How exploited Libyan oil might have changed the naval war

What would the Mediterranean war look like if Libya's oil fields had been developed before 1939?

Axis fuel supply could improve, but the refineries would become high-priority British targets and their location would be decisive.

The counterfactual starts with Libyan oil fields being exploited before the war. Their effect would depend heavily on where refining facilities were built. Refineries would become priority targets for British attack, linking the land resource directly to control of the sea and air. If they remained usable, Rommel's army would face a materially easier fuel situation.