Importing Interpretation

Owned by Erlend Kvinnesland
Last updated: Sept 11, 2012 by Former user (Deleted)Version comment
2 min read

Introduction

Make sure you have read the chapter about Importing Data and ASCII import before continuing with this page.

Seismic Horizon/interpretation data is always related to a horizon name, line name and shot point. This means that each pick for a horizon contains more than just its position in 3D ( X Y Z coordinates) - each pick also contains a link to horizon name, which seismic line it was interpreted on, and shot point. Most interpretation systems support many ways of storing seismic interpretations on file.

Importing interpretation can be done two ways:

  • Import as Ihorizon (interpreted horizons)
  • Import as XYZ lines

If you want to edit or reinterpret the interpretation after import you should import the files as Ihorizons. If the interpretation input is to be used for gridding purposes only, i.e. there will be no editing of the interpretation, you can use the ASCII (column) import and import as XYZ lines.

Details

Import as Ihorizon

To import as Ihorizon you need a folder with the type Interpretation.

Geocap expects 1 file per horizon. Do not try to import interpretations where multiple horizons has been exported to 1 file.

Each line in the horizon file should contain the following columns: LINE NAME, SP, X, Y, TIME, and optionally segment id. All interpretation systems support multiple segments along a line. A segment ID column is necessary to give Geocap the means to read the segments correctly. The advantage by having a relationship between the interpretation points and the line name/sp is that it enables the user to use the Geocap interpretation tool to edit the interpretations through digitizing on the seismic lines.


Example of Ihorizon import

  1. Adjust the header so that header information is not included in the import.
  2. Make sure X, Y, Time and SP have the right column numbers.
  3. Set the Data separator to the line name column in order to split the file into separate lines.

Import as XYZ lines

Importing interpretation as XYZ lines can be done on Genric folders.

The relationship with the seismic line name and SP will be lost.


Example of XYZ lines import

  1. Adjust the header so that header information is not included in the import.
  2. Make sure X, Y and Z have the right column numbers.
  3. Set the Cell separator to the line name column in order to separate the lines.