The effect of chemistry and system conditions on hydrate interparticle adhesion forces toward aggregation and hydrate plug formation

Zachary M. Aman, Guro Aspenes, E. Dendy Sloan, Amadeu K. Sum, Carolyn A. Koh

Research output: Chapter in Book/Conference paperConference paper

8 Citations (Scopus)

Abstract

The adhesion force between two cyclopentane hydrate particles was directly measured using an improved micromechanical force apparatus. Adhesion forces decreased between 22 and 87% with the addition of approximately 1000 ppm of various carboxylic acid derivatives. The effect of simple, saturated carboxylic acids (such as decanoic acid) may be fully explained by a decrease in water-oil interfacial tension. More complex carboxylic acids, such as L-lysine and D-tyrosine amino acids, migrate slowly to the water-oil interface and subsequently are ineffective at weakening the capillary water bridge between hydrate particles in the 30-second formation/destruction timescale. A 4-membered polynuclear aromatic carboxylic acid (1-pyreneacetic acid) exhibited a decreased adhesion force larger than the prediction from decreased interfacial tension, suggesting an alteration in hydrate surface wettability. We present a numerical solution of one hydrate slurry viscosity model for a simple pipeline scenario, where the difference in adhesion force between mineral oil and 1-pyreneacetic acid can shift shear requirements by an order of magnitude.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - International Symposium on Oilfield Chemistry 2011
PublisherSociety of Petroleum Engineers (SPE)
Pages578-586
Number of pages9
ISBN (Print)9781617827426
DOIs
Publication statusPublished - 1 Jan 2011
Externally publishedYes

Publication series

NameProceedings - SPE International Symposium on Oilfield Chemistry
Volume2
ISSN (Print)1046-1779

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