Karenda:
I see that you're in Bakersfield. I am, too. There typically are no bonuses paid in California. I am not certain why this is. The amount that is paid is typically just the first year's rent, assuming that it is not a "paid-up" lease, meaning that the oil company has agreed to prepay the rents for the full three year term.
If they have not agreed to a paid-up lease, you will receive the rents annually. Remember, rents are paid on the net acreage that you own and not the gross acreage of the lease. Hope this helps.