If the action is pending outside of this state, the district court for the county in which the deposition is to be taken shall issue the subpoena and, upon application, any other order or process that may be appropriate in aid of discovery in that action. Proof of service of a notice to take deposition constitutes a sufficient authorization for the issuance of subpoenas for the persons named or described therein,
If the action is pending outside of this state, the district court for the county in which the production or inspection is to be made shall issue a subpoena for production or inspection as provided in subparagraph b of paragraph 1 of subsection A of this section, if separate from a subpoena commanding the attendance of a person, and upon application, any other order or process that may be appropriate in aid of discovery in that action. Proof of service of a notice of request for production of documents without a deposition constitutes a sufficient authorization for the issuance of a subpoena for production or inspection, and
Any person seeking an order or process in aid of discovery or any person aggrieved by the issuance or enforcement of a subpoena issued in aid of discovery for an action pending outside of this state may obtain judicial assistance or review upon the filing of a civil action and payment of required fees.
Failure by any person without adequate excuse to obey a subpoena served upon him or her may be deemed a contempt of the court from which the subpoena issued.
Okla. Stat. tit. 12, § 2004.1