Okla. Stat. tit. 52 § 276
Any person, firm, or corporation, or the Attorney General on behalf of the state, may institute proceedings before the Corporation Commission, or apply for a hearing before said Commission, upon any question relating to the enforcement of this act, and jurisdiction is hereby conferred upon said Commission to hear and determine the same. Said Commission shall set a time and place, when and where such hearing shall be had and give reasonable notice thereof to all persons or classes interested therein, by publication in some newspaper or newspapers, having general circulation in the state, and in addition thereto, shall cause reasonable notice in writing to be served personally on any person, firm or corporation complained against. In the exercise and enforcement of such jurisdiction, said Commission is authorized to determine any question or fact, arising hereunder, and to summon witnesses, make ancillary orders, and use mesne and final process, including inspection and punishment as for contempt, analogous to proceedings under its control over public service corporations, as now provided by law.
Okla. Stat. tit. 52, § 276