[This article is about urban gas drilling in the first large urban field in the nation, Fort Worth, Texas. But lest you think it doesn't apply to you, think again. It will be coming to a shale bed gas field near you soon. The author is not a lawyer and nothing in this article should be construed as legal advice.]
You've been taken for a fool. You've signed a fraudulent contract. You were deliberately not given certain material facts about the contract that would have influenced you to throw it in the trash where it really belongs. This contract is, under contract law, unenforceable because of its fraudulent nature.
Here's the truth about your mineral lease.
Now that a large number of your neighbors have joined you in signing, your lessee has powers you never were told about. The lessee can essentially do whatever he wishes on the surface to produce the gas under your property. He can hold your property hostage at his discretion for decades by performing inexpensive, non-productive tasks as provided by the contract. Much of his power depends on his stated reasons for his actions--reasons that you cannot challenge with any degree of hope for success and that will cost you dearly in legal fees if you do. He can, and from all historical evidence will, pollute any surface location where he installs mineral extraction equipment. He does not care what you think about it.