Okla. Stat. tit. 58, § 58-22: Who may petition court for proof of will

Any executor, devisee or legatee named in a will, or any other

person interested in the estate, may at any time after the death of

the testator, petition the court having jurisdiction to have the

will proved, whether the same be in writing, in his possession or

not, or is lost or destroyed, or beyond the jurisdiction of the

state, or a nuncupative will.