Chapter 09 - Input Data Editing

3D Geological Modeling

Chapter 09 – Input Data Editing

Input Data Editing There are few editing steps that must be completed before a 3D geological model is created. The steps include: 1. Creati Creating ng 3D Surfac Surfaces: es: a. From Interpretations (3D Seismic ines!. b. From Fault "ol#gons (if the data a$ailable!. c. From Fault Stic%s Stic% s (if the data a$ailable!. d. From #our own Fault "ol#gons. &. 'diting 'diting the Created Surfaces Surfaces  )emo$ing )emo$ing Surface Surface "ea%s. 3. "ro*ecti "ro*ecting ng Fault Fault "ol#gons "ol#gons on their Surfaces. a. From Fault Fault "ol#go "ol#gons ns (from data a$ailable!. b. From #our own Fault Fault "ol#gons. "ol#gons.

How to Create 3D Surfaces from Interpretations 1. The +rst process process in editing editing the input data is creating creating 3D surfaces out of the 3D seismic lines. This process is summari,ed b# the following steps: '-pand the Utilities item in the Process Pane  and then double clic% on the Make/Edit Surface. The Make/Edit Make/Edit Surface dialog boappears.

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&.In the Input Pane window select the 3D seismic lines whose surface is to be created/ in this case select Top Tarert. Then go to the !eometr" tab and select the #utomatic.

$ig% &%'( The 0a%eedit surface form

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3. "ress ess #ppl". 2 surface will be created in )esult surface as shown in Fig. .&.

$ig%&%*( The 0a%eedit surface after adding the Top Taret for both 0ain input

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)epe epeat the same proces ocess s for for the Sea Sea +ed +ase Cretaceous, Top -ess -ess and Top Eti.e. 4ut before #ou create the other surfaces #ou ha$e to remo remo.e .e te te pre.ious surface b# right clic%ing and choose )emo.e icon from drop site and clic% -o%

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$ig% &%3( The 0a%eedit surface after remo$ing the pre$ious surface.

5. Clic% the Insert menu command and choose -ew $older% )ename the folder to !ullfaks Input% 2nd right clic% on this folder then choose Insert folder% )ename it to Surfaces 0time1. Mo.e all te surfaces into the Surfaces 0Time1%

$i g%&%2( 3D Surfaces displa#ed in 3D window

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Te settings of te 3D Surfaces ma" e canged "( '% For e-ample )ightclic% on Top Tarert Surface then selects Settings and idden Contour ines%

$ig%&%4( The Settings for Top Tarert Surafce

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$ig%&%5( The Top Tarert Surafce without contour lines &. 6o to the Insert pull down menu and select -ew #nnotations% 3. 0o$e the #nnotations into the Surfaces 0Time1 folder% 7. )ightclic%ing on the #nnotations and selecting Settings6 5. 8n the Settings tab clic% on #ppend item in te tale icon. 9. The )ow form appears as shown in Fig.. . Select the Sea +ed surface and clic% on the input icon. ;. 8n the Te-t tab change the name.

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$ig%&%7( Settings for 8#nnotations9

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. )epeat the same process if #ou want to add more #ppend item%

$ig%&%:( Settings for <2nnotations= after adding all the surfaces.

-otice( 8nl# one annotation ob*ect is allowed per pro*ect.

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$ig%&%&( Surfaces with their 2nnotations dipale#ed in 3D window

1>. )ight clic% on the Top Tarert surface then choose Insert new attriute and clic% ;k%

$ig%&%'<( Insert new attribute for Top Tarbert

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11. )ight clic% on the Continues from Info tab rename it to ST:4''r&*. 2nd change the template to Seismic 0default1%

$ig%&%''( Settings for
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How to Create 3D Surfaces from $ault Pol"gons (Data 2$ailable! 1. '-pand the Utilities item in the Process Pane and then double clic% on the Make/Edit Surface. The Make/Edit Surface dialog boappears. &. In the Input Pane window select the Fault "ol#gons whose surface is to be created/ in this case select Truncating fault . Then go to the !eometr" tab and select the #utomatic.

$ig%&%'*( The 0a%eedit surface form

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3. "ress #ppl". 2 fault stic%s surface will be created in )esult surface as shown in Fig. .13.

$ig%7%'3( The 0a%eedit surface after adding the Truncating fault pol"gon for both 0ain input

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)epeat the same process for remain $ault Pol"gons . 4ut before #ou create the other Fault "ol#gon Surfaces #ou ha$e to remo.e te pre.ious $ault Pol"gon Surface b# right clic%ing and choose )emo.e icon from drop site and clic% -o%

$ig%&%'2( The 0a%eedit surface after remo$ing the pre$ious fault pol#gon surface.

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5. )ight clic% on the !ullfaks Input folder then choose Insert folder% )ename it to $ault Pol"gons Surfaces% 2nd mo.e all $ault Pol"gons Surfaces to this folder.

$ig%&% '4( 3D Fault "ol#gons Surfaces displa#ed in 3D window

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How to Create 3D Surfaces from $ault Sticks (Data 2$ailable! 1. '-pand the Utilities item in the Process Pane and then double clic% on the Make/Edit Surface. The Make/Edit Surface dialog boappears. &. In the Input Pane window select the Fault Stic%s whose surface is to be created/ in this case select Truncating fault. Then go to the !eometr" tab and select the #utomatic.

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$ig% &%'5( The 0a%eedit surface form

3. "ress #ppl". 2 fault stic%s surface will be created in )esult surface as shown in Fig. .1.

$ig%&%'7( The 0a%eedit surface after adding the Truncating fault sticks for both 0ain input

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4.


)epeat the same process for remain $ault Sticks . 4ut before #ou create the other Fault Stic%s Surfaces #ou ha$e to remo.e te pre.ious $ault Sticks Surface b# right clic%ing and choose )emo.e icon from drop site and clic% -o%

$ig% &%':( The 0a%eedit surface after remo$ing the pre$ious fault sticks surface%

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9. )ight clic% on the $aults 0Time1 folder then choose Insert folder% )ename it to $ault Surfaces% 2nd mo.e all $ault Sticks Surfaces to this folder.

$ig% &%'&( 3D Fault Stic%s Surfaces displa#ed in 3D window

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How to create 3D Surface from "our own $ault Pol"gon To create fault pol#gons on a certain surface follow the steps: 1. 8pen a new *D window and displa# the surface whose fault pol#gons are to be created. In this case displa# the Top Tarert surface.

$ig%&%*<( Top Tarbert surface displ#ed in &D window

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&. 2cti$ate the Make/Edit Pol"gons under Utilities in the Processes "ane. 3. The Pol"gons #ctions toolbar displa#s. Clic% on the Start -ew Set of Pol"gons to start tracing a new set of fault pol#gons for the TopTarert surface. '$er# time #ou start a new fault #ou must clic% the Start -ew Set of Pol"gon icon as shown in Fig. .&1.

$ig%&%*'( Creating fault pol#gons of the Top Tarert surface with Tool bar

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7. For completeness create a new folder rename it Top Tarert Pol"gon and place all fault pol#gons under this folder.

$ig%&%**( Top Tarbert fault surface

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5. )epeat the same process for Top -ess and Top Eti.e surfaces. 2nd ma%e sure that #ou will create two folders and rename them Top -ess Pol"gons and Top Eti.e Pol"gons. 2nd place all fault pol#gons under each folder. 2s shown in Fig..&3. and Fig..&7.

$ig%&%*3( Top ?ess fault surface

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$ig%&%*2( Top 'ti$e fault surface

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Editing Created Surfaces = )emo.ing Surface Peak "ea%s or spi%es depend on the data if it is shown or not.

-otice( The data that we are wor%ing on it it not showing the Surface "ea%. For that we brought another data to show #ou how we can remo$e the Surface "ea%.

"ea% on the 3D surfaces can be remo$ed with a simple clic% as follows/ 1. Displa# the surface that contains the pea% to be remo$ed. 2cti$ate the Make/Edit Surface under Utilities in the Process Pane window. The Surface #ctions toolbar displa#s as shown in Fig. .&5. &. Choose the Peak )emo.er button on the Edit Surface Tools toolbar

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$ig%&%*4( 3D surfaces displa#ed with pea% and tool bar

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3. Clic% on the pea% to be remo$ed. The pea% disappears as shown in Fig. .&9.

$ig%&%*5( The 3D Surfaces after remo$ing the pea%

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Pro>ecting $ault Pol"gons on teir Surfaces Fault pol#gons are often interpreted in the @A plane onl#/ hence their B$alues will be set to > as shown in Fig. .1. It is an eas# process howe$er to get all fault pol#gons down to their respecti$e surfaces. This will gi$e them their B $alues at the correct position. This process is summari,ed b# the following steps:

'%$rom $ault Pol"gons (from data a$ailable! Dr.assan we didnt %now how we pro*ect the fault pol#gons on their surfaces. If #ou loc% at the demodata. For e-ample (4oundar# Fault Eest!: The single fault pro*ected on all 3D surfaces.

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*%$rom "our own $ault Pol"gons% 1. Displa# Top Tarert surface with Top Tarert Pol"gons%

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$ig %&%*7( Fault pol#gons with > B$alues

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&. 8pen the settings for the +rst fault pol#gon in Top Tarert pol"gons folder we will ta%e (Pol"gon 7*! as an e-ample. and go to the Calculations tab as shown in Fig. .&;.

$ig% &%*:( Settings for Tarbert fault pol#gons dialog bo-

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3. Select the Top Tarert surface in the Input Pane then clic% on the blue arrow beside the 2 in the Settings dialog bo-.

$ig%&%*&( Settings for Top Tarbert fault pol#gons (inserting surface ! 7. "ress the 2ssign: ?@# button then press #ppl" and ;A buttons.

$ig%&%3<( Settings for Top Tarbert fault pol#gons ( ?@#!

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5. Complete all the remain fault pol#gons for Top Tarert surface. 2nd all the fault pol#gons mo$es down to the surface as shown in Fig. .31.

$i g% &%3'( Top Tarbert fault pol#gons pro*ected on their surface

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9. )epeat the same process for the Top -ess and Top Eti.e 4ut remember #ou ha$e to delete the pre$ious surface and insert the new surface b# clic% on Delete button.

$ig% &%3*( Top ?ess fault pol#gons pro*ected on their surface

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Chapter 09 - Input Data Editing

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