Okla. Stat. tit. 20, § 20-12: Fees and costs - Attendance of witnesses

The party demanding a jury shall deposit with the Clerk of the

Supreme Court a sum sufficient to pay the expenses of summoning the

jury and the jurors' fees. The Clerk, Marshal, jurors and witnesses

shall be entitled to the same fees and mileage as are allowed in the

district court for like services. Witnesses may be notified by the

Clerk by mail and shall be required to attend from any county in the

state, if required by the party requesting such witness. The entire

costs in the cause shall be adjudged against the losing party, or

apportioned in such manner as the Court may in its discretion

direct. The Court may require deposits from either party as the

cause proceeds, to secure costs.