Okla. Stat. tit. 22, § 22-793: Reading deposition on trial

Depositions taken under a commission may be read in evidence by

either party on the trial upon it being shown that the witness is

unable to attend from any cause whatever, and the same objections

may be taken to a question in the interrogatories, or to the answers

in the deposition, as if the witness had been examined orally in

court.