It shall be the duty of the well operator to keep a geologic log prepared by a competent petroleum geologist showing the character, thickness, and depth of the formations encountered in the drilling of a well and the depths at which all oil, gas, water, or other substances are encountered. The log shall show whether the well is productive of oil, gas, water, or other substances, the quantities thereof, and the initial pressure and production measured over a period of at least 48 hours. A copy of the well log shall be furnished to the Board within 30 days of the completion of the well. Such reports shall be held confidential; provided, however, that the State Geologist shall have access to this information. (Added 1981, No. 240 (Adj. Sess.), § 2, eff. April 28, 1982.)