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1. (WO1991008372) FIRE PROTECTED PIPE AND PIPELINE
Latest bibliographic data on file with the International Bureau

Pub. No.: WO/1991/008372 International Application No.: PCT/GB1990/001854
Publication Date: 13.06.1991 International Filing Date: 28.11.1990
Chapter 2 Demand Filed: 01.05.1991
IPC:
E21B 17/01 (2006.01) ,E21B 35/00 (2006.01) ,F16L 57/04 (2006.01)
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
17
Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Casings; Tubings
01
Risers
E FIXED CONSTRUCTIONS
21
EARTH OR ROCK DRILLING; MINING
B
EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
35
Methods or apparatus for preventing or extinguishing fires
F MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
16
ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
L
PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
57
Protection of pipes or objects of similar shape against external or internal damage or wear
04
against fire or other external sources of extreme heat
Applicants:
BRITISH PIPE COATERS LIMITED [GB/GB]; Imperial Dock Leith Edinburgh EH5 7DR, GB (AllExceptUS)
ARNOTT, Thomas, Christopher [GB/GB]; GB (UsOnly)
SMITH, Iain, Stephen [GB/GB]; GB (UsOnly)
Inventors:
ARNOTT, Thomas, Christopher; GB
SMITH, Iain, Stephen; GB
Agent:
FITZPATRICKS; 4 West Regent Street Glasgow G2 1RS, GB
Priority Data:
8926967.429.11.1989GB
Title (EN) FIRE PROTECTED PIPE AND PIPELINE
(FR) CONDUITES TRANSPORTANT DU PETRÔLE ET OLEODUCS COMPRENANT UN REVÊTEMENT ANTIFEU
Abstract:
(EN) An oil carrying pipe for an oil rig riser comprises an anti-corrosion covering (2), a fire protection covering (3) over the anti-corrosion covering (2) and an outer coating (4) to retain the fire protection cover (3) in place. A field joint (5) comprising the three protective coverings (2, 3 and 4), is applied at the base ends of two connected pipes (1). The outer retaining covering (4) comprises a base matrix of a modified ethylene acrylic polymer having a dispersion of metal containing compounds, such as aluminium trihydrate and zinc borate. Under normal conditions the outer coating will protect the pipe against impact, abrasion and the like. Even though the base matrix material will char on exposure to a fire, the metal containing compounds will fuse to form a continuous stable outer coating which will retain the fire protection coating in position long enough to prevent an immediate blow out and thereby allow time to evacuate the larger area.
(FR) Une conduite transportant du pétrole pour un appareil de forage comprend un revêtement anti-corrosion (2), un revêtement antifeu (3) se situant sur le revêtement anti-corrosion (2), et un revêtement extérieur (4) destiné à maintenir en place le revêtement antifeu (3). Un joint de montage (5) comprenant les trois revêtements (2, 3 et 4) est placé aux extrémités des deux conduites (1) assemblées. Le revêtement extérieur (4) servant à retenir les autres revêtements se compose d'une matrice de base constituée d'un polymère acrylique d'éthylène modifié comprenant une dispersion de composés contentant des métaux, comme du trihydrate d'aluminium et du borate de zinc. Dans des conditions normales d'utilisation, le revêtement extérieur protège la conduite des chocs, de l'usure par frottement et des conditions similaires. Même si le matériau à matrice de base se met à brûler au contact d'une flamme, le métal contenant des composés se met alors à fondre pour former un revêtement externe continu et stable qui maintient en place le revêtement antifeu suffisamment longtemps pour éviter l'explosion immédiate de la conduite ce qui permet alors d'avoir le temps nécessaire pour évacuer les personnes situées dans une zone plus étendue.
Designated States: AU, BR, JP, NO, SU, US
European Patent Office (AT, BE, CH, DE, DK, ES, FR, GB, GR, IT, LU, NL, SE)
Publication Language: English (EN)
Filing Language: English (EN)
Also published as:
NO19922115EP0502908AU1991068811