Your post sat unanswered for so long, so maybe now it isn't a disaster any more? In case you still have the oil in the carpet, here's a website to check out. You can choose oil as the stain and read some of the suggestions. Also you can call them at their 800 number. I have called twice to get help getting tape marks off the carpet, and they were very helpful and what they told me to do worked too.

Here is a link that might be useful: Carpet stain removal