Operating Unit shall be defined as: All of the contiguous lands lying within any portion of the City in which drilling is permitted, and which lands are included in the terms of the lease, permit or other agreement pursuant to which the well in question is drilled or authorized to be drilled, whether such lands are in one ownership or in different ownerships, and whether such lands are described in said lease, permit or agreement as one parcel or as several parcels. If there are separate units of non-contiguous lands containing at least one net acre included in the terms of such lease, permit, or agreement, each such unit shall be deemed a separate Operating Unit.