1、AttachmentsOverviewConverting pre-Petrel2007.1 seismic projectsMerge navigation and SEG-Y dataSeismic serverUse faults as constraint when autotrackingModify autotrack parametersEdit fault segmentsHorizon operation exampleSurface operation exampleArtificial lightGenerate surface from attribute mapsGe

2、nerate variograms from attribute mapsComplete structural modelCreate velocity model using a seismic velocity cubeCreate velocity model using stacking velocitiesConverting pre-Petrel 2007.1 seismic projects In Petrel 2007.1, select Open project from the File Menu1Select the pre-P2007.1 project and op

3、en itObserve any warning and information boxes, as well as the Petrel message log that pops up23Merge navigation and SEG-Y data From the Tool menu, select Launch SEGY Utility1Select the UKOOA Navigation fileNot finished23Connect to a seismic serverFrom the View menu, select Panes and Seismic Server

4、explorer1In the Seismic Server explorer window, click on Connect and give in the needed parametersAvailable seismic volumes and interpretations can be copied and pasted locally as links to seismic server data 2323Using faults as constraint when autotrackingSettings - Tracking tab of an interpretatio

5、n and set Stop at visible faults as Lateral constraints Interpreted faults are used to stop the autotracking2The fault compartment must be completely surrounded by faults (closed compartment).Any gap between faults may result in interpretation leaking through the hole.Where events are dipping, inter

6、pretation may leak over the top or under the base of faults.1Modify autotrack parameters32The ”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 windowActivate the Make/Edit Polygons process found

7、under UtilitiesUse Add New Points and digitize a closed polygon around the area of interest. Close the polygon with Close Selected Polygon(s)1Seed value confidence (minimum value tracked as % of seed point)Max vertical delta (maximum vertical position change from one trace to next)Toggle on Wavelet

8、tracking and specify parametersExpansion quality (distance out checked against seed point)Modify autotrack parameters - basicsBoundary polygon (closed polygon that autotracking is not permitted to expand beyond)Seismic volume (3D volume to use if more than one cube)Seeds (Visible -all points in disp

9、lay window / Selected -only selected points in display window / Satisfying filter-filter criteria)Override/Locking (Overrides or locks already tracked points)Track Now! (initiates tracking)9Hover cursor over questionmark for information on parameters234157866Edit fault segment12435Open the Interpret

10、ation Window used previouslyMake a copy of the fault (click on the fault in Input tab, Ctrl+C Ctrl+V). Make the copy activeActivate the Select and Edit/Add Points tool . Click on a point and move itTo add points, activate the Interpret Faults tool . Left click to add interpretationThe same procedure

11、 can be followed in a 3D Window, but is somewhat more cumbersome as the points may be moved out of the seismic plane Edit Fault segment15324Continue using the open 3D Window, make sure the fault is active and shownSelect the Cut Segment tool. Click on the line between two points to be cutTo join two

12、 line segments, activate Set Select/Pick Mode . Hold Ctrl and click on the two line segments to be joined. Observe that all points on the segments turn yellowClick on the Join Points in Segment iconThe same procedure can be followed in an Interpretation window Surface operations thickness mapDisplay

13、 the two surfaces in a 3D WindowRight click on the surface on top of the interval, open Settings - Operations tabUnder Calculations, Make Thickness map. Use the deeper surface as Base Surface. Make both TST and TVT maps and note the differencesQC using the 3D window15234Display a surface in a 3D win

14、dow. Turn off Contours lines under Style tab on SettingsRight click the Light sources icon on Windows pane. Insert new light source.Open Settings for new light sourceExample light source is Spot lightDefault light source is Headlight1Artificial light - edit 23colourSource settings4To edit light sour

15、ce using the mouse: Right click light source and click on the view all on the tool bar Generate surface from attribute mapsRight click one attribute of an attribute mapUse Convert to separate SurfaceA new surface is found at the bottom of the Input tabDisplay it in a 3D window123Original attribute m

16、ap14New surfaceAttribute mapGenerate Variogram map from attribute mapsRight click on the generated attribute of an attribute mapUse Convert to PointsA new object is found at the bottom of the Input pane. Display it in a 3D windowGo to Settings - Variogram tab. Use Variogram map, choose Type and Exec

17、uteDisplay the resulting sample variogram in a Map window1243converted points5Generate Sample variogram from attribute mapsUse an Attribute map converted to points (as previous slide)Go to Settings and the Variogram tab. Use Sample variogram, choose TypeUnder the Orientation Tab select Isotropic (to

18、ggled on) or Anisotropic (toggled off). Enter in correct Orientation and XY range, and ExecuteDisplay the resulting sample variogram in a Function window1234Complete Structural model Fault interpretation continuationActivate the Fault Modeling process under Structural ModelingConvert any Interpreted

19、 Faults in the Input pane to Modeled FaultsSet extra height on the Modeled Faults if neededObserve the faults in the fault model. If there are faults missing, go back to fault interpretation1234Complete Structural model Fault interpretation continuationUse the Fault Modeling tools to edit and build

20、a consistent Fault model with smooth, connected and quality checked faultsYou can further use the Pillar Gridding to: Make Horizons/Zones and Layering processes to create a 3D grid based on all the seismic and geological data available 12Additional slides Import velocity data SEG-Y cube Velocity mod

21、eling converting velocity cubes Velocity model using a seismic velocity cube Import velocity data Stacking velocities Velocity model using a stacking velocities Velocity model using check shots and stacking velocitiesImport velocity data SEG-Y cubeFrom the Menu bar, go to Insert and New Seismic Surv

22、ey FolderUnder Setting, Info tab, rename the folder to Velocity. Right click and use Import (on Selection)Open the file with File of type: SEG-Y Seismic data.In the Import box change Template to VelocityDisplay an Inline and Crossline from the velocity cube1234Velocity modeling - converting velocity

23、 cubesFrom the Input pane, expand the velocity cube object and display an inline and crossline.Right click on the velocity volume and open Volume attributes.From Attribute library, select Depth conversion method from the drop down menu.Select Velocity cube (Depth type attribute).Toggle on Set output

24、 name and type in Average velocity.Use default parameters and click OK.423651Velocity modeling using a seismic velocity cubeRe-open the Make velocity model processToggle on Create new velocity modelChange correction to Well tops and drop in the corresponding tops from the Input paneChange Velocity m

25、odel input to Velocity cube for the 5 last entriesDrop in the Average velocity volume just created using the drop in arrows 32451Import velocity data Stacking velocitiesFrom the Menu bar, go to Insert and New Folder.Click on folder name (New folder), press F2, and change name - for example Stacking

26、Velocities. With right-mouse-button: Select Import (on Selection).Open correct file. Use File of type Petrel Points with Attributes (ASCII).Match the import parameters with input file. Keep Z-value to feet for now. Click OK.3142Import velocity data Stacking velocitiesRight click on stacking velocity

27、 dataset and open Settings for the objectGo to the Info tab and change Template to Elevation TimeExpand the stacking velocity object and the Attributes sub-folder. Open Settings for Attribute Vstack Change Template to Stacking VelocityDisplay the point dataset in a 3D window76598Velocity modeling us

28、ing stacking velocities, Dix conversionIn the Input tab, open the Vstack folder, the xytv-data (VL_D.txt) and the Attributes folderRight click on the point data, open Settings and go to Operations tab. Open Seismic Operations and use Dix conversionDrop in the data points with the drop in arrow . Cli

29、ck on ExecuteInterval velocity, average velocity and other attributes are generated12423Velocity modeling using stacking velocities, upscalingMake sure the correct 3D Grid under the Models tab is activeFrom the Process tab, open the Scale up well logs processUse Create new propertySelect Point attri

30、butes and drop in the point data using drop in arrow and select Average velocityAfter upscaling the point attributes,the Average velocity U property is generated for a 3D Grid54321Velocity modeling with stacking velocities, populate 3D GridFrom the Process tab, open the Petrophysical Modeling proces

31、sUse existing property and select Average velocity UUnlock the first zone using the lock icon Select Moving Average (Interpolation) as Method for ZoneUnder Output data range, change Min/Max to Relative (%). Apply to populate the first zone25431 Velocity modeling using stacking velocities, 3D GridWit

32、h the first zone unlocked and all parameters set, click Copy settings from the selected zone Click on Paste settings to all zones . Under Output data range, change Min/Max to Relative (%) and Apply View the result in a 3D window2314 Velocity modeling using stacking velocitiesFrom the Process tab, op

33、en the Make Velocity ModelUse Create new velocity model (do not overwrite the previous generated model)Change Velocity Model input to Property for all intervals Drop in the corresponding Average velocity property using the arrowsMake sure Correction is set to Well Tops, alternatively, drop in the co

34、rresponding tops from the Input tab25341 Velocity modeling using check shots and stacking velocitiesRight click on the check shot object, select Insert new attribute. Make a continous attribute with attached to the Average velocity. In the check shot spreadsheet, copy and past the calculated average

35、 velocity column into the created column Upscal the Average velocity points into a 3D grid24413 Velocity modeling using check shots and stacking velocitiesOpen Petrophysical modeling, use the Average velocity (check shots) and open Zone 1.Select Method (Kriging by Gslib) and set variogram parameters

36、.Do colocated Co-kriging with the Average velocity derived from Vstack as secondary variableUse the same setup for all zones to populate the checkshots derived average velocity95876Use the new Average velocity property as input into the velocity modeling processActivate a 3D Grid in the models pane. Click on an Inline and Crossline for the volume to useOpen the Petrophysical modeling process found under Property modeling in the Process paneUse correct Property template. Se