The one comforting thing about SLI drilling 10,000m more is of the thinking that why would they put more money into Tesoro if the first 10,000m didn't give them the results they were expecting? You would hope that they would have shifted their focus to Vilcoro instead and spent the money on proving it up.
If SLI uses up all their money on 20,000m of drilling at Tesoro and don't get the results, then I'm thinking they will not get any suitors to help raise funds to drill Vilcoro and the results won't be pretty. Just my 2 cents.