Reservoir simulations integrated with geomechanics for West Sak Reservoir
Master's Project (M.S.) University of Alaska Fairbanks, 2014 Geomechanics is the study of the mechanical behavior of geologic formations. Geomechanics plays an important role in the life of a well. Without a proper understanding of the geomechanics of a reservoir, the projects associated with i...
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ftunivalaska:oai:scholarworks.alaska.edu:11122/9760 2023-05-15T13:09:12+02:00 Reservoir simulations integrated with geomechanics for West Sak Reservoir Chauhan, Nitesh Khataniar, Santanu Dandekar, Abhijit Patil, Shirish 2014-07 http://hdl.handle.net/11122/9760 en_US eng http://hdl.handle.net/11122/9760 Department of Petroleum Engineering Oil reservoir engineering Alaska North Slope Oil field flooding Enhanced oil recovery Heavy oil Formations (Geology) Master's Project ms 2014 ftunivalaska 2023-02-23T21:37:20Z Master's Project (M.S.) University of Alaska Fairbanks, 2014 Geomechanics is the study of the mechanical behavior of geologic formations. Geomechanics plays an important role in the life of a well. Without a proper understanding of the geomechanics of a reservoir, the projects associated with it may run into problems related to drilling, completion, and production. Geomechanics is important for issues such as wellbore integrity, sand production, and recovery in heavy oil reservoirs. While studying geomechanics, proper weight is given to mechanical properties such as effective mean stress, volumetric strain, etc., and the changes that these properties cause in other properties such as porosity, permeability, and yield state. The importance of analyzing geomechanics increases for complex reservoirs or reservoirs with heavy oil. This project is a case study of the West Sak reservoir in the North Slope of Alaska. Waterflooding has been implemented as enhanced oil recovery method in the reservoir. In this study, a reservoir model is built to understand the behavior and importance of geomechanics for the reservoir. First, a fluid model is built. After that, reservoir simulation is carried out by building two cases: one coupled with geomechanics and one without geomechanics. Coupling geomechanics to simulations led to the consideration of many important mechanical properties such as stress, strain, subsidence etc. Once the importance of considering geomechanical properties is established, different injection and production pressure ranges are used to understand how pressure ranges affect the geomechanical properties. The sensitivity analysis defines safer pressure ranges contingent on whether the formation is yielding or not. The yielding criterion is based on Mohr's Coulomb failure criteria. In the case of waterflooding, injection pressure should be maintained at 3800 psi or lower and production at 1600 psi or higher. And if injection rates are used as the operating parameter, it should be maintained below 1000 ... Other/Unknown Material Alaska North Slope north slope Alaska University of Alaska: ScholarWorks@UA Fairbanks Psi ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
institution |
Open Polar |
collection |
University of Alaska: ScholarWorks@UA |
op_collection_id |
ftunivalaska |
language |
English |
topic |
Oil reservoir engineering Alaska North Slope Oil field flooding Enhanced oil recovery Heavy oil Formations (Geology) |
spellingShingle |
Oil reservoir engineering Alaska North Slope Oil field flooding Enhanced oil recovery Heavy oil Formations (Geology) Chauhan, Nitesh Reservoir simulations integrated with geomechanics for West Sak Reservoir |
topic_facet |
Oil reservoir engineering Alaska North Slope Oil field flooding Enhanced oil recovery Heavy oil Formations (Geology) |
description |
Master's Project (M.S.) University of Alaska Fairbanks, 2014 Geomechanics is the study of the mechanical behavior of geologic formations. Geomechanics plays an important role in the life of a well. Without a proper understanding of the geomechanics of a reservoir, the projects associated with it may run into problems related to drilling, completion, and production. Geomechanics is important for issues such as wellbore integrity, sand production, and recovery in heavy oil reservoirs. While studying geomechanics, proper weight is given to mechanical properties such as effective mean stress, volumetric strain, etc., and the changes that these properties cause in other properties such as porosity, permeability, and yield state. The importance of analyzing geomechanics increases for complex reservoirs or reservoirs with heavy oil. This project is a case study of the West Sak reservoir in the North Slope of Alaska. Waterflooding has been implemented as enhanced oil recovery method in the reservoir. In this study, a reservoir model is built to understand the behavior and importance of geomechanics for the reservoir. First, a fluid model is built. After that, reservoir simulation is carried out by building two cases: one coupled with geomechanics and one without geomechanics. Coupling geomechanics to simulations led to the consideration of many important mechanical properties such as stress, strain, subsidence etc. Once the importance of considering geomechanical properties is established, different injection and production pressure ranges are used to understand how pressure ranges affect the geomechanical properties. The sensitivity analysis defines safer pressure ranges contingent on whether the formation is yielding or not. The yielding criterion is based on Mohr's Coulomb failure criteria. In the case of waterflooding, injection pressure should be maintained at 3800 psi or lower and production at 1600 psi or higher. And if injection rates are used as the operating parameter, it should be maintained below 1000 ... |
author2 |
Khataniar, Santanu Dandekar, Abhijit Patil, Shirish |
format |
Other/Unknown Material |
author |
Chauhan, Nitesh |
author_facet |
Chauhan, Nitesh |
author_sort |
Chauhan, Nitesh |
title |
Reservoir simulations integrated with geomechanics for West Sak Reservoir |
title_short |
Reservoir simulations integrated with geomechanics for West Sak Reservoir |
title_full |
Reservoir simulations integrated with geomechanics for West Sak Reservoir |
title_fullStr |
Reservoir simulations integrated with geomechanics for West Sak Reservoir |
title_full_unstemmed |
Reservoir simulations integrated with geomechanics for West Sak Reservoir |
title_sort |
reservoir simulations integrated with geomechanics for west sak reservoir |
publishDate |
2014 |
url |
http://hdl.handle.net/11122/9760 |
long_lat |
ENVELOPE(-63.000,-63.000,-64.300,-64.300) |
geographic |
Fairbanks Psi |
geographic_facet |
Fairbanks Psi |
genre |
Alaska North Slope north slope Alaska |
genre_facet |
Alaska North Slope north slope Alaska |
op_relation |
http://hdl.handle.net/11122/9760 Department of Petroleum Engineering |
_version_ |
1766166842919878656 |