The formation of gas hydrates on bubbles of hydrocarbon gases rising in seawater

✍ Scribed by D.R. Topham

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 705 KB
• Volume: 39
• Category: Article
• ISSN: 0009-2509
• DOI: 10.1016/0009-2509(84)85051-4

✦ Synopsis

Abstract4lculations

are presented which describe the behaviour of a rising bubble of hydrocarbon gas in seawater under conditions where gas hydrates are forming. The model uses empirically derived chemical rate constants and the calculations are compared with independent measurements of bubble lifetimes. For pure methane and for a natural gas mixture containing components up to nC,, the observed bubble lifetimes are of the same order as those calculated

The natural gas mixture is one thought to be typical of those occurring iu some Arctic oil fields and the results imply that single bubbles of natural gas released below about 500 m of water depth would he completely converted to hydrate before reaching the surface.