Due to the precipitous drop in oil prices in 2020, oil E&P companies in the U.S. have struggled to pay their debts, and in many cases already have had to file for bankruptcy. In this post, we re-examine how option pricing, a sophisticated valuation technique, can be used to understand the future potential of the assets most affected by low prices, PUDs and unproven reserves. Whether companies are looking to sell these reserves to improve their cash balance, or are trying to generate reorganization cash flow projections during a Chapter 11 restructuring, understanding how to value PUDs and unproven reserves is crucial to survival in a down market.