Okla. Stat. tit. 20, § 20-1008: Destruction of depositions

In each county of this state, the court clerk is hereby

authorized to destroy, from time to time, depositions taken in all

civil cases and domestic cases in which no minor child is involved,

except adoptions, after a ten-year period, and depositions taken in

domestic relations cases in which a minor child is involved may be

destroyed after a twenty-year period has elapsed since any pleading

has been filed or any action taken in the case.