...LOW COST SUBSEA SYSTEMS FLEXIBLE PIPE - THE WAY FORWARD E. MCGENNIS Coflexip (UK) Ltd. Commonwealth House 2 Chalk Hill Road London W6 8DN England ABSTRACT Since the development of flexible pipe in the early 1970's over 2,500 km of product has been manufactured and then installed subsea. This has...

... assembly installation pipeline bundle system riser tow method offshore pipeline upstream oil & gas subsurface mid-depth tow method smith general manager requirement pipeline bundle buoyancy tank bundle fabrication connectable system towed pipeline technique buoyancy beach...

... retrofit riser system riser requirement riser requirement caisson flexibility platform construction upstream oil & gas riser system new jacket installation cost comparison caisson riser system production facility construction future riser require3ent future riser requirement...

... of the major industry requirements for a sound but flexible basic subsea production control system package. The subsea control systems being installed today are, in a number of ways, at least 10 years out of date. Technology has advanced, the industry meanwhile would seem to have stood still or in some cases...

... over the testing programme, including the coated surfaces at the collet/retaining ring area. 3.7 Installation and Reconnection 3.7.1 Installation The weak link is designed to be installed as part of the umbilical in its made up condition. Fig.12 shows a typical umbilical prior to installation. During...

... valve operations and receive monitored sensor values. The loss or degradation of any of these facilities could result in a field shutdown with associated loss of hydrocarbon production revenue. As an overall system, the costs associated with umbilicals are a major proportion of the capital, installation...

... is continuously being put into developing new machinery, this contribution can only cover the field incompletely and as of winter 1989. The scene is the North Sea or the Norwegian Sea, with field installation on subsea template or unmanned wellhead platform (Fig. 1). The well fluids produced should be transported...

... grew to the massive and expensive installations known today As further wells were discovered that could be tied back to these installations the economics drove the industry to install the trees directly on the seabed, and so offshore engineering moved towards equipment specifically tailored for subsea...

... installed to the year 1995, by which time some 1200 subsea completions will have been installed worldwide. This compares with the current figure of approximately 450 subsea completions since 1961. Some of these wells will be located on templates and the Christmas tree arrangement may be significantly...

... of monitoring to be done offshore and for the information to be relayed back to an onshore installation where supervisory control was carried out. Systems were later installed on platforms but still only operated in the role of gathering information for the operator and as a central point from which he could...

... into a subproject called North Alwyn Underwater (NAU) These were installed and started up in mid-1988. This paper describes the experience Total Oil Marine has had with these subsea wells as follows introduction to NAU, integration testing, offshore installation, start-up and operations INTRODUCTION TO NAU...

...-consumption electronics with intrinsic well safety procedures and closed-loop type hydraulics The control module can be installed without guidelines, either with a drill string or a simpler wire line, by means of a dedicated positioning, soft landing and orientation systems The interface with the subsea...

... without damaging adjacent equipment or being damaged itself. 3.2. Module Deployment The DISPS template modules can be installed and retrieved without guidelines. Such a system for water depths up to 750 m envisages a module deployment system, operated from a suitable dynamically positioned (DP) monohull...