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SAMPLE IMAGE

Loa ing partia stac s as an ang e

gather in CE8

Simon Voisey

June 2008

Hampson-Russell London

Written for CE8R1

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Loadin artial stacks as an le athers 1

Select your desired[1]

1

[1] Navigate to correct

location

2 Hi hli ht each

volume

[3] Press Add >> to

place the selectedvo ume nto t e se ecte

files window. Do this

until all volumes are in

this window

[2][3]

[2][3]

2

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Loadin artial stacks as an le athers 2

Choose the 3D option

Toggle on merged

volume

3

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Loadin artial stacks as an le athers 3

Set the parameters for your segy

[1] In this example I have inline,xline, x and y coordinates in theheaders. Therefore I toggle on yesfor both. Use the Header Dump

information.

[2] Assign the bin locations to inlineand xline

[3] Say yes to renumber the CDPs

[4] Input the same name for allvolume so they are merged into asingle file

[5] Change from post to pre-stack[2]

,

data in as an angle gather.

[6] Make Angle Gather as thevolume type.

[3]

4

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Loadin artial stacks as an le athers 4

[1] Insert your byte locations

[2] Use the Header Dump to

find each of the byte locations[3] The slider pans through thetrace headers, therefore you canmake sure the numbers are

[5]

[4] Do not ignore receiver X andY coordinates. We want toimport the files as pre-stack data

[5] If your 2D lines havevar in b te locations chan e

[1][4]

[6]

between them from theindicated pull-down menu. Orpress apply format to all files[6] if they are the same.

[3] Hampson-Russell software

requires the angle value to be

stored in b te location 37. B

5

using Seisloader a constant

value can be added to thislocation. Please use link ---->

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Loadin artial stacks as an le athers 5

Scanning the seismic is an important step. The

software defines the location of the traces. If the

operation is stopped, then no traces will appear.

The time of the operation is dependent on the

size of the data set. Please have patience on large

(>25GB) volumes. Even if the progress bar

becomes white, the software is still computing.

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Loadin artial stacks as an le athers 6

The final importation pageshows the geometry of the

segy file, after scanning.

Please check the numbersare correct. This is fullyinteractive and you can alter

the corner points [1]. Seenext slide.[1]

parameters are shown, press

OK [2] to bring the volumeinto your project

7[2]

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Loadin artial stacks as an le athers 7

Result of importation process. Note that the near, mid and far traces have been placed

into a single bin.

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Loadin artial stacks as an le athers 8

To improve the display, go

into Seismic view parametersmenu (View -> Parameters),

tab [1]. Finally, toggle on

Offset.

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