Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
PRELIMINARY STUDIES IN THE COMPUTATIONAL MODELING OF A SAFETY VALVE USED IN THE OFFSHORE INDUSTRY
Submission Author:
Marcella Silva , DF
Co-Authors:
Marcella Silva, LEONEL LEONARDO DELGADO-MORALES, André Nepomuceno
Presenter: Marcella Silva
doi://10.26678/ABCM.COBEM2017.COB17-1106
Abstract
Blowout Preventer (BOP) valves were designed to trigger in emergencies situations by applying a compression force on the drill pipe, which will cause plastic deformation until its rupture. According to the report on the execution of Norske Veritas in 2011, the photographic records of the pipeline showed that the BOP have worked nevertheless did not act properly, it only carried out a crushing of the material instead of sealing the tube. As a result, there are indications failures of the safety device, which can be directly related to the way in which these devices were designed considering the mathematical models used when the failures were initiated. For that reason, it is necessary to launch investigations to propose a design criterion that fulfills the requirements of this type of device, considering that the pipes where the valves act have elastoplastic properties. The objective of this paper is to carry out a preliminary study concerning a computational modeling of measuring valve in the operating stage, simulating the drive and then analyzing the numerical results in the state of the pipe stresses. As an illustration, will be included the geometry of the riser and the rafters that constitute this mechanism, with their correspondents. And according to the preliminaries results, it is possible to evaluate the model used and, subsequently, to carry out necessary modifications to improve the study.
Keywords
modelling, BOP, Failure Criteria, Elastoplastic
