"Derrick" means any framework, tower, or mast together with all parts of and appurtenances to such a structure including any foundations, pumphouse, pipe racks, and each and every party thereof which is or are required or used or useful for the drilling for and the production of oil, gas, or other hydrocarbons from the earth, except tanks used for storage purposes.
(Ord. 90-08-1074 § 4 (part))