Banca de DEFESA: ADRIA TAVARES LEITE SILVA

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
STUDENT : ADRIA TAVARES LEITE SILVA
DATE: 27/07/2021
TIME: 14:00
LOCAL: Auditório Pós-Graduação Engenharia Civil - CTG - UFPE
TITLE:

SIMULATION OF FLUID FLOW IN FAULT ZONE WITH DEFORMATION BANDS USING FINITE ELEMENT METHOD WITH EMBEDDED DISCONTINUITIES

KEY WORDS:

Deformation bands, Strong discontinuities, fluid flow, equivalent permeability

PAGES: 80
BIG AREA: Engenharias
AREA: Engenharia Civil
SUMMARY:

Deformation bands are one of the most common structures in fault zones formed inporous sandstone rocks. They are characterized by tabular format, with millimeter to centimeterthickness and reduced permeability and porosity in relation to the host rock.Due to this,deformation bands can affect the rock flow patterns and compartmentalize rocks. Since theyrepresent a small-scale heterogeneity, their incorporation on reservoir simulation is associatedwith high computational cost when deformation band explicit discretization is needed. As analternative, this work proposes to incorporate this type of discontinuity in an implicitly wayusing finite element method with embedded strong discontinuity for hydraulic problems. Thismethod was verified in test models and applied in outcrop models of damage zone in Rio doPeixe Basin. Thereby it was possible to analyze the impact of deformation bands on fluidflow through porous media and how they affect the equivalent permeability and the pressuredistribution field of the domain. The results showed the adopted approach was able to capture theresulting pressure field discontinuity. The main reductors factors of equivalent permeability of themedium were orientation of bands in relation to the flow direction, lateral continuity of the bands,bandpermeabilityvalue,contrastinbetweenbandandhostrockpermeability,andintensityofdeformation bands. Furthermore, in the exposed cases it was observed that deformation bandswereabletocompartmentalizethedomain,behavingasbarriersanddeflectorsofthefluidflow.

BANKING MEMBERS:
Externo à Instituição - FRANCISCO CÉZAR COSTA NOGUEIRA - UFCG
Externa à Instituição - FLÁVIA DE OLIVEIRA LIMA FALCÃO - PETROBRAS
Presidente - 2749584 - IGOR FERNANDES GOMES