We got #4 wrong here. Maybe not capping, but oil wells are being shut down.
See this article about Enerplus wells in Montana, North Dakota and Canada: https://www.thestar.com/business/2020/04/22/enerplus-shutting-in-us-and-canadian-wells-due-to-low-crude-oil-prices.html https://twitter.com/xrportsmouth/status/1252929492986798080
See this article about Enerplus wells in Montana, North Dakota and Canada: https://www.thestar.com/business/2020/04/22/enerplus-shutting-in-us-and-canadian-wells-due-to-low-crude-oil-prices.html https://twitter.com/xrportsmouth/status/1252929492986798080

*Shut in* not ‘shut down’.
Apparently there may be implications where the wellbore “becomes blocked, or pumps fail, and then not be worth the expense of a workover when prices recover”.