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- Title
Thermodynamic Inhibitors for Hydrate Plug Melting.
- Authors
LI, XIAOYUN; GJERTSEN, LARS HENRIK; AUSTVIK, TORSTEIN
- Abstract
A bstract: The hydrate melting efficiency of thermodynamic inhibitors has been shown to depend on hydrate plug properties, inhibitor properties, and the turbulence of the liquid system in question. Inefficient mixing of inhibitor and water, lack of contact between inhibitor and hydrate, and a solid or gel precipitation in the melting region have been demonstrated to give low melting efficiency. MeOH seems to be the most efficient inhibitor for melting porous plugs, but may not melt a plug with low porosity. MEG has the ability to penetrate into a compact plug and cause melting. However, when used at high concentrations, MEG may freeze out as a solid or gel, which can lead to reduced hydrate melting efficiency. At high pressures and in the presence of a hydrocarbon liquid, MEG solutions were shown to freeze out at temperatures more than 30°C higher than values given in the literature. TEG seems to easily freeze and become inefficient for melting hydrate plugs.
- Publication
Annals of the New York Academy of Sciences, 2000, Vol 912, Issue 1, p822
- ISSN
0077-8923
- Publication type
Article
- DOI
10.1111/j.1749-6632.2000.tb06836.x