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Seismic Workshop
At WellsGeo we have experience in helping E&P professionals make decisions in upstream E&P for over 25 years and have utilized that experience to create a truly amazing software system that is developed for ease of use and cutting edge Geoscience technology that is one of the best solutions in the industry.
In this competitive world of volatile energy prices, having the best information to make upstream exploration decisions can make the difference between success and failure for everything from acquiring funding for drilling and prospect generation for drilling the best wells you can. SeismicWorkshop is a Windows based platform featuring state of the art geophysical technology for visualization, bandwidth extension, signal enhancement and seismic attribute generation. SeismicWorkshop supports both 2D and 3D seismic data in an easy to use project driven system that allows integration of well log information to be evaluated in the parameter selection process for the various workflows that produce geoscience products. All output volumes are generated in the background and are output in SEG-Y format for input into to your existing interpretation software.
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Bandwidth Extension
The bandwidth extension workflow provides the user with dual displays that shows the input data and bandwidth extended data on the right side. Slider controls allow the user to adjust the output wavelet frequency range and see real time feedback of the bandwidth extended seismic section. Various algorithm parameters can be modified easily and the attribute recomputed and once the user is satisfied with the results the entire volume can be output in SEG-Y format as a background process.
Attribute Workflow
The Attribute workflow provides the user with a single display that allows the user to visualize the selected attribute as the background color image. Controls exist to gain the input seismic and background attribute separately as well as easily change colors of the color bar. Right clicking the mouse on the section computes and displays the spectrum of the selected window size to show the user the short window amplitude and phase spectrum that will be utilized by the various attributes within the workflow. Various algorithm parameters can be modified easily and the attribute recomputed and once the user is satisfied with the results the entire volume can be output in SEG-Y format as a background process.
Hilbert Workflow
The Hilbert Attribute Workflow is very similar to the Attribute workflow providing the user with a single display that allows the user to visualize the selected attribute as the background color image. Controls exist to gain the input seismic and background attribute separately as well as easily change colors of the color bar. The Hilbert attribute workflow does not use a dip steered kernel like the primary attribute workflow and all the Instantaneous attributes are computed on a trace by trace bases. The Hilbert Attribute workflow currently has 10 attributes such as Instantaneous Phase, Frequency, Amplitude and Sweetness. Once the user has selected the desired attribute the entire volume can be output in SEG-Y format as a background process. This workflow is offered free of charge to the SeismicWorkshop workflow compliment.
Well Properties
The well properties workflow allows the user to select the desired well log curves that will be displayed in the Attribute and Bandwidth extension workflows. Various controls allow the user to select the desired curves as well as plot type and curve color. Separate tabs in the well properties form allow the user to easily add new log files as well as construct synthetic seismic traces that can be overlaid in the workflows. The background seismic in the overlay window interactively changes when the user makes changes to or selects another dataset from the primary application that the Advanced Well Properties Form was called from. This is a standard feature in SeismicWorkshop
Product features
Bandwidth Extension Workflow
Outputs enhanced bandwidth from conventional seismic with integrated spectral decomposition and enhancement of weak spectral information.
Interactive feedback of bandwidth, phase and wavelet control.
Well log curve display on interactive display for Bandwidth Extension
Computation of Bandwidth Extension and SEG-Y Output as a background process
Attribute Workflow
Computes attributes along 3D dip steered trajectories
Presents attributes as the background Image of the currently selected Inline or Crossline
Visualization of spectral Amplitude and Phase Spectrum
Well log curve display on interactive display for Attribute parameterization
Computation of Attributes and SEG-Y Output as a background process
Hilbert Attribute Workflow
Presents attributes as the background Image of the currently selected Inline or Crossline
Well log curve display on interactive display for Attribute parameterization
Computation of Attributes and SEG-Y Output as a background process
SEG-Y Loader
Simplified UI for examining trace header and EBCDIC header values
Auto scan for building bin grids as well as a manual system
Output data in 1,2 and 4 byte options as well as compression
Options for loading time and Depth volumes
Inputs and Outputs IEEE and IBM Floating point
Main Interface
3D Viewer with well location display
Innovative color bar with interactive adjustment of colors
Simplified project management system
Slider and 3D controls for inline, crossline and z slice viewing
Allows unlimited filesystems for project data storage
Well log System
Simplified loading of LAS formatted well logs and text column data
Allows creation of custom curves
Synthetic generation with extracted, trapezoidal and Ricker wavelets
Simplified entry of check shot information
Automated computation of check shot from sonic option
Workflow output volumes available
Absorption3D
Absorption3D is a 3D dip steered attribute that involves computing the averaged frequency spectrums of a dip flattened window and fitting the slope that can indicate areas of high frequency attenuation associated with gas accumulations and or high porosity zones.
CohereCube
CohereCube uses a dip flattened window and measures the standard deviation of the semblance coefficient of the center sample and its nearest neighbors. Generally this should be run on an Enhanced volume which is an output option available in the workflow. This attribute highlights areas of incoherency such as faults and channels boundaries.
AbsorptionAuto
AbsorptionAuto is similar to absorption3D but varies the window size and fitting parameters relative to the dominate frequency and bandwidth.
Attenuation3D
Attenuation3D is similar to absorption3D but normalizes the local spectrums and converts them to DB down before the attenuation slope is computed. This has the effect of taking the depth variant reflection strength out of the absorption coefficient.
AbsorptionFreq
AbsorptionFreq uses dual sliding windows and fits the slope of the spectral difference of the two windows.
3DEnhance
3DEnhance fits a plane at each point within a 3D volume and outputs the enhanced data, used for signal enhancement and should be run before CohereCube is computed.
Filter
Bandpass trapezoidal filter.
Unconfomity Cube
UnconformityCube is a dip steered attribute that highlights areas of phase unconformity, usually shows channeling, point bars and oxbows as large amplitudes. Areas of high porosity and or pay zones are usually low amplitudes.
SpecRatio3D
SpecRatio3D uses a sliding dual window and accumulates the dip steered spectral energy from the bottom window and divides by the accumulated dip steered energy from the accumulated energy from the top window to yield the ratio of spectral energy difference.
DipVolume
Outputs a Volume with the amplitudes representing the 3D Dip component computed in the direction of maximum dip in seconds per unit distance in feet or meters.
MeanCurvature
Outputs a volume of mean or average curvature or flexure, representing the average curvature computed from the estimated structural dip from an N x N dip window for each sample.
PosCurvature
Outputs a volume of the maximum curvature or flexure, representing the most positive curvature found from an n x n dip window for each sample. Can indicate potential fractures based on the structural changes present in the data.
NegCurvature
Outputs a volume of the most negative curvature or flexure found, representing the most negative curvature found from an n x n dip window for each sample. Can indicate potential fractures based on the structural changes present in the data.
MeanAmpCurvature
Outputs a volume of mean or average Amplitude curvature or flexure, representing the average amplitude curvature computed from the amplitudes of the dip corrected amplitudes of an n x n dip window for each sample. This attribute can be used for facies classification for reservoir delineation.
PosAmpCurvature
Outputs a volume of the maximum Amplitude curvature or flexure, representing the most positive amplitude curvature computed from the amplitudes of the dip corrected amplitudes of an n x n dip window for each sample. This attribute can be used for facies classification for reservoir delineation.
NegAmpCurvature
Outputs a volume of the most Negative Amplitude curvature or flexure, representing the most negative amplitude curvature computed from the amplitudes of the dip corrected amplitudes of an n x n dip window for each sample. This attribute can be used for facies classification for reservoir delineation.
Bandwidth Extension Output Volume
Outputs a volume of smaller sampling interval that employs an inversion algorithm to extract reflectivity and allows the user to vary the amount of frequency in the output wavelet. This process allows finer detail in the vertical resolution of a seismic trace and can be used to map reflectors and faults much more accurately.
Hilbert Attribute Workflow Output Volumes available
Instantaneous Amplitude
Outputs a volume of a seismic traces envelope, which represents the relative reflection strength of the reflectors and can identify changes in acoustic impedance and lithology.
Instantaneous Phase
Outputs a volume of phase values derived from the Hilbert transform that highlights reflector continuity and can be useful for identifying reflector / fault boundaries.
Instantaneous Frequency
Outputs a volume of frequency values derived from the Hilbert transform which is relative to the Instantaneous Phase.
Instantaneous Bandwidth
Outputs a volume of the absolute value of the 1st order derivative of the instantaneous amplitude.
Sweetness
Outputs a volume of ratios representing the Instantaneous Amplitude / Instantaneous Frequency and can show gas and oil deposits and high porosity zones.
Smoothed Instantaneous Frequency
Outputs a volume of ratios representing the Instantaneous Amplitude / Instantaneous Frequency and can show gas and oil deposits and high porosity zones.
Instantaneous Amplitude 1st Order Derivative
Outputs a volume of the 1st order derivative of the Instantaneous Amplitude and can show the relative change of reflector energy and can be useful in detecting discontinuities.
Instantaneous Amplitude 2nd Order Derivative
Outputs a volume of the 2nd order derivative of the Instantaneous Amplitude and can be used to see additional reflectivity that is not present in the normal seismic section.
Cosine of Instantaneous Phase
Outputs a volume of the cosine of the instantaneous phase and has the same use as the Instantaneous Phase but preserves the peak and trough relationship of the input data.
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