055-2 Wyo. Code R. § 2-7
(a) The Supervisor shall require correction, in a manner to be prescribed or approved by him, of any condition which is causing or is likely to cause damage to any formation containing oil, gas, or water, or which is wasteful of oil or gas, or reservoir energy; and require the repair or proper plugging and abandonment of any well or wells no longer used or useful in accordance with such reasonable plan as may be prescribed or approved by him.
(b) Notwithstanding any other provision of these rules, the Supervisor has discretion to require the Owner or Operator to repair or promptly plug and abandon any well that has been shut-in or temporarily abandoned for twenty-four (24) consecutive months, or that is causing waste or pollution.
055-2 Wyo. Code R. § 2-7