Mich. Comp. Laws § 324.61525a
The owner or operator of a well used for injection, withdrawal, or observation related to the storage of natural gas or liquefied petroleum gas that has been used for its permitted purpose at any time during the calendar year immediately prior to the time the fee is due is subject to a $20.00 annual well regulatory fee. The owner or operator of a well described in this section shall file an annual report by January 31 of each year stating the number of wells used for injection, withdrawal, or observation related to the storage of natural gas or liquefied petroleum gas that has been utilized for its permitted purpose during the previous calendar year. The report shall include a list of wells identified by permit number, permit name, and gas storage field name on a form provided by the supervisor, or such other form which may be acceptable to the supervisor. The annual well regulatory fee described in this section is due not more than 30 days after the supervisor sends notice to the owner or operator of the amount due. The supervisor shall forward all fees collected under this section to the state treasurer for deposit into the fund.
MCL 324.61525a