Microannulus Formation Mechanism at the Cementing Interface of a Thermal Recovery Well during Cyclic Steam Injection
Joint Authors
Wu, JiWei
Wang, XueGang
Song, Lin
Zhong, ShouMing
Yin, WenFeng
Source
Issue
Vol. 2020, Issue 2020 (31 Dec. 2020), pp.1-11, 11 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2020-02-22
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
During the thermal recovery of heavy oil when using cyclic steam injection technology, a microannulus tends to form at the cementing interface subjected to high temperature and pressure during steam injection, and large temperature and pressure differences after injection can lead to wellbore integrity failure.
In this study, a thermomechanical coupled finite element casing-cement-formation model of a thermal recovery wellbore is established.
The deformation of the wellbore during both the steam injection stage and the steam shutdown stage is analyzed.
The microannulus formation mechanism at the cementing interface of the wellbore is studied.
During steam injection, under the large thermomechanical coupling load, the wellbore generates a high stress that leads to elastic-plastic deformation.
In the steam shutdown stage, with the load on the wellbore decreasing, elastic deformation recovers mostly, while plastic deformation continues.
If the plastic deformation is large enough, a microannulus will form at the cementing interface.
Increasing the elastic moduli of the casing, cement, and the formation can enlarge their plastic deformation during steam injection.
The increase of plastic deformation of the cement or formation can enlarge the microannulus of the casing-cement interface or the cement-formation interface correspondingly in the steam shutdown stage.
American Psychological Association (APA)
Wu, JiWei& Wang, XueGang& Song, Lin& Zhong, ShouMing& Yin, WenFeng. 2020. Microannulus Formation Mechanism at the Cementing Interface of a Thermal Recovery Well during Cyclic Steam Injection. Advances in Civil Engineering،Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1122868
Modern Language Association (MLA)
Wu, JiWei…[et al.]. Microannulus Formation Mechanism at the Cementing Interface of a Thermal Recovery Well during Cyclic Steam Injection. Advances in Civil Engineering No. 2020 (2020), pp.1-11.
https://search.emarefa.net/detail/BIM-1122868
American Medical Association (AMA)
Wu, JiWei& Wang, XueGang& Song, Lin& Zhong, ShouMing& Yin, WenFeng. Microannulus Formation Mechanism at the Cementing Interface of a Thermal Recovery Well during Cyclic Steam Injection. Advances in Civil Engineering. 2020. Vol. 2020, no. 2020, pp.1-11.
https://search.emarefa.net/detail/BIM-1122868
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1122868