Are you equating production and inventory with trade speculation?
Each drilling rig stacked out represents roughly $100,000,000 dollars in drilling and completion costs which will not be spent.
In this State alone, that's $1.5 billion, and that money went all over the country as paychecks, as durable good orders, and for supplies and consumables, it didn't all stay here.
Production is a much more narrow profile when it comes to economic activity, with the revenues ending up in far fewer hands.
Inventory is for mid-stream and downstream folks. We're on the upstream end, E & P.