Eventos Anais de eventos
COBEM 2019
25th International Congress of Mechanical Engineering
THERMAL BARRIER FOR PLUG AND ABANDONMENT OF OIL WELLS
Submission Author:
Rafael Gonçalves , RS
Co-Authors:
Rafael Gonçalves, Igor Carvalho, Marcelo De Lemos
Presenter: Rafael Gonçalves
doi://10.26678/ABCM.COBEM2019.COB2019-2448
Abstract
Demand for decommissioning of matured oil fields worldwide has motivated a Plug & Abandonment “wave” that has driven the development of new and disruptive technologies. This work numerically investigates the effect of thermal emitter inside a well, which has the purpose of sealing abandoned wells. The variation of two parameters are studied: heat generation rate and emitter length. The mathematical model involves flow and energy equations, which are discretized using the control volume method and solved by a segregated algorithm. The results indicate that for the cases here tested, both parameters are important to the thermal mechanism. The heat generation rate determine the maximum temperature and cooling time. The emitter length also influence the cooling time and the area of thermal affected zone. Cement seems to be a problem for this new technology due to its low thermal diffusion, so that the heat generated by the emitter can reach the caprock rock and seal the well definitively and safely.
Keywords
decommissioning, Heat transfer, Heat Generation, plug and abandonment
