I think it is a positive thing to have the survey over your property. A 3-d seismic is a very expensive is very expensive to acquire, process and interpret. Someone thinks it is worth the expense to do the survey over your property. Wells are so expensive to drill that most companies will not drill a well until they have first done a 3-d survey. If your property is not leased the survey will help you get it leased and if it is leased it will help you get a well drilled. I would not hesitate in allowing a survey to be conducted on my property.
Mike