Banca de QUALIFICAÇÃO: DAVID WENDELL TOMAZ DA SILVA

Uma banca de QUALIFICAÇÃO de MESTRADO foi cadastrada pelo programa.
DISCENTE : DAVID WENDELL TOMAZ DA SILVA
DATA : 25/11/2016
HORA: 09:00
LOCAL: Auditório do DGEF
TÍTULO:

Recovery surface waves from the cross-correlation of seismic ambient noise in an oil field. 

PALAVRAS-CHAVES:

interferometry, hydraulic fracturing, seismic noise

PÁGINAS: 35
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
RESUMO:

Hydraulic fracturing is a technique widely used by the oil industry for the extraction of gas in rocks with low permeability and in recovery of mature fields. This technique increases the productivity of the production of hydrocorbons, however, there are some questions about the impacts caused by the fracture. Therefore, it is increasingly necessary to acquire knowledge about the consequences caused by hydraulic fracturing. In this context, seismic interferometry appears as a low-cost, non-invasive technique capable of obtaining information on the geological structure, velocity of the medium and dimensions of the propagation radius of fractures caused by the fractured fluid, from the cross-correlation of seismic noise in the region affected by hydraulic fracturing. In this work,we recover surface waves from the cross correlation of seismic ambient noise, in an mature oil field where the hydraulic fracturing operations occurs. We used two techniques for cross-correlation: cross-correlation Geometric normalized  (CCGN) and phase cross-correlation (CCP), and both techniques recovered the empirical Green's Function. Seismic noise records allowed the observation of the influence of the hydraulic fracture process on the recovery and inversion of surface waves.

MEMBROS DA BANCA:
Presidente - 1451214 - ADERSON FARIAS DO NASCIMENTO
Interno - 1863578 - JORDI JULIA CASAS
Interno - 349684 - WALTER EUGENIO DE MEDEIROS