Proposed lease for deep rights in 15N-25W

My family received a proposal to lease deep rights in 15N-25W. We do not have a copy of the current lease (HBP) so do not know if there is a depth clause. I have a couple questions if anyone can provide information. Thank you in advance.

Is there active drilling for deep rights in this area?

Is there any information on the going bonuses for this type of lease for 3/16? 1/5? Can anyone recommend an attorney or mineral rights consultant in or who is knowledgeable about this type of leasing in Roger Mills County?

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