Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
A Transient Model for Estimating APB in Short Time Operations
Submission Author:
Ianto Martins , SC
Co-Authors:
Ianto Martins, Arthur Pandolfo da Veiga, Eduardo Bader Dalfovo Mohr Alves, Alexandre Kupka da Silva, Jader Riso Barbosa Jr.
Presenter: Jader Riso Barbosa Jr.
doi://10.26678/ABCM.COBEM2019.COB2019-1212
Abstract
A transient heat transfer model based on a literature work is used to simulate the heat transfer on an offshore well. This model consists on separating the well as a sequence of layers, e.g. injection fluid, tubing, annular and casing. Each layer is modeled 1D axially and exchanges heat with adjacent layers through a thermal resistance method, which considers the annular fluids static. The results indicate the injection fluid enters steady state after 1 h. After 6 h, Annular A exchanges more energy with the injection fluid than the others, reaching a steady state. Annular B and C maintain a temperature profile close to the one from the rock formation, due to their proximity. APB was calculated for 6 h time, with Annular B achieving the higher absolute value, highlighting the importance of studying the APB behavior for injection operations also.
Keywords
APB, Transient regime, Heat transfer, Injection well
