California Code, Public Resources Code - PRC § 3723.5

Any person who acquires the ownership or operation of any well or wells, whether by purchase, transfer, assignment, conveyance, exchange, or otherwise, shall, within 30 days after acquiring the well or wells, file with the supervisor an individual indemnity bond in the sum of twenty-five thousand dollars ($25,000) for each well acquired, or a blanket indemnity bond in the sum of one hundred thousand dollars ($100,000) for any number of wells acquired.  The bond shall be stated in substantially the language set forth in Section 3725.