Illinois Statutes Chapter 225. Professions,Occupations and Business Operations § 730/1. Logs of wells to be filed in Geological Survey office; contents of logs

§ 1. It is the duty of the permittee of any well drilled or deepened for oil or gas, to file all geophysical logs and a well drilling report of said well in the office of the State Geological Survey of the University of Illinois within 90 days after drilling ceases.

The well drilling report: (1) shall show the character and depth of the formations passed through or encountered in the drilling of the well, particularly showing the depth and thickness of oil-bearing strata, and gas-bearing strata, (2) shall show the position and thickness of coal beds and deposits of mineral materials of economic value, and (3) shall give the location of the hole.

The Department of Natural Resources shall supply to the Illinois State Geological Survey a copy of each permit, showing the location of the well.