Hi,
Thank you for using it. Always nice when work is appreciated. :-)
I would be very interested in getting that kink fixed. Perhaps you could open a ticket on the github page. It should be possible to have attachments there.
https://github.com/Xcone/factorio_pump/issues
Github is my preference, though I think an account is required there to create an issue. If you don't have, and want, a github account, perhaps you could upload zip file one of the many free file sharing sites. Doing a quick google leads me to https://gofile.io for instance, which accepts files to share through a link you can paste here. If you have dropbox you can share files from there with a link without exposing your other files.
When you upload the file, please also include the save file containing that problematic oil field. I have some outside-of-game test help. But nothing beats being able to do a final test in-game. :-)