Full text loading...
-
Elastic Impedance Minus Shear Impedance - A Powerful Pre-stack Inversion Attribute from OBC Data, Campos Basin, Brazil
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 76th EAGE Conference and Exhibition 2014, Jun 2014, Volume 2014, p.1 - 5
Abstract
Pre-stack seismic inversion is a useful technique to predict the petrophysical properties of the reservoir. Using a four component (4-C) ocean bottom-cable (OBC) seismic survey we set out to improve the reservoir characterization in a deep-water turbidite field in the Campos Basin.
Elastic Impedance (EI) gives us the opportunity to calibrate and invert nonzero-offset seismic data, whilst acoustic impedance is useful for zero-offset data. On the other hand, shear impedance (SI) was derived from converted PS data in a pre-stack inversion process. EI in combination with SI inverted data produce a better characterization tool for fluid saturated reservoirs.
In this paper we combine EI and SI results from pre-stack inversion to better characterize the deep water turbidite reservoir.