Congrats you are a surface owner! Surface and minerals are two different things. Anadarko has contacted me too regarding this. In my discussion with Anadarko I learned there are more than 70 surface owners, Apache owning 63% of surface. I believe my contact at Anadarko was discussing a section or 640 acres. He said he was finding more and more owners as his contact numbers/addresses led to deceased individuals. Ask your contact to show you chain of title to show you are owner, as you should not sign something unless you know you are the owner. Most likely you are or they wouldn't contact you, but it's a free title search for you....and interesting to see the flow chart
My question to anyone: As a small minority interest in surface, what negotiating power do I have on a ROW lease?