pipework construction carrier pipe installation cable piping design site service Proceedings of the Second (1992) International Offshore and Polar Engineering...