Eventos Anais de eventos
ENCIT 2018
Brazilian Congress of Thermal Sciences and Engineering
ANALYTICAL TRANSIENT HEAT CONDUCTION THROUGH AN COMPOSITE REGION OF AN INFINITE SOLID CYLINDER WITH A PERFECT THERMAL CONTACT TO A SEMI-INFINITE MEDIUM
Submission Author:
Gabriel Saavedra , SP
Co-Authors:
Gabriel Saavedra, Marcelo De Lemos
Presenter: Gabriel Saavedra
doi://10.26678/ABCM.ENCIT2018.CIT18-0799
Abstract
Aiming the development of new technologies for the petrol field operations, an innovative method to tamponing oils wells is being studied due to significant advantages over the traditional cementing procedures. In a general context, a cylinder positioned at the well hole will work, initially, as a vessel for a fluid composed of chemical species capable to generate such an intense heat after an exothermic reaction, so that a strong heat source will flow by conduction throughout the composite region from the inner wall of the cylinder to the outer surface that has a perfect thermal contact with the surroundings geological formation, which will be exposed to high values of temperatures after a certain period of time. The magnitude of the temperature will be sufficient to reach the melting temperature of the cap rock, causing the vitrification and so resulting in the complete well sealing. Carrying out an unprecedent study, the present methodology will investigate which analytical approach will provide the most realistic and bests results in the existing literature by a comparison made between two mathematical techniques for the transient conduction flow through composite regions: The generalized orthogonal expansion technique utilized in deriving the solution and the Laplace transform for solving semi-infinite and infinite medium problems.
Keywords
Tamponing Oil Wells, Conduction Flow, heat source, Composite Region, Orthogonal Expansion Technique, Laplace Transform
