The district judge of the county in which the real property may be situated, upon petition of either party, and after ten (10) days' notice to the opposite party, either by personal service or by leaving a copy thereof at his usual place of residence with some member of his family over fifteen (15) years of age, or, in the case of nonresidents, unknown heirs or other persons whose whereabouts cannot be ascertained, by publication in two issues of a newspaper in general circulation in the county (the ten-day period to begin with the first publication), shall direct the sheriff of the county to summon three disinterested freeholders, to be selected by the judge as commissioners, and who shall not be interested in a like question. The commissioners shall be sworn to perform their duties impartially and justly; and they shall inspect the real property and consider the injury which the owner may sustain by reason of the condemnation, and they shall assess the just compensation to which the owner is entitled; and they shall forthwith make a report in writing to the clerk of the court, setting forth the quantity, boundaries and just compensation for the property taken, and amount of injury done to the property, either directly or indirectly, which they assess to the owner, which report must be filed and recorded by the clerk. A certified copy of the report may be transmitted to the county clerk of the county where the land lies, to be filed and recorded by the county clerk (without further acknowledgment or proof) in the same manner and with like force and effect as is provided for the recording of deeds. The procedure for service by publication as authorized herein shall be the same as provided by law for service by publication in civil actions, except summons need not be issued and served, and except as otherwise provided herein.
Okla. Stat. tit. 69, § 1203