Method calculates sand velocity, hold-up in flowlines

Paul StevensonCentre for Multiphase ProcessesCallaghan, AustraliaRex B. ThorpeUniversity of SurreyGuilDford, UKA relatively simple method of estimating sand velocity and hold-up in multiphase flowlines allows a design engineer to determine whether a producing well needs a sand-exclusion system at a subsea wellhead.Estimating the behavior of sand in multiphase flowlines is difficult and complicated. An estimation of solids rate and in situ hold-up, however, is necessary to determine whether a production operation requires costly sand-exclusion systems.The method presented in this article provides the tools for the engineer to make such an evaluation.Once such estimates have been made, howe...

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