I've been around a lot of oil fields, and it is certainly not typical to have an oil company logo on the storage tanks or brine tanks which are out in the field. Normally, they are painted with aluminum paint and gradually accumulate a grey color, with some streaks of grimy black and a little rust. Usually an independent producer and not an oil company owns the wells, along with the pump jacks and tanks. In California oil fields it was more typical for oil companies to own large leases and to pump their own crude, but, again, there was no need for logos in the field.
At refineries, however, tanks are often white with oil company logos.
