Okla. Stat. tit. 12 § 721
A copy of any foreign judgment authenticated in accordance with the applicable Act of Congress or of the statutes of this state may be filed in the office of the court clerk of any county of this state. The clerk shall treat the foreign judgment in the same manner as a judgment of the district court of any county of this state. A judgment so filed has the same effect and is subject to the same procedures, defenses, and proceedings for reopening, vacating, or staying as a judgment of a district court of this state and may be enforced or satisfied in like manner. Provided, however, that no such filed foreign judgment shall be a lien on real estate of the judgment debtor until the judgment creditor complies with the requirements of subsection B of Section 706 of this title.
Okla. Stat. tit. 12, § 721