Okla. Stat. tit. 64 § 1018
Any person, firm, business, or other entity who, without written authority from the Commissioners of the Land Office, trespasses, uses, cuts timber, injures or destroys surface or subsurface lands or improvements, removes anything of value from the surface or subsurface, assumes possession without a lease or other legal interest in the lands, or who refuses to surrender possession at the expiration, rescission or termination of a lease or easement shall be subject to a civil action for actual damages, possession of the land, injunction, civil penalties equal to the amount of actual damages, attorney fees, litigation expenses, sheriff fees and court costs. Damage claims shall carry sixteen-percent interest from the date of injury. The person, business or other entity shall also be subject to criminal penalties as may be provided by law.
Okla. Stat. tit. 64, § 1018