Ill. Admin. Code tit. 62, § 250.30
a) Any person (applicant) may request a permit to explore for oil and gas on State owned land designated as unknown territory in accordance with Section 250.20 of this Part. The request shall not be made for more than three sections of land or equivalent acreage (1920 acres) and shall not contain any land where the oil and gas rights are not wholly owned by the State of Illinois. The request shall:
b) If an applicant for a permit to explore for oil and gas on State owned land complies with the provisions of subsection (a), the Office will direct the applicant to secure a signed agreement with the State agency owning the land to be explored, encompassing the scope of all aspects of the exploration operations contemplated by the permittee, including but not limited to:
d) The permit to explore shall:
5) be limited to the following exploration activities: