Ill. Admin. Code tit. 62, § 250.20
b) If the tract of State owned land requested to be designated as proven or unknown territory is owned by the Department of Natural Resources no extraction activities shall be performed nor production equipment located on Department lands. Requests for extraction activities underlying lands owned by the Department of Natural Resources that utilize directional drilling techniques may be permitted at the discretion of the Department and will be designated in accordance with this Section. The Department shall not grant permits or leases for the extraction of oil, gas, and other petroleum deposits from the following classifications of lands if the State owns 100% of the underlying mineral interests under the proposed drilling unit:
c) The request must be submitted to the Office in writing and include: