Depleted strategic oil reserve nears level that raises concerns about damage to caverns, operations

The U.S. Strategic Petroleum Reserve has fallen to levels that threaten physical damage to the salt caverns holding crude oil, according to energy experts cited by CNBC.

The SPR, a critical emergency stockpile maintained in underground salt domes along the Gulf Coast, has shrunk significantly during recent years. The reservoir now approaches thresholds where continued withdrawal risks structural integrity of the caverns themselves. Salt cavern storage requires minimum pressure levels to prevent collapse and brine intrusion, which degrades stored crude quality.

Energy Department officials face pressure to maintain adequate reserves for national security while managing the fiscal constraints of maintaining the storage infrastructure. The drawdown accelerated following the Ukraine invasion in February 2022, when President Biden released record amounts of crude to ease fuel prices. Additional releases occurred during subsequent inflation-fighting efforts.

The SPR currently sits near 370 million barrels, down from a peak of 727 million barrels in 2016. Experts warn that dropping below 300 million barrels creates genuine operational risk. Once caverns experience structural failure or contamination, restoring them becomes expensive and time-consuming.

Refilling the reserve requires purchasing crude at current market prices, which remain elevated. This creates a political dilemma. The administration must balance emergency preparedness against household energy costs and budget constraints heading into 2024.

The situation reflects broader energy policy tensions. Strategic reserves exist for supply disruptions and national emergencies, not price management. Yet deploying them for inflation control sacrifices their intended purpose while raising future replenishment costs.

Industry observers expect gradual refilling once crude prices stabilize, but the cavern damage risk adds urgency to the timeline. Delaying repairs risks permanent loss of storage capacity at a facility designed to hold America's energy cushion against global shocks.