Archive for August 24, 2009

Fugro-Jason Updates Jason Geoscience Workbench

Fugro-Jason has announced the commercial release of JGW 8.1, the latest version of its flagship product Jason Geoscience Workbench. This version includes new AVO Attribute/Analysis and Full Waveform Synthetics applications. JGW integrates geological, geophysical, petrophysical and rock physics information into a single, consistent model of the earth. The new JGW 8.1 release also has a variety of enhancements to existing applications, including a new Spectral Decomposition module, improvements to the deterministic inversion and wavelet estimation algorithms, and numerous usability enhancements.

            “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,” said Joe Jacquot, Marketing Manager for Fugro-Jason. “This is the third release in a row to be released on schedule and driven by user requests, demonstrating our deep commitment to customers.”

AVO Attribute/Analysis

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); and

•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 users to analyze which seismic events are primaries and which ones are not, whereas in convolutional modeling all responses are presumed to be primaries.


August 24, 2009 at 9:21 pm Leave a comment

SeaSCAN Acquires Shallow Draft Seismic Vessel from Fairfield

SeaSCAN, Inc., a shallow water seismic source provider, announced it has completed the purchase of the M/V SeaSCAN Speculator, a purpose-built vessel designed to operate marine seismic source air gun arrays in water depth as shallow as 1.5 m. The vessel is constructed of aluminum, with dual jet propulsion including two integrated 300 scf/m Price A300 air compressors. Using a custom launch and recovery “A” frame capable of lifting 7,000 lbs, the vessel can support a variety of SeaSCAN source arrays from 220 cu in., specially designed ultra-shallow water seismic source arrays, up to 2,400 cu in. Due to its portable and lightweight construction, it can be mobilized quickly and easily shipped as deck cargo anywhere in the world.

            “We are pleased that with the acquisition of the Speculator, we are responding to the requests we have had from our customers to provide a turnkey, all-inclusive shooting package to acquire seismic data in ultra-shallow water (USW),” stated Harold Barber, president and founder of SeaSCAN Inc.

            “SeaSCAN has earned a reputation for operational excellence by providing equipment redundancy, very experienced crews and an extensive spares and consumables list for every job. With the vessel’s dual, integrated air compressors, the company continues its focus on high quality performance,” said SeaSCAN Operations Manager, Patrick Higginbotham. “Now we can provide customers with a suite of capabilities, from full turnkey Tri-Cluster® or USW source packages to equipment and personnel only, using a client-provided vessel.”

            After modifying the M/V SeaSCAN Speculator to better accommodate the SeaSCAN arrays, the vessel has already been mobilized for its first contract. Using 4,220 array sleds for a total of 880 cu in., the vessel will be shooting offshore Trinidad in less than 2.0 m of water.

            Additional information on the vessel, including photographs can be found at:

August 24, 2009 at 9:18 pm 1 comment

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