A tanker truck drives past oil well pump jacks operated by Chevron Corp. in San Ardo, California, U.S., on Tuesday, April 27, 2021.

Oil prices fell more than $1 a barrel on Wednesday in another see-saw trading session, as investors feared this week's collapse in OPEC+ talks could mean more supply, not less, is on the way.

Crude markets have been volatile over the last two days following the breakdown of discussions between major oil producers Saudi Arabia and United Arab Emirates. The market has alternated rallies and selloffs, a signal investors are unclear what the OPEC+ standoff means for worldwide production.