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Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method

Accurate evaluation of failure pressure is crucial in the design of injection wells. Besides, in-situ stresses play an important role in obtaining the results. Pressure and rock stresses are related together as the role of effective-stress theorem. In fact, pressure changes with stress alteration ca...

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Main Authors: Bataee, M., Irawan, S., Ridha, S., Hematpour, H., Hamdi, Z.
Format: Article
Published: Society of Petroleum Engineers 2017
Online Access:https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012956263&doi=10.2118%2f183627-PA&partnerID=40&md5=0dbfb1b3c45845f911e0971b9dfb353f
http://eprints.utp.edu.my/19617/
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spelling my.utp.eprints.196172018-04-20T07:16:36Z Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method Bataee, M. Irawan, S. Ridha, S. Hematpour, H. Hamdi, Z. Accurate evaluation of failure pressure is crucial in the design of injection wells. Besides, in-situ stresses play an important role in obtaining the results. Pressure and rock stresses are related together as the role of effective-stress theorem. In fact, pressure changes with stress alteration caused by change in porosity and permeability. Therefore, it should be obtained with the coupling method. Moreover, to calculate pressure, temperature, and stress in the fully coupling method, a huge matrix should be solved, and it takes long processing time to implement it. Therefore, this study developed a wellbore geomechanical model for stability during injection by use of the iterative coupling method. The processing speed was enhanced in this study because the parameters were calculated separately. The parameters of pressure, temperature, saturation, and stress were obtained for the multiphase-flow condition with numerical modeling. Furthermore, in this study, the finite-difference method (FDM) had been used to solve pressure, temperature, and saturation, whereas the finite-volume method (FVM) was applied to solve the wellbore stress. On top of that, the iterative coupling method was used to improve the accuracy of the stress results. As a result, a correction of approximately 20 psi (0.14 MPa) was noted for pressure in relation to stress, which is 1 psi (6.89 kPa). Moreover, the Drucker-Prager failure criterion was used to model the fracturing on the basis of the stress results. Other than that, sensitivity analysis on horizontal maximum (o-H) and minimum (o-h) stresses showed that by increasing O-H, the maximum injection pressures to avoid fracturing had been reduced, whereas in the case for O-h, an increment was observed. Copyright © 2017 Society of Petroleum Engineers. Society of Petroleum Engineers 2017 Article PeerReviewed https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012956263&doi=10.2118%2f183627-PA&partnerID=40&md5=0dbfb1b3c45845f911e0971b9dfb353f Bataee, M. and Irawan, S. and Ridha, S. and Hematpour, H. and Hamdi, Z. (2017) Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method. SPE Journal, 22 (1). pp. 172-183. http://eprints.utp.edu.my/19617/
institution Universiti Teknologi Petronas
building UTP Resource Centre
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Teknologi Petronas
content_source UTP Institutional Repository
url_provider http://eprints.utp.edu.my/
description Accurate evaluation of failure pressure is crucial in the design of injection wells. Besides, in-situ stresses play an important role in obtaining the results. Pressure and rock stresses are related together as the role of effective-stress theorem. In fact, pressure changes with stress alteration caused by change in porosity and permeability. Therefore, it should be obtained with the coupling method. Moreover, to calculate pressure, temperature, and stress in the fully coupling method, a huge matrix should be solved, and it takes long processing time to implement it. Therefore, this study developed a wellbore geomechanical model for stability during injection by use of the iterative coupling method. The processing speed was enhanced in this study because the parameters were calculated separately. The parameters of pressure, temperature, saturation, and stress were obtained for the multiphase-flow condition with numerical modeling. Furthermore, in this study, the finite-difference method (FDM) had been used to solve pressure, temperature, and saturation, whereas the finite-volume method (FVM) was applied to solve the wellbore stress. On top of that, the iterative coupling method was used to improve the accuracy of the stress results. As a result, a correction of approximately 20 psi (0.14 MPa) was noted for pressure in relation to stress, which is 1 psi (6.89 kPa). Moreover, the Drucker-Prager failure criterion was used to model the fracturing on the basis of the stress results. Other than that, sensitivity analysis on horizontal maximum (o-H) and minimum (o-h) stresses showed that by increasing O-H, the maximum injection pressures to avoid fracturing had been reduced, whereas in the case for O-h, an increment was observed. Copyright © 2017 Society of Petroleum Engineers.
format Article
author Bataee, M.
Irawan, S.
Ridha, S.
Hematpour, H.
Hamdi, Z.
spellingShingle Bataee, M.
Irawan, S.
Ridha, S.
Hematpour, H.
Hamdi, Z.
Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method
author_facet Bataee, M.
Irawan, S.
Ridha, S.
Hematpour, H.
Hamdi, Z.
author_sort Bataee, M.
title Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method
title_short Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method
title_full Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method
title_fullStr Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method
title_full_unstemmed Wellbore failure during water-alternating-gas injection by use of flow-stress coupling method
title_sort wellbore failure during water-alternating-gas injection by use of flow-stress coupling method
publisher Society of Petroleum Engineers
publishDate 2017
url https://www.scopus.com/inward/record.uri?eid=2-s2.0-85012956263&doi=10.2118%2f183627-PA&partnerID=40&md5=0dbfb1b3c45845f911e0971b9dfb353f
http://eprints.utp.edu.my/19617/
_version_ 1738656095478480896
score 13.211869

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