Computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow
ABSTRACT Computed tomography scan imaging techniques have been used on core samples to investigate the effect of natural open fractures on reservoir flow in the Snøhvit Gas Condensate Field. Firstly, computed tomography (CT) scanning was used to describe the 3D geometrical properties of the fracture...
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crwiley:10.1111/j.1365-2478.2009.00784.x 2024-09-09T20:08:12+00:00 Computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow Wennberg, Ole Petter Rennan, Lars Basquet, Remy 2009 http://dx.doi.org/10.1111/j.1365-2478.2009.00784.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2478.2009.00784.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2478.2009.00784.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Geophysical Prospecting volume 57, issue 2, page 239-249 ISSN 0016-8025 1365-2478 journal-article 2009 crwiley https://doi.org/10.1111/j.1365-2478.2009.00784.x 2024-07-25T04:23:42Z ABSTRACT Computed tomography scan imaging techniques have been used on core samples to investigate the effect of natural open fractures on reservoir flow in the Snøhvit Gas Condensate Field. Firstly, computed tomography (CT) scanning was used to describe the 3D geometrical properties of the fracture network including orientation and fracture density. Two types of fractures were observed: F1 fractures are short and stylolite related and F2 fractures are longer, cross‐cutting the core and without any obvious relationship to stylolites. Secondly, monitoring of single and two phase flow experiments on samples containing these two types of natural open fractures was performed under 10 and 80 bar net confining pressure while using CT scanning. 1‐phase miscible flooding experiment shows approximately 3 times higher flooding velocity in an open F2 fracture than in the matrix. 2‐phase flooding by gas injection into a 100% water saturated core gave early gas breakthrough due to flow in the fracture and thereafter very little water production. The flow experiments showed that the presence of open fractures has a significant local effect on fluid flow even in a case with relatively high matrix porosity (200–300 mD). The sample containing F1 fractures showed a complex flow pattern influenced both by open fractures and stylolites. The CT scan data enables an exact representation of the fracture network in core scale simulation models and therefore improves the understanding of fracture influence on flow in a fractured porous medium. CT scanning of core samples provides an effective tool for integrating geology and fluid flow properties of a porous fractured medium. Article in Journal/Newspaper Snøhvit Wiley Online Library Geophysical Prospecting 57 2 239 249 |
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English |
description |
ABSTRACT Computed tomography scan imaging techniques have been used on core samples to investigate the effect of natural open fractures on reservoir flow in the Snøhvit Gas Condensate Field. Firstly, computed tomography (CT) scanning was used to describe the 3D geometrical properties of the fracture network including orientation and fracture density. Two types of fractures were observed: F1 fractures are short and stylolite related and F2 fractures are longer, cross‐cutting the core and without any obvious relationship to stylolites. Secondly, monitoring of single and two phase flow experiments on samples containing these two types of natural open fractures was performed under 10 and 80 bar net confining pressure while using CT scanning. 1‐phase miscible flooding experiment shows approximately 3 times higher flooding velocity in an open F2 fracture than in the matrix. 2‐phase flooding by gas injection into a 100% water saturated core gave early gas breakthrough due to flow in the fracture and thereafter very little water production. The flow experiments showed that the presence of open fractures has a significant local effect on fluid flow even in a case with relatively high matrix porosity (200–300 mD). The sample containing F1 fractures showed a complex flow pattern influenced both by open fractures and stylolites. The CT scan data enables an exact representation of the fracture network in core scale simulation models and therefore improves the understanding of fracture influence on flow in a fractured porous medium. CT scanning of core samples provides an effective tool for integrating geology and fluid flow properties of a porous fractured medium. |
format |
Article in Journal/Newspaper |
author |
Wennberg, Ole Petter Rennan, Lars Basquet, Remy |
spellingShingle |
Wennberg, Ole Petter Rennan, Lars Basquet, Remy Computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow |
author_facet |
Wennberg, Ole Petter Rennan, Lars Basquet, Remy |
author_sort |
Wennberg, Ole Petter |
title |
Computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow |
title_short |
Computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow |
title_full |
Computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow |
title_fullStr |
Computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow |
title_full_unstemmed |
Computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow |
title_sort |
computed tomography scan imaging of natural open fractures in a porous rock; geometry and fluid flow |
publisher |
Wiley |
publishDate |
2009 |
url |
http://dx.doi.org/10.1111/j.1365-2478.2009.00784.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1111%2Fj.1365-2478.2009.00784.x https://onlinelibrary.wiley.com/doi/pdf/10.1111/j.1365-2478.2009.00784.x |
genre |
Snøhvit |
genre_facet |
Snøhvit |
op_source |
Geophysical Prospecting volume 57, issue 2, page 239-249 ISSN 0016-8025 1365-2478 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1111/j.1365-2478.2009.00784.x |
container_title |
Geophysical Prospecting |
container_volume |
57 |
container_issue |
2 |
container_start_page |
239 |
op_container_end_page |
249 |
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1809941868346081280 |