A Numerical Study on the Application of Stress Cage Technology

Lost circulation is considered a time-consuming, costly problem during the construction of oil and gas wells. There are several preventive techniques to mitigate this problem. Stress cage technology is a mechanical lost circulation method, in which the formation at the wellbore wall is strengthened...

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Main Authors: Pouya Abdollahpour, Seyyed Shahab Tabatabaee Moradi, Ekaterina Leusheva, Valentin Morenov
Format: Article
Language:English
Published: MDPI AG 2022-07-01
Series:Energies
Subjects:
Online Access:https://www.mdpi.com/1996-1073/15/15/5439
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author Pouya Abdollahpour
Seyyed Shahab Tabatabaee Moradi
Ekaterina Leusheva
Valentin Morenov
author_facet Pouya Abdollahpour
Seyyed Shahab Tabatabaee Moradi
Ekaterina Leusheva
Valentin Morenov
author_sort Pouya Abdollahpour
collection DOAJ
description Lost circulation is considered a time-consuming, costly problem during the construction of oil and gas wells. There are several preventive techniques to mitigate this problem. Stress cage technology is a mechanical lost circulation method, in which the formation at the wellbore wall is strengthened to stop the creation of induced fractures as one of the main causes of lost circulation. In this research, a two-dimensional numerical model, considering the elastic, poro-elastic, and thermo-poro-elastic behavior of the rock, is built to investigate the effectiveness of the stress cage method. Results show that better performance of the technology is achieved if the fractures are bridged close to their apertures. Additionally, it was found that the difference between the elastic, poro-elastic, and thermo-poro-elastic models is slightly visible. The conclusion states that the application of the stress cage methods leads to an increase in hoop stress and subsequent formation fracture gradient.
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spelling doaj.art-90015692fd1240809cc7ba72a127c06c2023-12-03T12:35:07ZengMDPI AGEnergies1996-10732022-07-011515543910.3390/en15155439A Numerical Study on the Application of Stress Cage TechnologyPouya Abdollahpour0Seyyed Shahab Tabatabaee Moradi1Ekaterina Leusheva2Valentin Morenov3Faculty of Petroleum and Natural Gas Engineering, Sahand University of Technology, Tabriz 5331817634, IranFaculty of Petroleum and Natural Gas Engineering, Sahand University of Technology, Tabriz 5331817634, IranPetroleum Engineering Department, Saint Petersburg Mining University, 199106 St. Petersburg, RussiaPetroleum Engineering Department, Saint Petersburg Mining University, 199106 St. Petersburg, RussiaLost circulation is considered a time-consuming, costly problem during the construction of oil and gas wells. There are several preventive techniques to mitigate this problem. Stress cage technology is a mechanical lost circulation method, in which the formation at the wellbore wall is strengthened to stop the creation of induced fractures as one of the main causes of lost circulation. In this research, a two-dimensional numerical model, considering the elastic, poro-elastic, and thermo-poro-elastic behavior of the rock, is built to investigate the effectiveness of the stress cage method. Results show that better performance of the technology is achieved if the fractures are bridged close to their apertures. Additionally, it was found that the difference between the elastic, poro-elastic, and thermo-poro-elastic models is slightly visible. The conclusion states that the application of the stress cage methods leads to an increase in hoop stress and subsequent formation fracture gradient.https://www.mdpi.com/1996-1073/15/15/5439lost circulationwellbore strengtheningkirsch equationstresses around the borehole
spellingShingle Pouya Abdollahpour
Seyyed Shahab Tabatabaee Moradi
Ekaterina Leusheva
Valentin Morenov
A Numerical Study on the Application of Stress Cage Technology
Energies
lost circulation
wellbore strengthening
kirsch equation
stresses around the borehole
title A Numerical Study on the Application of Stress Cage Technology
title_full A Numerical Study on the Application of Stress Cage Technology
title_fullStr A Numerical Study on the Application of Stress Cage Technology
title_full_unstemmed A Numerical Study on the Application of Stress Cage Technology
title_short A Numerical Study on the Application of Stress Cage Technology
title_sort numerical study on the application of stress cage technology
topic lost circulation
wellbore strengthening
kirsch equation
stresses around the borehole
url https://www.mdpi.com/1996-1073/15/15/5439
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