Wyo. Stat. § 36-6-302: "Return on investment" deduction not allowed for calculation of royalty.

(a) For state lease royalty and overriding royalty, other than royalty owing to the United States of America, calculations for oil, natural gas and associated natural resources, neither lessee nor any successor in interest will be allowed any deduction for any "return on investment cost."

(b) This article applies to all state leases of oil, natural gas or associated natural resources.