Elastoplastic Analysis of Casing Stress in Thermal Recovery

DOI

10.2991/ipemec-15.2015.97How to use a DOI?

Keywords

steam injection wells; casing failure; injection-production cycle; plastic deformation

Abstract

On the basis of the main thermal recovery wells casing damage characteristics, the temperature rise of the casing-cement is clearly defined by the simulation analysis of thermal recovery wells wellbore temperature field at the end of steam injection. Based on the theory of thick wall cylinder in the uniform inside and outside pressure, the paper establishes the elastic mechanical model of the combination composed of casing-cement ring and the surrounding rock, and discusses casing stress distribution in different injection-production cycle, combining with the thermal recovery routine parameters of a certain oilfield. Elastic-plastic analysis model of casing-cement under the condition of rigid formation is established while the pressure of surrounding rock is in the Elastic-plastic zone by using the Tresca yield criterion. The contact stress of casing when only the casing is into plastic state is also deduced, and discusses the degree of plastic yield of casing in different injection-production cycle in perspective of the elastic-plastic analysis.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Shimin Dong
AU  - Jie Yang
PY  - 2015/05
DA  - 2015/05
TI  - Elastoplastic Analysis of Casing Stress in Thermal Recovery
BT  - Proceedings of the 2015 International Power, Electronics and Materials Engineering Conference
PB  - Atlantis Press
SP  - 517
EP  - 523
SN  - 2352-5401
UR  - https://doi.org/10.2991/ipemec-15.2015.97
DO  - 10.2991/ipemec-15.2015.97
ID  - Dong2015/05
ER  -