There might be some semi-permanent change in people's behaviors if the epidemic continues for many months. Many people will form a habit of doing more things at home/online: more takeouts, more online shopping, live/recorded video classes, virtual meetings, telehealth, etc. Better online services will also spring up to support the habits/practices.
Since online activities often save time, the new habits could become a new equilibrium: people/companies who adopt them will often have an economic advantage, influencing others to do the same. Thus, oil demand could be significantly diminished long-term as well.