Optimizing seat and ball combination of actual gas lift valve: An experimental and CFD simulation study

Ehsanul Kabir, Hossein Emadi, Phillip McElroy, Fathi Elldakli, Matt Young

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

Abstract

In this paper, comprehensive experimental and simulation studies were conducted to determine the optimum combination of seat and ball for actual gas lift valve (GLV). The experiments were run for multiple ball and seat sizes to cover the whole gamut of industrially used GLVs. A numerical model, built based on computational fluid dynamics (CFD), was validated first using experimental results. The difference between experimental and simulation runs for multiple cases was found to be maximum 5%. Finally, results from both simulations and experiments were utilized to determine the optimum seat and ball geometries. From the actual GLV experiments and the simulations, it was concluded that the optimum port top diameter (PTD) of the seat is 2/16-inch larger than the port bottom diameter (PBD) when used in combination with a ball that is 1/16-inch larger in dimeter than the PBD. It was also concluded that, with the aforementioned optimum combination of the ball and the seat, the entirely beveled seats perform better than both the partially beveled seats and the sharp edge seats. This optimum combination of the ball and the seat resulted in a GLV gas throughput improvement of more than 27% over the currently used design in the industry for 5/16-inch port seat. For larger port seats, this improvement is expected to be even greater.

Original languageEnglish
Title of host publicationSociety of Petroleum Engineers - SPE Artificial Lift Conference and Exhibition - Americas 2020, ALCE 2020
PublisherSociety of Petroleum Engineers
ISBN (Electronic)9781613997147
StatePublished - 2020
EventSPE Artificial Lift Conference and Exhibition - Americas 2020, ALCE 2020 - Virtual, Online
Duration: Nov 10 2020Nov 12 2020

Publication series

NameSociety of Petroleum Engineers - SPE Artificial Lift Conference and Exhibition - Americas 2020, ALCE 2020

Conference

ConferenceSPE Artificial Lift Conference and Exhibition - Americas 2020, ALCE 2020
CityVirtual, Online
Period11/10/2011/12/20

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