Analysis of gas hydrate formation in subsea external sleeve choke

Biao Hu, Hongwu Zhu, Fangling Xu, Youjiang Zhang, Huiqin Lv, Binbin Yin

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

Abstract

Gas hydrates are well-known challenge for subsea gas production and transportation, since the hydrates can plug subsea production equipments with potential risks for safety, environment and economic. In the present paper, combining CFD technology with temperature-pressure curve of natural gas hydrate forming, the hydrate formation in subsea external sleeve choke is studied. The difference between real pressure in the choke and critical pressure of gas hydrate formation is defined as equivalent pressure, based on which a new approach to predict gas hydrate formation called Maximum Equivalent Pressure Method is proposed, and the influence of inlet temperature, outlet pressure and relative opening to the maximum equivalent pressure are investigated. The critical relative opening ranges of gas hydrate formation under conditions of certain inlet temperature and outlet pressure are obtained. In case that the relative opening is within the critical range, there would be no hydrate formation in the choke, otherwise it would generate hydrate.

Original languageEnglish
Title of host publicationFluids Engineering Systems and Technologies
PublisherAmerican Society of Mechanical Engineers(ASME)
ISBN (Electronic)9780791857472
DOIs
Publication statusPublished - 2015
Externally publishedYes
EventASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015 - Houston, United States
Duration: 13 Nov 201519 Nov 2015

Publication series

NameASME International Mechanical Engineering Congress and Exposition, Proceedings (IMECE)
Volume7B-2015

Conference

ConferenceASME 2015 International Mechanical Engineering Congress and Exposition, IMECE 2015
Country/TerritoryUnited States
CityHouston
Period13/11/1519/11/15

ASJC Scopus subject areas

  • Mechanical Engineering

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