[OpendTect_Users] Scaling depth

[Friso Brouwer]

Mike,

Can you do Math on the headers this way?
> (i.e. feet > meters the offset header)
>

Indeed you can do that. Cheers, Friso

>
>
> Mike Stone
> 832-768-0884
> MStone at ACT3Solutions.com
>
>
>
> On Tue, Apr 10, 2012 at 10:30 AM, Friso Brouwer <friso.brouwer at dgbes.com>wrote:
>
>> I agree with Mike, easiest is to reimport the data , choose "No the file
>> is not segy rev1" when prompted during the import, this will give you most
>> options to overrule any segy headers that need to be overruled.
>>
>> Regarding Salva's suggestion I also wanted to mention that the current
>> development release (430d) has included a tool to manipulate segy headers
>> values (accessed via the segy import and export). Probably you will not
>> need that tool to import this 2D data correctly, but it is a will help you
>> to prepare incorrect segy files for other applications or add header values
>> that are not set in the regular OpendTect segy exports - e.g. adding an
>> offset or azimuth header to an seismic attribute volume generated from a
>> specific partial stack.
>>
>> Cheers,
>>
>> Friso
>>
>>
>> On Sun, Apr 8, 2012 at 8:17 AM, Salva. <salvanet at wanadoo.es> wrote:
>>
>>> You could use seisee free application to update binary header of segy
>>> files.
>>>
>>> http://www.dmng.ru/seisview/
>>>
>>> Salva
>>>
>>> El 5 de abril de 2012 17:57, Mike Stone <mstone at act3solutions.com>escribió:
>>>
>>> Jim,
>>>>
>>>> Can't you just override the sample rate on load?
>>>>
>>>> Take a look at the overrules tab and see if that will work.
>>>>
>>>>
>>>> If you actually need to stretch and interpolate it, I think you can do
>>>> it but it might be tricky.
>>>>
>>>>
>>>> Mike Stone
>>>> 832-768-0884
>>>> MStone at ACT3Solutions.com
>>>>
>>>>
>>>>
>>>> On Thu, Apr 5, 2012 at 10:23 AM, Jim Flocks <jflocks at usgs.gov> wrote:
>>>>
>>>>> I have some old 2D analog profiles that were scanned and converted to
>>>>> segy
>>>>> format.  I successfully imported them into OD, but unfortunately
>>>>> during the
>>>>> scanning process a wrong sweep was applied, 0.25 seconds instead of 0.5
>>>>> seconds
>>>>>
>>>>> Can I use the Mathematics Attribute in OD to rescale the vertical (e.g.
>>>>> Z*2)?
>>>>>
>>>>> Thanks,
>>>>>
>>>>> Jim
>>>>>
>>>>>
>>>>>
>>>>>
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>>>>
>>>>
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>>
>>
>>
>> --
>> Friso Brouwer
>> COO-Americas
>> dGB Earth Sciences
>>
>> +1 281 240 3939 (o)
>> +1 281 240 3944 (f)
>> friso.brouwer at dgbes.com
>>
>>
>>
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