Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests
To achieve an acceptable level of zonal isolation, well integrity should be guaranteed in hydrocarbon production and geological CO2 sequestration. Well pressure test can cause different types of failures in the well system leading to leakages through these failures. Laboratory evidences have reveale...
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ftntnutrondheimi:oai:ntnuopen.ntnu.no:11250/2633787 2023-05-15T14:21:42+02:00 Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests Gheibi, Sohrab Sangesland, Sigbjørn Vrålstad, Torbjørn 2019 http://hdl.handle.net/11250/2633787 https://doi.org/10.1115/OMAE2019-96319 eng eng ASME ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2019): Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology urn:isbn:978-0-7918-5887-5 http://hdl.handle.net/11250/2633787 https://doi.org/10.1115/OMAE2019-96319 cristin:1762127 Chapter 2019 ftntnutrondheimi https://doi.org/10.1115/OMAE2019-96319 2019-12-25T23:31:59Z To achieve an acceptable level of zonal isolation, well integrity should be guaranteed in hydrocarbon production and geological CO2 sequestration. Well pressure test can cause different types of failures in the well system leading to leakages through these failures. Laboratory evidences have revealed that occurrence of radial tensile fractures is likely during pressure tests. In this paper, we use a numerical code call MDEM which was formulated based on discrete element method. The code can model discontinuum feature of fractures. A model of a lab-sized pressure test was built and compared to an experiment previously published. The model was tested under different confinement levels and effect of the tensile strength of rock on the radial fracture was investigated at the same lab-scale. Fracture opening profiles are also presented showing the leakage potential of these fractures under different pressure level. publishedVersion Copyright © 2019 by ASME Book Part Arctic NTNU Open Archive (Norwegian University of Science and Technology) Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology |
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Open Polar |
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NTNU Open Archive (Norwegian University of Science and Technology) |
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ftntnutrondheimi |
language |
English |
description |
To achieve an acceptable level of zonal isolation, well integrity should be guaranteed in hydrocarbon production and geological CO2 sequestration. Well pressure test can cause different types of failures in the well system leading to leakages through these failures. Laboratory evidences have revealed that occurrence of radial tensile fractures is likely during pressure tests. In this paper, we use a numerical code call MDEM which was formulated based on discrete element method. The code can model discontinuum feature of fractures. A model of a lab-sized pressure test was built and compared to an experiment previously published. The model was tested under different confinement levels and effect of the tensile strength of rock on the radial fracture was investigated at the same lab-scale. Fracture opening profiles are also presented showing the leakage potential of these fractures under different pressure level. publishedVersion Copyright © 2019 by ASME |
format |
Book Part |
author |
Gheibi, Sohrab Sangesland, Sigbjørn Vrålstad, Torbjørn |
spellingShingle |
Gheibi, Sohrab Sangesland, Sigbjørn Vrålstad, Torbjørn Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests |
author_facet |
Gheibi, Sohrab Sangesland, Sigbjørn Vrålstad, Torbjørn |
author_sort |
Gheibi, Sohrab |
title |
Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests |
title_short |
Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests |
title_full |
Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests |
title_fullStr |
Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests |
title_full_unstemmed |
Numerical Modeling of Radial Fracturing of Cement Sheath Caused by Pressure Tests |
title_sort |
numerical modeling of radial fracturing of cement sheath caused by pressure tests |
publisher |
ASME |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2633787 https://doi.org/10.1115/OMAE2019-96319 |
genre |
Arctic |
genre_facet |
Arctic |
op_relation |
ASME 2019 38th International Conference on Ocean, Offshore and Arctic Engineering (OMAE2019): Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology urn:isbn:978-0-7918-5887-5 http://hdl.handle.net/11250/2633787 https://doi.org/10.1115/OMAE2019-96319 cristin:1762127 |
op_doi |
https://doi.org/10.1115/OMAE2019-96319 |
container_title |
Volume 8: Polar and Arctic Sciences and Technology; Petroleum Technology |
_version_ |
1766294410554769408 |