Glass Fibers
Subsea Wellhead And Pipeline Protection Covers
Wellhead and pipeline protection covers are required under the Norsok regulations for subsea installations in the Norwegian sector (Standard U-002, Subsea Structures and Piping System). Traditional steel wellhead covers are very large — often more than 50 ft/15m square — to allow ROVs access to the Christmas t
Read MoreCustom Wet Layup Repair Solutions
In the second group are customized repairs, employing glass or carbon reinforcement, wet out with vinyl ester, polyester or epoxy resin and applied to the pipe by trained personnel, have been available since the mid-1990s. Selection of reinforcement material, wrap thickness and overlay length is dictated by th
Read MoreComposites Used For Repair by Statoil
Statoil has used composites to repair steel topside components for more than 10 years on the Statfjord and Gullfaks platforms, using wet layup methods designed for each application, says Melve. “We repaired four water lines at an onshore oil storage facility between 1983 and 1987,” he says. “After nine years,
Read MoreDesign Issues with Repair
The ability to repair in place, rather than replace, critical platform equipment systems like topside piping, flowlines and structural components is an attractive option for a platform operator. Composite piping is easily repairable using the same basic methods as the initial installation, says Kevin Schmit, m
Read MoreDownhole Composites Boost Durability, Drillability
Halliburton Energy Services, Schlumberger Oilfield Services, Weatherford International, and Baker Oil Tools, all based in Houston, Texas (U.S.A.), offer composite downhole tools — made with both thermoplastics and thermoset resins — for a variety of applications. Halliburton’s FasDrill packers and plugs
Read MoreFiberglass Ideal For Dry Deluge System Applications
Around 1982, offshore platforms began using dry deluge systems, where the ring main is kept full of seawater but the downstream piping is dry. The dry piping is separated from the ring main by deluge valves, which automatically open and distribute water through the dry pipe to spray nozzles during a fire. This
Read MoreProven Performance In A Chemical Line Installation
EDO Specialty Plastics (Baton Rouge, La., U.S.A.) filament winds composite pipe and fittings for offshore facilities platforms and rigs. Founded in 1973 as Specialty Plastics and acquired by EDO in 1998, the company manufactures industrial fiberglass piping systems for the chemical, petrochemical and pulp and
Read MoreRiser Arch Trays, Mud Mats Provide Multiple Benefits
In 1999, 42 composite riser arch trays were supplied by DML Composites (Plymouth, U.K.) to Halliburton Subsea for the Norsk Hydro Troll C field riser support system, in 1,100 ft/340m of water. The trays, which sit atop two 260 ft/80m tall steel jacket riser support structures, cradle the flexible risers that c
Read MoreComposite Accumulator Bottles Perform In Service
A riser tensioning system for a TLP consists of a tensioning ring and framework, with four to eight hydraulic cylinders — each with an attached pressure vessel or “accumulator bottle” — to support and allow movement of the rigid riser pipe. Installed in the riser wellbay, this primary structural system is desi
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