It is intended by this chapter to establish a category of combining oil zones in which present and future oil development and operations will be permitted under certain limitations for the purpose of making possible land uses, including, but not limited to: recreational, recreational/residential, residential, institutional and commercial development compatible within oil field areas in the city and to permit the drilling for and production of oil, gas, other hydrocarbon substances and water and the maintenance and operation of equipment and structures for such drilling and production within the various combining oil districts as provided in this chapter. For purposes of this chapter, the term "oil" includes in its meaning "oil, gas, water and other hydrocarbon substances or any combination thereof."
(`78 Code, § 17.60.010.)