Offshore staff

AMSTERDAM -- Fugro-Jason has released JGW 8.1, the latest version of its product Jason Geoscience Workbench. This version includes new AVO Attribute/Analysis and Full Waveform Synthetics applications, and a series of enhancements to existing products. JGW integrates geological, geophysical, petrophysical, and rock physics information into a single consistent model of the earth, the company says.

The new AVO Attribute/Analysis module will allow extraction of seismic AVA or AVO attributes from pre- or partial stack seismic data. The options include:
• Shuey 2-term (intercept and gradient)
• Shuey 3-term (intercept, gradient and far-offset)
• Smith and Gidlow (Vp and Vs contrasts)
• Fatti et al. (Zp and Zs contrasts)
• Gray et al. (λ, μ and ρ contrasts)
• Full Waveform Synthetics.

This add-on application to the Well Log Editor provides full waveform synthetics. Pre- and post-stack NMO synthetics with and without multiples can now be calculated. Using well control, this module allows analysis of which seismic events are primaries and which ones are not. In convolutional modeling all responses are presumed to be primaries.

The new JGW 8.1 release also includes a variety of enhancements to existing applications. These include a new Spectral Decomposition module, improvements to the deterministic inversion and wavelet estimation algorithms, and numerous usability enhancements, the company says.

JGW 8.1 will be released to clients in the third quarter.

“This latest release, driven by user requests, expands JGW to encompass additional seismic interpretation and analysis tools,” says Joe Jacquot, marketing manager for Fugro-Jason. “With these new tools and enhancements, our customers will be able to do a better job of integrating traditional seismic AVO analysis and JGW seismic inversion.”

06/09/2009