Tony,
You have received some good advice. There is also the “accommodation doctrine” you might find useful in considering what to do about the property. Two attorney written blogs about it are here:
http://www.oilandgaslawyerblog.com/2013/02/texas-supreme-court-set-to-aga.html
http://www.oilandgaslawyerblog.com/2013/06/merriman-v-xto-energy---suprem.html