However Petrel is integrated with OpenSpirit, so in theory Petrel should be able to read from an OpenSpirit datastore including SDE. You may not need Data Interoperability as you should be able to do it directly in Petrel using the OpenSpirit adapter.
Just as an FYI, here is a list of OpenSpirit formats which we are currently adding support for at Safe Software (and still beta testing). These should be available in a future ArcGIS Data Interoperability release or service pack.
Thanks for that info. I am currently exploring the OpenSpirit plug-in for Petrel that you mention. It will be nice to see added support for this.
I was able to come up with a work-around for now where I create a tab delimited csv file out of an ERSI GIS vector polyline featureclass file (sub-surface contours) using the Data Interoperability Tool keeping only X,Y,Z attributes which Petrel will except as a general format. Unfortunately this does not include any other attributes. I am able to bring in other attributes as a Petrel Point Attribute file format which includes the X,Y,Z columns plus an addtional column for an attribute to use.