Skip to main content

Numerical modeling of highly saline wastewater disposal in Northeast British Columbia

Resource type
Thesis type
(Thesis) M.Sc.
Date created
2018-04-26
Authors/Contributors
Abstract
Dense, saline wastewater generated during oil and gas activities (hydraulic fracturing and production) is commonly disposed of in deep formations, but the migration of this wastewater after entering the subsurface is poorly understood. This study uses numerical models to simulate wastewater disposal in the Paddy-Cadotte of Northeast British Columbia using both single-well axisymmetric box models and a regional model of the formation in which multiple disposal and water source wells operate. A sensitivity analysis performed on the box models reveals that dispersivity and permeability exert the strongest control on overall wastewater distribution. Models show that wastewater migrates further than predicted using a simple volumetric calculation, and extends further along the base of the formation than the top due to variations in fluid density. Interference between disposal and source wells is observed to influence wastewater migration, while formation dip and regional groundwater flow have no discernible impact.
Document
Identifier
etd10701
Copyright statement
Copyright is held by the author.
Permissions
This thesis may be printed or downloaded for non-commercial research and scholarly purposes.
Scholarly level
Supervisor or Senior Supervisor
Thesis advisor: Allen, Diana
Member of collection
Download file Size
etd10701_MSimons.pdf 8.11 MB

Views & downloads - as of June 2023

Views: 7
Downloads: 0