3draymodelsmodulefault_1.2

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OMNI 3D LAYOUT ®

- ELEVATIONS MODULE EXERCISE 1.1

3D Ray Models Module – Create from Grid DataThis exercise requires OMNI 3D Workshop and a 3D Model with at least two horizons.

Open an existing project or create a new project with the projection sste! corresponding to the 3D

Model area.

Fault Plane" 3D #a Model in OMNI 3D can ha$e se$eral nor!al %aults. &ach %ault is a %lat plane that stretches

%or! one edge o% the horizon to the other.

#ight'click on Faults in the (roject Tree) select Create New Fault. &xpand the *aults %older + clicking

the plus sign ,- next to it to show the new %ault na!e. #ight'click on Fault) and select Fault Style.&nter $alues %or the De%inition or use the &dit /iew to auto!aticall de%ine the %ault location.

Definition

"zi!uth 01Inclination 2

&le$ation '41

&asting ,5 61311

Northing ,7 8912:11

Fault Display Origin o% the ;ur$e ;ste!

/ertical Throw 211

How to Define the Fault Location in the Edit View

With the !ouse) drag the *ault De%inition dialog to the top le%t corner o% the OMNI 3D window.Open the Edit /iew.

#ight'click on the !odel in the &dit /iew at the approxi!ate center o% the %ault plane. ;elect

Copy Coordinates. #ight'click in the &asting ,5 text +ox in the dialog. ;elect Paste

Coordinate. #ight'click in the Northing ,7 text +ox in the dialog. ;elect Paste Coordinate.

&nter the *ault Azimut ,<01=) !n"lination ,<2=) and center coordinates Ele#ation ,<'41= in the dialog.

Open the Fault Display ta+. >hange the #e%erence Origin to the $ri%in of te Sur#ey System. >hange

the &erti"al 'row to 211.

(ress $(

Make +oth ?orizons a%%ected + the %ault. Make the %ault partiall transparent ' tr approxi!atel 32@.

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How to Change the Horizons as a Group:Ae%t'click the top horizon. ?old the ;hi%t ke) right'click on a horizon) select Set to )e *Affe"ted

)y Fault+.

How to Make the Fault Transparent:

#ight'click on Fault) select 'ransparent. Ae%t'click the scroll +ar and drag to a percentage o%

$isi+ilit. 1@ is co!pletel in$isi+le.

(ress $( .

Volume View

3D #a Models can also +e diplaed in the 3D /olu!e /iew. Open the &olume /iew. ;ince +othhorizons ha$e the de%ault $elocit) the are the sa!e /p INT ;cale color. >hange the Do!e ('$elocit

to <11=.

,ow to Can%e ,orizon Style

#ight'click on the na!e o% the horizon in the (roject Tree) select B?orizon Na!eC ;tle. >hange

the required $alues) and press $( .

In the /olu!e /iew there are %our !ain panes %or $iewing the horizons. The top two panes show cross'sections through the 3D Model $olu!e. The +ottto! le%t pane shows a !ap $iew o% the 3D Model) and

the +otto! right pane shows a s!all $ersion o% the 3D /iew. Mouse controls %or this pane are the sa!e

as %or the 3D /iew. Ae%t'click in the cross'section panes or the !ap pane to change the current cross'sections or !ap shown.

Ray Tracing

There are se$eral interacti$e was o% ratracing through the 3D #a Model. "ll are accessed through the

sa!e !enu. #ight'click on the !odel na!e) select Rays. ;elect an option %or ra tracing and %ollow the

directions in the wizard that opens. *lip +etween the &dit /iew and 3D /iew to create the ra traces andto $iew the!.

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*ault and ra tracing o% a sur%ace line

Analyses

There are also se$eral analses that can +e calculated on a 3D #a Model. These are are all quick

calculations that gi$e a %irst look at the !odel. #ight'click on Analyses in the (roject Tree) select

Create New Analysis. ;elect the analsis to +e done. *ill in the para!eters requested in the dialogs.

;ur$e analses can also +e calclulated %ro! a sur$e using the 3D #a Model. The two analses are

!llumination – Ray-tra"ed fold o#er a "omple. model and Synteti" – SEG/ o#er a "omple. model

>reate a sur$e o$er the sa!e area as the 3D #a Model) and calculate a script. #ight'click on the na!e

o% the script and select Create New Analysis. ;elect the Workshop "nalsis to +e calculated and enter

para!eters in the dialogs.

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3draymodelsmodulefault_1.2

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