Okla. Stat. tit. 11 § 21-202
The owners of a tract of land located not more than ten (10) miles from the nearest limits of the municipality, or located at any greater distance which is reasonable under the circumstances in order to secure the most desirable site, may present to the governing body a plat of the tract of land prepared in the same manner as a plat for a proposed municipal incorporation. The governing body shall examine the plat and may require amendments and changes as it deems expedient. If the governing body finds that the area contained in the plat is a suitable and desirable site for the municipality, it shall call for a special election on the question of whether the territory comprised within the plat shall be annexed to the municipality and serve as the new site for the municipality.
Okla. Stat. tit. 11, § 21-202