How can I fix a small hole in my car's oil pan without taking it off?

I have a Saab, which sits low to the ground. I scd the oil pan on something, and it leaks pretty bad. I am wondering if there is something I can use to fix the small hole, without removing the oil pan. Products such as JB-Weld, epoxy or other adhesives won't stick to the oily surface. And I don't have a welder or blowtorch to melt some metal into the hole. Anyone have any ideas? Thanks!