Multiscale geomechanical and geochemical studies of unconventional shale reservoirs

Placeholder Show Content


With the advancement of horizontal drilling and hydraulic fracturing, unconventional shale reservoirs are now capable of being drilled faster and produced economically at commercial rates. Although these shale resources are massive in size and globally abundant, they are still being produced with low recovery factors (less than 5\% for shale oil and less than 20\% for shale gas). This low recovery could be attributed to an incomplete understanding of the complex intrinsic properties of shale rocks. In this thesis, I focused on investigating the main factors that control pore volume (porosity) and pore-size distribution of different shale reservoirs and how this variability in pore space can be related to measured permeability and well production. I present in this thesis a laboratory workflow highlighting a series of fluid penetration and permeability measurements performed on multiple shale reservoir samples. My approach looks at characterizing and imaging the nanoscale porosity first to better understand the pore space distribution and building upwards in scale through the permeability measurements. Next, I apply my previous findings towards a specific geochemical application setting involving the hydraulic fracturing fluid composition and its effect on the shale permeability. Lastly, understanding how porosity is distributed across the shale matrix and altered during hydraulic fracturing and throughout production is crucial to identify beforehand as it will have a potential impact on enhancing the recovery factors of producing shales.


Type of resource text
Form electronic resource; remote; computer; online resource
Extent 1 online resource.
Place California
Place [Stanford, California]
Publisher [Stanford University]
Copyright date 2019; ©2019
Publication date 2019; 2019
Issuance monographic
Language English


Author Alalli, Abdulgader Abdullah
Degree supervisor Zoback, Mark D
Thesis advisor Zoback, Mark D
Thesis advisor Beroza, Gregory C. (Gregory Christian)
Thesis advisor Kovscek, Anthony R. (Anthony Robert)
Degree committee member Beroza, Gregory C. (Gregory Christian)
Degree committee member Kovscek, Anthony R. (Anthony Robert)
Associated with Stanford University, Department of Geophysics.


Genre Theses
Genre Text

Bibliographic information

Statement of responsibility Abdulgader A. Alalli.
Note Submitted to the Department of Geophysics.
Thesis Thesis Ph.D. Stanford University 2019.
Location electronic resource

Access conditions

© 2019 by Abdulgader Abdullah Alalli
This work is licensed under a Creative Commons Attribution Non Commercial 3.0 Unported license (CC BY-NC).

Also listed in

Loading usage metrics...