Okla. Stat. tit. 84, § 81

Every judge of the district court must deposit in his office any will delivered to him for that purpose, and give a written receipt to the depositor; and must enclose such will in a sealed wrapper, so that it cannot be read, and endorse thereon the name of the testator, his residence, and the date of the deposit; and such wrapper must not be opened until its delivery under the provisions of the next section.