Okla. Stat. tit. 85A, § 328

An application and motion under judicial review of a judgment or award entered by the Commission under this act shall be made in the district court in the county in which the agreement to arbitrate specifies the arbitration hearing is to be held or, if the hearing has been held, in the court in the county in which it was held. Otherwise, the motion may be made in the district court in the county in which an adverse party resides or has a place of business or, if no adverse party has a residence or place of business in this state, in the district court located either in Oklahoma City or Tulsa. All subsequent motions shall be made in the court hearing the initial motion unless the court otherwise directs.