C - Chemistry – Metallurgy – 09 – D
Patent
C - Chemistry, Metallurgy
09
D
C09D 189/00 (2006.01) B03C 1/28 (2006.01) B05C 7/08 (2006.01) B05D 7/22 (2006.01) E21B 41/02 (2006.01) F16L 58/10 (2006.01)
Patent
CA 2104298
2104298 9218151 PCTABS00016 An ablating pig (20) comprised of a mass of gelatin for use in treating tubulars (15). The pig will ablate as it passes through the tubular thereby depositing a treatment layer (21) onto the wall of the tubular. The pig can be molded outside the tubular or it can be formed in situ. The pig is formed by mixing common (i.e. technical) gelatin of the type derived from collagen with a heated liquid and a treating solution (e.g. corrosion inhibitor, drag reducer, etc.). In one aspect, magnetic particles (13) are entrained in the mass. The mass can be integral or it can be made up of individual components of gelatin. A slug of the treating solution can also be passed through the pipeline between two ablating gelatin pigs. For high temperatures applications, a hardener may be used to increase the melting temperature of the gelatin.
Lowther Frank E.
Olsen Alden W.
Atlantic Richfield Company
Osler Hoskin & Harcourt Llp
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