| Revista: | Revista brasileira de geofisica |
| Base de datos: | PERIÓDICA |
| Número de sistema: | 000338722 |
| ISSN: | 0102-261X |
| Autores: | Sancevero, Sergio Sacani1 Remacre, Armando Zaupa1 Portugal, Rodrigo de Souza1 |
| Instituciones: | 1Universidade Estadual de Campinas, Instituto de Geociencias, Campinas, Sao Paulo. Brasil |
| Año: | 2006 |
| Periodo: | Oct-Dic |
| Volumen: | 24 |
| Número: | 4 |
| Paginación: | 495-512 |
| País: | Brasil |
| Idioma: | Portugués |
| Tipo de documento: | Artículo |
| Enfoque: | Analítico, descriptivo |
| Resumen en inglés | The reservoir characterization process can be defined as the three-dimensional and quantitative determination of structure and petrophysical properties of the oil field. The use of 3D seismic data in the reservoir characterization process has become more frequent mainly in the identification of the shape and the size of the sand bodies that constitute the reservoir. However, in some situations as the deep water turbidite reservoirs of Campos Basin, that are characterized by a complex distribution of sand bodies and subseismic thickness, the use of the conventional seismic amplitude data can result in serious mistakes in the definition of reservoir model. To solve the problem of the vertical seismic resolution limitation, is necessary to build an integrated model that use all information available about the reservoir. The most effective way to integrate the seismic data in the reservoir characterization process is by using acoustic impedance models, obtained by seismic inversion. The aim of this work is to show how the seismic inversion to acoustic impedance can support and improve the characterization of the reservoirs, when comparing the results obtained by the application of two seismic inversion methods, the recursive inversion and the constrained sparse-spike inversion. The seismic inversion methods are applied in a wedge synthetic reference model, that represent some features find in the deep water turbidite reservoir, like stratigraphic thinning and pinch-outs. Based on these results we can see the advantages in use the seismic inversion methods in the determination of geometry of sand bodies and in the calculation of petrophysical properties, and as a consequence more accuracy models can be generated and the forecasts about the behavior of the field can be done in most effective way |
| Resumen en portugués | O processo de caracterizacao de reservatorios consiste na determinacao tridimensional e quantitativa da estrutura e das propriedades petrofısicas de um campo de petroleo. A utilizacao do dado sısmico 3D neste processo tem se tornado cada vez mais comum principalmente na identificacao da forma e do tamanho dos corpos de areia que constituem o reservatorio. Porem em alguns casos como nos reservatorios turbidıticos de aguas profundas da Bacia de Campos, que s˜ao caracterizados por uma complexa distribuicao dos corpos de areia e por camadas com espessura subsısmica, a utilizacao do dado sısmico convencional em amplitude pode acarretar serios erros na definicao de um modelo para o reservatorio |
| Disciplinas: | Geociencias |
| Palabras clave: | Geofísica, Reservorios, Inversión sísmica, Modelado, Petrofísica |
| Keyword: | Earth sciences, Geophysics, Reservoirs, Seismic inversion, Modelling, Petrophysics |
| Texto completo: | Texto completo (Ver PDF) |
