Banca de DEFESA: TALLYS CELSO MINEIRO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : TALLYS CELSO MINEIRO
DATE: 16/02/2024
TIME: 14:00
LOCAL: Pós-Graduação Engenharia Civil
TITLE:

A Comparative Analysis of Different CO2 Injection Methodologies and Reservoir Temperature in CO2 Plume Dynamics in Heterogeneous Saline Aquifer

KEY WORDS:

GHG emissions; CCS projects; CO2 injections; reservoir temperature; carbon sequestration

PAGES: 81
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

In recognition of the problems created due to massive volume of GHG emissions, such as CO2, into the atmosphere, sustainable projects to capture and retain these types of gases have been sought in recent decades in order to lower their concentration. As part of solution, Carbon Capture and Storage (CCS) technologies arose, which involve the sequestration of CO2 in geological formations. Furthermore, various CO2 injection techniques, such as supercritical CO2, WAG-CO2, or dissolved, can be used for this purpose, which provide a variety of CO2 plume dynamic and risk assessment for the projects. Likewise, depending on the injection process and reservoir temperature, different proportions of structural or stratigraphic, dissolved and residual trapping mechanisms can be achieved. Therefore, by modeling a layered heterogeneous deep saline aquifer and simulating various injection scenarios, this work intends to assess the influence of reservoir temperature regarding three injection methods, supercritical, WAG- CO2 and co-injection. Furthermore, variations in vertical permeability were considered to test the influence involving lithology and permeability variations and fractured cap rocks. The results reveal that as the reservoir temperature rises, so does the CO2 plume mobility inducing a modal lateral expansion growth of 10%, having a significant impact on its dynamics. Regarding the water injection methodologies, the plume diffusion occurs more effectively in the bed bottoms, WAG-CO2 provides utmost results in plume maximum extension and minimum gas saturation, and co-injection improves outstandingly the trapping mechanism in earlier periods of time, knowing that the supercritical mobile phase decreases under these injection conditions.

COMMITTEE MEMBERS:
Externa ao Programa - 1708781 - DEBORA CRISTINA ALMEIDA DE ASSIS - nullPresidente - 1800053 - JOSE ANTONIO BARBOSA
Externo à Instituição - MARCOS ALLYSON FELIPE RODRIGUES - UFRN