Okla. Stat. tit. 57, § 57-354: Continuing study of prisoner by pardon and parole board -

Hearings - Recommendations.

Upon the commitment to imprisonment of any prisoner, the Pardon

and Parole Board shall cause a continuing study to be made of the

prisoner. When the prisoner has served the minimum sentence

imposed, or as soon thereafter as he or she can be heard, the Pardon

and Parole Board shall hear the application of the prisoner for

parole, and shall make such recommendation to the Governor as, in

its discretion, the public interest requires.