... and hence gives an interesting overview of this technology and its qualification status. insulation liner outer pipe trl4 high-performance deh-pip efficiency pipe characterization deh pip coating deh-pip offshore technology conference upstream oil & gas inner pipe qualification...

... the conventional DEH-PiP, then to design a new outer pipe to decrease dramatically its impedance. A strong effort was spent on the building of an accurate electrical model for the High-Performance DEH-PiP, and finally full-scale electrical tests on a representative prototype were carried out to validate...

... An analytical approach was employed to understand the coupled expansion of the inner and outer pipes during pre-stressing using Eq 1 , assuming equal expansions at both ends of the PIP (the mid-point is fixed): Objectives/Scope The project was a 2km, electrically heat-traced, subsea pipe...

... considerations required in deploying the method on an undulating seabed taking into account unplanned buckles or spans and the necessary adjustment to be made to pre-determined buckle sites. The study includes the effects of inner pipe snaking (with residual curvature) within a near straight outer pipe due...

... conference subsea system pipe bulkhead upstream oil & gas inner pipe outer pipe condensate reservoir new technology enable development complex reservoir insulation flowline ilpis tm ehtf system norwegian sea stalk inline structure heating wire main component OTC-29523-MS New...

...Abstract Abstract Swaged pipe in pipe construction has been increasingly used for offshore pipeline system. Double joint pieces of swaged pipe-in-pipe are typically welded together on a J-lay/S-lay vessel. The swaged end joint is fabricated through a cold deformation process to the outer pipe...

... other heat traced pipe in pipe concept, the electrical cables are spirally winded around the inner pipe and, covered with insulating material and enclosed in an outer pipe. Optical fibers are added in order to monitor stress and temperature. In the case of this technology, several innovations aiming...

... centraliser upstream oil & gas outer pipe tendency interaction piping simulation sriskandarajah inner pipe installation application thermal insulation bulkhead hp-ht pip system OTC 23112 : Development and Application of Reelable PIP Bulkhead Technology , J. Boi , B. Lynch...

... buckle piping design pipe-soil interaction expansion flowline outer pipe displacement guidance upstream oil & gas resistance offshore pipeline inner pipe end expansion friction deformation prediction axial friction DNV OS F101, Submarine pipeline systems , 2013 DNV RP...

... to the inner pipe and are welded directly to the outer surface of the inner pipe. This full penetration weld (hereafter called swaged weld) works as a structure connection between the inner and outer pipes and seals the annulus between the two pipes. The integrity of this swaged weld ensures the structure...

... the vessel, but with flush welded half shells to avoid diameter changes. The outer pipe is typically swaged down close to the inner pipe and welded directly to outer surface of inner pipe between stalks. This full penetration weld (hereafter called swaged weld) works as a structural connection between...

... Abstract The interest in the numerical modeling of a deepwater pipe-in-pipe system (PiP) at a free span location is growing. In a free span, the inner pipe bends substantially due to internal pressure and temperature and possibly contacts the outer pipe. Concerns arise how the interaction...

... oil & gas anchor contraction pipe strength piping design otc 19824 bulkhead offshore pipeline trestle pipeline insulation lng pipeline subsea pipeline outer pipe weld lng inner pipe ni steel gas monetization pipeline configuration piping simulation subsea lng pipeline OTC...

...-lay method. During the pipe welding and lowering process, the vessel tensioner grabs the outer pipe with the inner pipe free-standing inside the outer pipe. Therefore a large top lay tension is applied to the outer pipe while the inner pipe is under a sizable compression due to its own weight...

... system outer pipe inner pipe waterstop system piping simulation offshore pipeline centralizer lateral fabrication otc 19951 upstream oil & gas pipe piping design brazil installation mechanically qualification test offshore technology conference buoyancy module OTC 19951 Design...

... free Pipeline. Double containment can also be offered by using a stainless steel outer Pipe. Full insulation significantly reduces Boil off Gas which in turn leads to considerable asset savings over long term operations. The subsea section can be concrete coated for stability and protection whilst...

... containment (third pipe) to create the so called Pipe-in-Pipe-in-Pipe (PiPiP) concept. The inner pipe transports the cryogenic fluid, the annular space provides the necessary insulation properties and the outer pipe(s) offers protection from the external environment (pressure, corrosion, impacts...

... oil & gas offshore structure insulation piping design offshore pipeline intermediate pipe fe model stiffness riser displacement pipeline model onshore tie-in piping simulation outer pipe midstream oil & gas bulkhead offshore technology conference pipeline friction lng...

... requirement thickness external pressure foam piping design annular material ultimate strength sandwich pipe polymer coefficient diameter thermal conductivity outer pipe polypropylene steel pipe shear stress pipe adhesive OTC 19704 Sandwich Pipes for Ultra Deepwater Applications Xavier...

... is inside an outer pipe separated by an annulus filled with thermal insulation. PIP technology is a design challenge, and is normally used when a low Overall Heat Transfer Coefficient (OHTC) value is required (<1 W/m2K). High Pressure (HP) has a major impact on the design of wellhead and other equipment...