no sence- one hole spud agreement

I did not understand that agreement with PBR was only for one hole. It would be better if they go for some agreement like to spuding of three holes instead of looking for more cash depending upon one hole result. At least 33% chance require three holes. Now there is no furher clarification for more holes. This all should have been cleared in advance. For me Farm in with PBR based on only one hole was not a good deal. Any input.