Question about importing faults

[Carlos Amorim]

Dear all,
I'm trying to import faults into Opendetc, but I'm having difficulty. Thank you in advance for your help.
1. What's the difference between Survey>Import>Fault; Survey>Import>Faultsticksets; and Survey>Import>FaultSet?

2. Does bulk importing require the data to be in a single file?

3. After importing fault data, can I zoom in to see which inline or crossline the fault is located?

Thank you again.

[Paul de Groot]

I ask my dGB colleagues to correct me if this is wrong and to comment on the last paragraph.

Hi Carlos,

1. What's the difference between Survey>Import>Fault; Survey>Import>Faultsticksets; and Survey>Import>FaultSet?

Survey-> Import->Fault imports a single fault plane. The user doc says: Faults are non-editable objects that may be used as display element in the 3D scene, displayed in full or a section. Attributes can also be applied along faults. If you are looking for an editable object that can be converted at a later stage into a fault plane, please load your data as fault stick sets. 

Survey -> Import -> Faultsticksets imports groups of sticks. Fault stick sets are the editable version of the fault planes. After import, you still need to convert these groups of sticks to fault planes so you can visualize them as planes. This is done with the help of the fault sticks toolbar.

Survey -> Import -> Faultset imports multiple fault planes.

2. Does bulk importing require the data to be in a single file?

Yes.

3. After importing fault data, can I zoom in to see which inline or crossline the fault is located?

Yes. A fault plane consists of a group of fault sticks. A surface is rendered on-the-fly through these sticks. You can display the sticks and the nodes of these sticks (Properties menu). OpendTect sticks are either vertical (inline, crossline), or horizontal (time-slices).

Because a fault plane consists of sticks and sticks consists of nodes, and these are the objects that you import when you import a plane, I do not understand why the user doc states that imported fault planes cannot be edited. A fault plane created in OpendTect from fault sticks can be edited, so why should an imported fault plane not be editable. That does not make sense. I hope the user doc is wrong. dGB: Please comment.

Best regards,

Paul.

--

Paul de Groot

Special Adviser

-----------------------------------------------------------------------------------------------------------------------   dGB Earth Sciences
Phone: +31 53 4315155 E-mail: paul.d...@dgbes.com Internet: dgbes.com

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[Carlos Amorim]

Thanks, Paul. I think I wasn't clear in my question number 3. When I import a Fault or Faultstick, I can't see it in the seismic view. It's shown in the Tree Scene, but I can't find it in the seismic view. Can you help me?

[Paul de Groot]

Maybe the fault-import went wrong. Is it possible to send the file you imported to sup...@dgbes.com? Please also send the ".survey" file, which you can find in the project folder.

Best regards,

Paul.

--

Paul de Groot

Special Adviser

-----------------------------------------------------------------------------------------------------------------------   dGB Earth Sciences
Phone: +31 53 4315155 E-mail: paul.d...@dgbes.com Internet: dgbes.com

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[Mark Crawford]

Dear Carlos,

I've just replied to you privately from the support email as it contains screenshots of your data.

But to keep this thread as complete as possible, the main issue appears to be that the coordinates of the fault file and the faultstickset files were way outside of the survey ranges.

I suggested that you return to the provider of the fault files to check for correctness.

At our end, I have entered a suggestion for improvement for the developers to decide on... that perhaps we should offer a warning message in such cases, to the effect of:

'The coordinates of the input file are outside of the survey ranges - please check them. Do you wish to proceed with the current import?'

 - with an 'OK' or 'Cancel'.

Please let us know if you make headway with the files and if you have any other questions.

Kind regards,

Mark

Mark Crawford

Support Manager

-----------------------------------------------------------------------------------------------------------------------   dGB Earth Sciences
Phone: +31 53 4315155 E-mail: mark.c...@dgbes.com Internet: dgbes.com

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