1. Settings -> Tracking tab of an interpretation and set ’Stop at visible faults’ as Lateral constraints
2. Interpreted faults are used to stop the autotracking
Attachments
Overview
• Converting pre-Petrel2007.1 seismic projects • Merge navigation and SEG-Y data • Seismic server • Use faults as constraint when autotracking • Modify autotrack parameters • Edit fault segments • Horizon operation example • Surface operation example • Artificial light • Generate surface from attribute maps • Generate variograms from attribute maps • Complete structural model • Create velocity model using a seismic velocity cube • Create velocity model using stacking velocities
Where events are dipping, interpretation may leak over the top or under the base of faults.
Modify autotrack parameters
1. The ”best practice” is to use a polygon to limit the autotracking to an area of interest.Open a 2D Window and display seismic and interpretation data in that window
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selected points in display window / Satisfying filter-filter
2. Activate the Make/Edit Polygons process found under Utilities 3. Use Add New Points and digitize a closed polygon around the area of interest. Close
the polygon with Close Selected Polygon(s)
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Modify autotrack parameters - basics
1. Seed value confidence (minimum value tracked as % of seed point) 2. Max vertical delta (maximum vertical position change from one trace to
Converting pre-Petrel 2007.1 seismic projects
1. In Petrel 2007.1, select Open project from the File Menu
2. Select the preP2007.1 project and open it
3. Observe any warning and information boxes, as well as the Petrel message log that pops up
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Connect to a seismic server
1. From the View menu, select Panes and Seismic Server explorer
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2. In the Seismic Server explorer window, click on Connect and give in the needed parameters
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3. Available seismic volumes and interpretations can be copied and pasted locally as links to seismic server data
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Using faults as constraint when autotracking
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The fault compartment must be completely surrounded by faults (closed compartment).
Any gap between faults may result in interpretation leaking through the hole.
next) 3. Toggle on Wavelet tracking and specify parameters 4. Expansion quality (distance out checked against seed point)
Hover cursor over questionmark for information on parameters
5. Boundary polygon (closed polygon that autotracking is not
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permitted to expand beyond) 6. Seismic volume (3D volume to use if more than one cube)
7. Seeds (Visible -all points in display window / Selected -only