Time slice of Mid-Continent USA data near the reservoir interval. Yellow highlights an interpreted graben feature. Data courtesy of ION GeoVentures.
The Seismic Imaging Group (SIG) at NEOS has launched a new seismic data processing offering. This technique for structurally oriented frequency enhancement (SOFE) significantly improves the recovery of high and low frequency acoustic signal. The result is an improvement in the vertical resolution of seismic images and an increase in the quality and utility of the seismic data that geoscientists use for attribute extraction, inversions, and rock and fluid property determination.
According to Dr. Edward Jenner, Research Director at SIG,
SOFE works by applying a frequency-dependent filtering technique that uses the mid-range spectrum, in which we have the highest signal-to-noise, to guide the filtering and attenuation of noise in the low- and high-range frequency spectra, in which we have the lowest signal-to-noise. The technique typically results in a significant increase in useable bandwidth of 30-50 Hz at the high-end of the spectrum, thus significantly increasing the resolution of the resulting seismic images.”
While SOFE will be of great value in almost every geologic setting, the greatest uplift will likely be realized by interpreters working in thin, stacked-pay reservoirs (such as those found in the Permian Basin) or those trying to image and determine rock properties in stratigraphic plays.
For those who will be at SEG in New Orleans next week, Dr. Jenner will be hosting an invitation-only Lunch & Learn on Tuesday October 20th. If you’re interested in attending, please send an email to email@example.com or register by clicking here.
Data before and after SOFE. a) input seismic section; b) seismic section after SOFE; c) input seismic section after spectral balance – note significant high-frequency artifacts; d) SOFE section after the same spectral balance as in (c) – note high-frequency artifacts are eliminated and the result is a broad-band, high-resolution, interpretable section that ties the well data.
Data courtesy of ION GeoVentures.
To learn more about NEOS’ Seismic Imaging Group, click here.