Inhibiting Gas Hydrate Formation by Polymer–Monoethylene Glycol Mixture
- Authors: Semenov A.P.1, Medvedev V.I.1, Gushchin P.A.1, Yakushev V.S.1, Vinokurov V.A.1
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Affiliations:
- I. M. Gubkin Russian State University of Oil and Gas
- Issue: Vol 52, No 1 (2016)
- Pages: 43-51
- Section: Article
- URL: https://journals.rcsi.science/0009-3092/article/view/234386
- DOI: https://doi.org/10.1007/s10553-016-0671-8
- ID: 234386
Cite item
Abstract
Inhibition of formation of methane hydrate with cubic structure CS-I and methane-propane (95.66 CH4 + 4.34 C3H8 mole %) hydrate with cubic structure CS-II by isothermal method and method of cooling at the constant rate of 2°C/h, using 0.5% of a kinetic inhibitor (KIH) + 20.8% of the thermodynamic inhibitor (TIH) monoethylene glycol (MEG) is studied. It is shown that the synergic effect of increase in inhibiting capacity of a polymeric kinetic inhibitor (KIH) in the presence of 20.8% of MEG (TIH) is observed in the case of both methane hydrate and methane-propane hydrate inhibition. The synergy manifests itself in the form of increase in supercooling degree by 2.5-3°C that is attained in the KIH + TIH system before the initiation of hydrate formation as compared to a system that contains no TIH (MEG). The induction time is shown to depend on the degree of supercooling in the system while inhibiting CS-1 and CS-II hydrates with 0.5% KIH + 20.8% MEG. The obtained data indicate that KIH + MEG antihydrate reagents can be used to inhibit formation of technogenous gas hydrates at < 0C temperatures.
About the authors
A. P. Semenov
I. M. Gubkin Russian State University of Oil and Gas
Author for correspondence.
Email: semyonovanton@mail.ru
Russian Federation, Moscow
V. I. Medvedev
I. M. Gubkin Russian State University of Oil and Gas
Email: semyonovanton@mail.ru
Russian Federation, Moscow
P. A. Gushchin
I. M. Gubkin Russian State University of Oil and Gas
Email: semyonovanton@mail.ru
Russian Federation, Moscow
V. S. Yakushev
I. M. Gubkin Russian State University of Oil and Gas
Email: semyonovanton@mail.ru
Russian Federation, Moscow
V. A. Vinokurov
I. M. Gubkin Russian State University of Oil and Gas
Email: semyonovanton@mail.ru
Russian Federation, Moscow