RE:RE:RE:RE:Question I struggle with on when to buy energy stocks...The impairment test or ceiling test as it is referred to is a test to ensure assets are on the balance sheet at the lower of original cost or net realizable value. If the net realizable value is lower than the cost on the books, an impairment write off must be taken. Symptoms of an impairment being required are negative cash flow over a period of quarters. The NAV of all reserves discounted at 10% is the proxy for net realizable value. So compare the fixed assets on the books less accumulated depreciation to the most recent NAV from reserve report. If the NAV is lower a write down may be required. If NAV is higher no problem. I think you will find that no companies in the sector are at risk of a write down unless crude were to go sub $55. In YGR's case it's not even close.