Okla. Stat. tit. 38 § 105
Any person who signs a grand jury petition and subsequently desires to have his or her name removed from such petition may, at any time prior to a determination by the election board of the number of signatures on the petitions, have his or her name removed from said petition by filing a request for removal with the court clerk of the county. If such request is filed with the court clerk prior to the filing of the signed petitions, the court clerk shall hold such notice and deliver it to the election board at such time as the petitions are delivered. If such request is filed after the filing of the signed petitions, the court clerk shall deliver it to the election board. If such request is filed after the election board has certified the number of signatures of said petition, such request shall be void. Such request shall clearly state the desire of the person to have his or her name removed from the grand jury petition currently in circulation and shall bear the signature and address of the person making the request.
Okla. Stat. tit. 38, § 105