Time-lapse seismic modeling assisted by numerical reservoir simulation of water and gas flooding scenarios in oil reservoirs



Document title: Time-lapse seismic modeling assisted by numerical reservoir simulation of water and gas flooding scenarios in oil reservoirs
Journal: Revista brasileira de geofisica
Database: PERIÓDICA
System number: 000340301
ISSN: 0102-261X
Authors: 1
2
1
3
Institutions: 1Universidade Federal da Bahia, Centro Pesquisa em Geofisica e Geologia, Salvador, Bahia. Brasil
2Schlumberger-Venezuela, Data and Consulting Services, Barcelona, Anzoátegui. Venezuela
3University of Wyoming, College of Engineering and Applied Science, Laramie, Wyoming. Estados Unidos de América
Year:
Season: Abr-Jun
Volumen: 26
Number: 2
Pages: 195-209
Country: Brasil
Language: Inglés
Document type: Artículo
Approach: Analítico, descriptivo
English abstract In this project, we link fluid flow simulation results to time-lapse seismic through rock physics and modeling. Our goal is to examine the main effects of permeability barriers on seismic response using fluid flow simulations to generate pressure and saturation fields. To explore this problem, we have carried out water and gas injection numerical experiments in a simple reservoir model which has vertical and horizontal variations of porosity as well as permeability barriers. In each experiment, we change the barrier permeability values. By using fluid substitution theory, Gassmann and patchy models, and Batzle and Wang’s empirical relationship we model the main seismic parameters, such as acoustic impedance and compressional velocity. After that, we generate synthetics seismograms and some contrast sections to compare the seismic images prior and after fluid injection events in subsequent time periods to analyze possible differences in the seismic parameters due to changes in barriers properties
Portuguese abstract No presente trabalho, fazendo-se uso de uma abordagem integrada de simulacao de fluxo em reservatorios, fısica de rochas e modelagem sısmica timelapse , investigam-se os principais efeitos das barreiras de permeabilidade na resposta sısmica, atraes da simulacao de injecao de fluidos. Com o proposito de analisar os efeitos, realizaram-se alguns experimentos sinteticos de injecao de agua e gas em um modelo simples de reservatorio com variacoes laterais e verticais de porosidade e barreira de permeabilidade. O modelo basico foi construıdo levando-se em consideracao alguns cenarios de permeabilidade da barreira. Mediante a teoria da substituicao de fluidos, e utilizando-se algumas relac¸˜oes empıricas que dao conta das propriedades da fase fluıda em funcao da pressao e da temperatura, avaliaram-se, a partir de uma perspectiva dinamica, atributos sısmicos, tais como: velocidade e impedancia acustica
Disciplines: Geociencias,
Ingeniería
Keyword: Geofísica,
Ingeniería petrolera,
Modelos sísmicos,
Simulación de flujo,
Permeabilidad,
Simulación numérica,
Pozos petroleros
Keyword: Earth sciences,
Engineering,
Geophysics,
Petroleum engineering,
Seismic models,
Flow simulation,
Permeability,
Numerical simulation,
Oil wells
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