Relative Pressure Drop Model for Hydrate Formation and Transportability in Flowlines in High Water Cut Systems

Trung-Kien Pham, Ana Cameirao, Aline Melchuna, Jean-Michel Herri and Philippe Glénat
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Trung-Kien Pham: Centre SPIN, Laboratoire LGF (UMR 5307), Ecole Nationale Supérieure des Mines de Saint-Etienne, 158 Cours Fauriel, 42023 Saint-Etienne, France
Ana Cameirao: Centre SPIN, Laboratoire LGF (UMR 5307), Ecole Nationale Supérieure des Mines de Saint-Etienne, 158 Cours Fauriel, 42023 Saint-Etienne, France
Aline Melchuna: Centre SPIN, Laboratoire LGF (UMR 5307), Ecole Nationale Supérieure des Mines de Saint-Etienne, 158 Cours Fauriel, 42023 Saint-Etienne, France
Jean-Michel Herri: Centre SPIN, Laboratoire LGF (UMR 5307), Ecole Nationale Supérieure des Mines de Saint-Etienne, 158 Cours Fauriel, 42023 Saint-Etienne, France
Philippe Glénat: TOTAL S.A., CSTJF, Avenue Larribau, CEDEX 64018 Pau, France

Energies, 2020, vol. 13, issue 3, 1-10

Abstract: Today, oil and gas fields gradually become mature with a high amount of water being produced (water cut (WC)), favoring conditions for gas hydrate formation up to the blockage of pipelines. The pressure drop is an important parameter which is closely related to the multiphase flow characteristics, risk of plugging and security of flowlines. This study developed a model based on flowloop experiments to predict the relative pressure drop in pipelines once hydrate is formed in high water cutsystems in the absence and presence of AA-LDHI and/or salt. In this model, the relative pressure drop during flow is a function of hydrate volume and hydrate agglomerate structure, represented by the volume fraction factor ( K v ). This parameter is adjusted for each experiment between 1.00 and 2.74. The structure of the hydrate agglomerates can be predicted from the measured relative pressure drop as well as their impact on the flow, especially in case of a homogeneous suspension of hydrates in the flow.

Keywords: gas hydrates; agglomerate structures; suspension; hydrate slurry transport; multiphase flow; relative pressure drop (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2020
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