Banca de DEFESA: DÁRIO GUEDES MIRANDA DE ASSUNÇÃO

Uma banca de DEFESA de MESTRADO foi cadastrada pelo programa.
DISCENTE : DÁRIO GUEDES MIRANDA DE ASSUNÇÃO
DATA : 25/09/2016
HORA: 14:30
LOCAL: Auditório do Departamento de Geofísica (1º andar)
TÍTULO:

Analysis of the source scanning technique withpossible identified p-wave, for potential use in microssesmic monitoring. 

PALAVRAS-CHAVES:

Microseismic Monitoring; Hydraulic fracturing; SSA; Possible P-wave identifier. 

PÁGINAS: 67
GRANDE ÁREA: Ciências Exatas e da Terra
ÁREA: Geociências
RESUMO:

The research and development oftechniques of stimulation of oil reservoirs, that are no longer economicallyviable due to the low relative permeability, through of hydraulic fracturing,leveraged world production rates in recent years. The monitoring microseismicsevents, generated in this production environment, can provide important informationabout the reservoir. The application of microseismic monitoring, related to theinjection of fluids, is being increasingly recurrent in the oil industry due tothe capacity of this information assist in the development of the reservoir,the placement decision of new injections of fluid, location of newperforations, among others. 

The development andimprovement of methods in microseismicmonitoring is an important alternative of search for help in the development ofproducing oil fields, due to lack of methods that have low cost and so makespossible its use in fields low production. Thus, we propose in this paper ananalysis of the computational viability and efficient in the use of thetechnical SSA with possible P-wave identifier, for possible use in monitoringmicroseismic events in environments with hydraulic fracturing operations. 

The computational processing wasdivided into three phases, two with synthetic data tests and one with real dataapplication of perforating shot (cannonade shot). In the first phase ofsynthetic tests were analyzed positioning errors and origin time errors of anevent (with real position at x = 0, y = 0 and z = -1km) with 3 and 08 receptors(different geometry of the real data) for different data and input parameters,for example, data without noise, data with noise (2, 5, 10, 20, 30 and 40%),different windows RPA/LPA, different amounts receptors, etc. In the secondphase synthetic test were analyzed the positioning errors of an event (withreal position x = 0, y = 0 and z = -0,7km) with 3 and 12 receptors (geometrysimilar to the real data), for only a data with random noise of 40% anddifferent windows of RPA/LPA. And in the phase of real data test (13 differentevents positioned at x = 0, y = 0 and Z = different depths) analyzes were made withrespect the results for event each positioning and origin times found for eachevent, using only one RPA/LPA window. 

MEMBROS DA BANCA:
Presidente - 1451214 - ADERSON FARIAS DO NASCIMENTO
Interno - 346467 - JOAQUIM MENDES FERREIRA
Externo à Instituição - MARCELO BELENTANI DE BIANCHI - USP