Title

Laboratory study of hydrogen sulfide removal in slug flows in a high pressure crude oil loop

Authors

Authors

J. Lee;R. Kumar

Comments

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Abbreviated Journal Title

Cryst. Growth Des.

Keywords

two phase flow; hydrogen sulfide in crude oil; high pressure loop; Energy & Fuels; Engineering, Petroleum

Abstract

Hydrogen sulfide (H2S) undergoes decompression during petroleum extraction from oil reservoirs, during which a certain amount of H2S-scavenging liquid compound is added to absorb H2S in the pipelines. All experiments were conducted in a high pressure flow loop with a thousand feet of coiled tubing to simulate the horizontal section of the pipeline that runs along the ocean floor from the reservoir at 20 bar (1 bar = 101.3 kpa) and room temperature with a 40 ppm H2S gas concentration in nitrogen (N-2). This paper reports experimental results on the role of superficial liquid and gas velocities (0.2-0.5 m/s and 0.4-1.1 m/s) on H2S removal. All experimental tests were conducted in the slug flow regime, thus this paper also reports the effects of pressure and the distance to which this flow regime prolongs, which is correlated to the H2S removal efficiency. Results indicate that an increase in superficial gas velocity at low superficial liquid velocity decreases the scavenger efficiency while the opposite is seen at high superficial liquid velocity. In addition, an increase in pressure shifts the transition zones in the flow regime altering the scavenger efficiency. (C) 2013 Elsevier B.V. All rights reserved.

Journal Title

Journal of Petroleum Science and Engineering

Volume

J. Pet. Sci. Eng.

Publication Date

1-1-2013

Document Type

Article

Language

English

First Page

72

Last Page

79

WOS Identifier

103

ISSN

0920-4105

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