Integrated Geomechanics and Multiporosity Reservoir Simulation: Investigating Improved Oil Recovery by Huff-and-Puff Gas Injection in Shale Petroleum Reservoirs

Fragoso Amaya, Alfonso Rafael

Integrated Geomechanics and Multiporosity Reservoir Simulation: Investigating Improved Oil Recovery by Huff-and-Puff Gas Injection in Shale Petroleum Reservoirs

dc.contributor.advisor	Aguilera, Roberto
dc.contributor.author	Fragoso Amaya, Alfonso Rafael
dc.contributor.committeemember	Moore, Robert Gordon
dc.contributor.committeemember	Mehta, Sudarshan A.
dc.contributor.committeemember	Wong, Ron Chik-Kwong
dc.contributor.committeemember	Camacho-Velazquez, Rodolfo
dc.date	2023-11
dc.date.accessioned	2023-09-14T19:12:12Z
dc.date.available	2023-09-14T19:12:12Z
dc.date.issued	2023-08-30
dc.description.abstract	In shale formations, multiple stress-dependent porosity systems coexist, and fluid flow occurs through several processes that are also affected by rock deformation. This multiporosity, multitransport mechanisms and stress-dependent nature of shale reservoirs must be honored when modeling them. Thus, the objective of this dissertation is to develop an integrated numerical simulator of fluid flow and geomechanics that incorporates several storage and transport mechanisms of shale reservoirs and how they are affected by rock deformation. At the same time, this work investigates huff-and-puff gas injection to improve oil recoveries, which is one of the main challenges of shale play exploitation. This thesis attains these goals by: Introducing a methodology that integrates calculation of stresses and deformation of the fractured porous medium; changes in matrix (organic and inorganic) porosities and permeabilities, and fractures (natural and hydraulic) permeabilities; and their effect on production performance of shale reservoirs by primary recovery and huff-and-puff gas injection. Building a coupled geomechanics-fluid flow model that implements the methodology described above. History matching a huff-and-puff pilot well in the Eagle Ford Shale using multiporosity reservoir simulation and investigating the effect of adsorption and diffusion from solid kerogen. Carrying out a history match of data from a huff-and-puff pilot well in the Eagle Ford Shale using a commercial reservoir simulator and investigating several scenarios with the tuned model. Evaluating possible combinations of huff-and-puff gas injection and hydraulic refracturing to improve oil recoveries in shale reservoirs. It is concluded that the integrated multiporosity, multitransport mechanisms and stress-dependent model developed in this thesis properly evaluates changes that occur in the various porosities and permeabilities, and transport mechanisms in shales during primary production and huff-and-puff gas injection.
dc.identifier.citation	Fragoso Amaya, A. R. (2023). Integrated geomechanics and multiporosity reservoir simulation: investigating improved oil recovery by huff-and-puff gas injection in shale petroleum reservoirs (Doctoral thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.
dc.identifier.uri	https://hdl.handle.net/1880/116936
dc.language.iso	en
dc.publisher.faculty	Graduate Studies
dc.publisher.institution	University of Calgary
dc.rights	University of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.
dc.subject	Geomechanics
dc.subject	Shale Reservoirs
dc.subject	Improved Oil Recovery
dc.subject	Huff-and-Puff
dc.subject	Gas Injection
dc.subject	Reservoir Simulation
dc.subject	Refracturing
dc.subject	Unconventional Reservoirs
dc.subject	Coupling
dc.subject	Rock Mechanics
dc.subject	Adsorption
dc.subject	Diffusion
dc.subject	Numerical Simulation
dc.subject	Finite Elements
dc.subject	Finite Differences
dc.subject	Multiporosity
dc.subject	Huff and Puff
dc.subject.classification	Engineering
dc.subject.classification	Engineering--Petroleum
dc.title	Integrated Geomechanics and Multiporosity Reservoir Simulation: Investigating Improved Oil Recovery by Huff-and-Puff Gas Injection in Shale Petroleum Reservoirs
dc.type	doctoral thesis
thesis.degree.discipline	Engineering – Chemical & Petroleum
thesis.degree.grantor	University of Calgary
thesis.degree.name	Doctor of Philosophy (PhD)
ucalgary.thesis.accesssetbystudent	I do not require a thesis withhold – my thesis will have open access and can be viewed and downloaded publicly as soon as possible.