Critical review &amp; comparison of severe slugging mitigation techniques

Banjara, V.; Pereyra, E.; Avila, C.; Sarica, C.

doi:10.1016/j.geoen.2023.212082

Geoenergy Science and Engineering

2023

DOI: 10.1016/j.geoen.2023.212082

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Critical review & comparison of severe slugging mitigation techniques

V. Banjara,

E. Pereyra,

C. Avila

et al.

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Cited by 3 publications

References 11 publications

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Experimental investigation of online solving for critical valve opening for eliminating severe slugging in pipeline-riser systems

Wang,

Zou,

Liu

et al. 2024

International Journal of Heat and Fluid Flow

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Experimental investigation of online solving for critical valve opening for eliminating severe slugging in pipeline-riser systems

Wang,

Zou,

Liu

et al. 2024

International Journal of Heat and Fluid Flow

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Effects of riser height and pipeline length on the transition boundary and frequency of severe slugging in offshore pipelines

Yu,

Xu,

Cao

et al. 2024

Ocean Engineering

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An insight into the severe slugging characteristics in a catenary flexible riser

Zhu,

Hu,

Gao

et al. 2023

Physics of Fluids

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This paper reports the experimental results of the severe slugging (SS) flow characteristics in a downward inclined pipeline-catenary flexible riser system. The non-intrusive optical measurement with high-speed cameras was employed to capture the evolution of liquid slugs and the gas–liquid interface. Five SS patterns are identified in the considered flow velocity range. There are two kinds of severe slugging I (SSI-1 and SSI-2) with the essential difference in the occurrence of the fast blockage stage before the slug formation (SF) stage. The severe slugging II (SSII) is characterized with the longest liquid slug less than a riser length and the absence of slug production stage. The liquid slug is further shortened in severe slugging III (SSIII), exhibiting local liquid fallback and accumulation of multiple slugs in the riser. The severe slugging transition (SST) occurs due to the switching between the SSI-1 and SSII. The flow regime partition is plotted in the vsl (liquid superficial velocity)–vsg (gas superficial velocity) diagram, presenting alteration as the inclination angle of upstream pipeline varies. Generally, the SSI is easier to form at a higher inclination angle. The intermittent occurrence of hydrodynamic slug in the upstream pipeline in the SF stage contributes to the appearance of SSI-2 to SST. The SS cycle has approximately a negative exponent relation with vsg, while the riser base pressure changes exponentially with the increase in vsl.

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Critical review & comparison of severe slugging mitigation techniques

Cited by 3 publications

References 11 publications

Experimental investigation of online solving for critical valve opening for eliminating severe slugging in pipeline-riser systems

Experimental investigation of online solving for critical valve opening for eliminating severe slugging in pipeline-riser systems

Effects of riser height and pipeline length on the transition boundary and frequency of severe slugging in offshore pipelines

An insight into the severe slugging characteristics in a catenary flexible riser

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