... ABSTRACT Subsea trenching operations are routinely performed to provide protection for pipelines, umbilicals and power cables. The increase in offshore wind farm developments and the focus on environmental impact from new regulatory bodies and the public have focused attention on trenching...

...1. Introduction 1.1 Background Very soft offshore sediments within the Gulf of Guinea present sizeable challenges for the design of pipelines and suction caissons that are to be installed into these sediments. Undrained shear strength pro- files of these sediments typically exhibit high values...

... Abstract To satisfy flow assurance criteria, it is sometimes required to restrain the pipeline against any movement that could prevent free drainage of the pipeline during a shutdown. Rock dumping of a surface pipeline is a viable restraining solution, provided it is properly designed...

... ABSTRACT The design of pipelines using controlled lateral buckling is sensitive to the resistance caused by soil berms. To investigate the behaviour of these berms, an experiment was carried out using a model pipe photographed through a window in a centrifuge strongbox. The processed images...

... ABSTRACT The calculation of axial resistance of a pipeline is a key component in lateral buckling design, upheaval buckling (UHB) analysis, axial walking assessment, pipeline anchoring and pull-in and retrieval analyses. The level of axial resistance will depend on the rate and duration...

...CONTINUOUS BURIAL ASSESSMENT OF PIPELINES AND CABLES: A STATE-OF-PRACTICE A. ~uech ' and H-J. ~uenter' 1 (Fugro France) (Fugro Engzneers B V ) Abstract In response to the demand of the telecommun~cat~on cable market, new tools have been recently developed and introduced for burial assessment...

..., Tunbrzdge Wells, Kent, England Abstract The paper explains issues associated with pipelme upl& dunng backfilling and floatation, specifies the high nsk conditions and presents analytical work and full scale laboratory testing camed out to enhance the current state-of-the-art. Pipelines are buried to provide...

...ACCURATE DETECTION OF BURIED PIPELINES IN RIVER CROSSINGS AND INSHORE AREAS BY MAGNETIC METHODS T. des ~allieres', K. ~ u l r ' and T. slatter2 ' ~otalFzna~lf; France 2~nnovatum, UK Summary The need for accurate pipelme network charts m the Mahakam Delta (Indonesia) became imperative for safe...

... pipeline or to a floatmg production system by means of infield pipelines. Floating production systems come in a vanety of forms, includmg a) Floating Production Storage and Offloading systems (FPSOs) which are shlp-shape tanker-like vessels moored to the seabed via catenary anchor lines or taut, but angled...