Effect of Riser Base and Flowline Gas Injection on the Characteristics of Gas-Liquid Two-Phase Flow in a Vertical Riser System

Salem Kalifa Brini Ahmed, Aliyu Aliyu, Adegboyega B. Ehinmowo, Hoi Yeung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

We report an experimental study has been conducted on a 52 mm internal diameter vertical riser of which is met at the riser base by a 10.5 m long. The effect of two different gas inlet configurations were tested: riser base gas injection and horizontal inline injection 40 meters upstream of the riser base. A 16×16 wire-mesh sensor was used to measure the void fraction at the riser top and we present a detailed analysis of the characteristics of flow because of the injection scheme. These include regimes and cross-sectional void fraction distributions of the time series data. Among our findings are wall-peaking gas fraction profiles at lower gas injection rates through the flowline, while core-peaking profiles were established at the same flow conditions for riser base injection. This provides valuable information that can feed into the design of downstream facilities such as slug catchers and separators.
Original languageEnglish
Title of host publicationSPE Nigeria Annual International Conference and Exhibition 2020, NAIC 2020
PublisherSociety of Petroleum Engineers (SPE)
Number of pages8
ISBN (Electronic)9781613997857
DOIs
Publication statusPublished - 2020
EventSPE Nigeria Annual International Conference and Exhibition 2020 - Virtual, Online, Nigeria
Duration: 11 Aug 202013 Aug 2020

Conference

ConferenceSPE Nigeria Annual International Conference and Exhibition 2020
Abbreviated titleNAIC 2020
CountryNigeria
CityVirtual, Online
Period11/08/2013/08/20

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