Export from Petra, Import to Techlog

You can export selected wells from IHS Petra (v. 4.1.1) to a PPF file, and then import them into Schlumberger Techlog (v. 2013.2.0).  This will include all well information, location, zones, intervals, tops, variables, plug data, raster images, and perforations, according to Techlog help (“Importing from Petra”).

In Petra:

  1. Select your well list.  If you have a large number of wells (more than 500), I would suggest splitting up the well list into multiple exports.
  2. Project–>Export–>Petra Project File (*.ppf)…
  3. Choose settings.

    1. Remember to uncheck the “Encrypt well identifiers” box.

Locate your exported file in Windows Explorer.

In Techlog:

  1. If you have not set up a naming scheme for your project (or different than “STATE SAETZ 14-36” and variations), you can change a setting to name all the wells based on API or UWI.

    1. Open the project properties pane (your default bottom-left properties pane) with the convoluted Project–>Project utilities–>Edit the properties
    2. Select the “Project Properties” tab in the properties pane.
    3. Under “Import (LAS/DLIS/Geolog ASCII)” there is a “Well name” field.  
    4. Enter the field containing your well name.

      1. For me, importing a PPF, this is “UWI.”  
      2. If you are importing lose LAS files, you can open up the LAS file in a text editor and see what header field you should use.
  2. Open the Import pane.
  3. Drag your exported file from the Windows Explorer window to the Import pane in Techlog.

    1. This is the key step.  If you try to add the file as ASCII with the wizard (the only way I could get it to show up in the dialog), the wizard won’t identify it as a PPF file and won’t read the format correctly.

Petra: Select wells with a datum

In Petra 4, to select wells that have a datum (e.g., if you want wells you can export with sub-sea true vertical depth [SSTVD] rather than just measured depth [MD]), the correct search criterion is Well Header–Datum–By Active Datum–Datum Is Between the Minimum and Maximum, and set the minimum depth to something greater than one.