Show simple item record

dc.contributor.authorChauhan, Nitesh
dc.date.accessioned2019-01-29T22:08:44Z
dc.date.available2019-01-29T22:08:44Z
dc.date.issued2014-07
dc.identifier.urihttp://hdl.handle.net/11122/9760
dc.descriptionMaster's Project (M.S.) University of Alaska Fairbanks, 2014en_US
dc.description.abstractGeomechanics 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 bbls/day. It is also observed that injection pressure dominates the geomechanics of the reservoir.en_US
dc.language.isoen_USen_US
dc.subjectOil reservoir engineeringen_US
dc.subjectAlaskaen_US
dc.subjectNorth Slopeen_US
dc.subjectOil field floodingen_US
dc.subjectEnhanced oil recoveryen_US
dc.subjectHeavy oilen_US
dc.subjectFormations (Geology)en_US
dc.titleReservoir simulations integrated with geomechanics for West Sak Reservoiren_US
dc.typeMaster's Projecten_US
dc.type.degreems
dc.identifier.departmentDepartment of Petroleum Engineering
dc.contributor.committeeKhataniar, Santanu
dc.contributor.committeeDandekar, Abhijit
dc.contributor.committeePatil, Shirish
refterms.dateFOA2020-03-06T01:32:20Z


Files in this item

Thumbnail
Name:
Chauhan_N_2014.pdf
Size:
12.35Mb
Format:
PDF

This item appears in the following Collection(s)

Show simple item record