Successful Efforts Impairment Under ASC 360

Introduction

E&P companies using the successful efforts method test for impairment under ASC 360-10, the standard GAAP framework for long-lived assets. This approach differs fundamentally from the ceiling test: it is event-driven rather than quarterly, operates at the individual property level rather than the aggregate cost pool, and uses undiscounted cash flows as the first threshold. These differences make SE impairments less frequent and less predictable than FC write-downs, with important implications for cross-method comparisons.

Unlike the ceiling test (which is mandatory every quarter regardless of market conditions), ASC 360 impairment testing is triggered only when specific events or changes in circumstances indicate that a property's carrying amount may not be recoverable. Common triggering events for E&P companies include:

When a triggering event is identified, the company performs a two-step impairment analysis at the property or asset group level.

Step 1: Recoverability Test (Undiscounted Cash Flows)

The company compares the carrying value of the property (or asset group) to the sum of its expected undiscounted future cash flows. If undiscounted cash flows exceed the carrying value, the property passes the test, and no impairment is recorded. If undiscounted cash flows are less than the carrying value, the property fails the recoverability test and proceeds to Step 2.

The use of undiscounted cash flows in Step 1 is critical and is the primary reason SE impairments are less frequent than FC ceiling test impairments. Undiscounted cash flows are always higher than discounted cash flows (PV-10), which means the Step 1 threshold is easier to pass. A property with a carrying value of $500 million and undiscounted future cash flows of $520 million passes the recoverability test even if the discounted value (PV-10) is only $400 million. Under the FC ceiling test, the same property's contribution to the cost pool would be evaluated against PV-10, which would fail.

Asset Group (ASC 360)

The lowest level of identifiable cash flows that are largely independent of the cash flows of other assets. For SE E&P companies, the asset group is typically defined as an individual field, lease, or group of related properties. The asset group definition determines the level at which impairment is tested and can significantly affect whether an impairment is recognized. A broader asset group (combining profitable and unprofitable properties) is more likely to pass the recoverability test than a narrower group that isolates an underperforming property.

Step 2: Fair Value Measurement

If a property fails the Step 1 recoverability test, the company must measure the impairment loss as the amount by which the carrying value exceeds the property's fair value. Fair value for oil and gas properties is typically determined using discounted cash flow analysis (present value of expected future net revenues, often at a risk-adjusted discount rate) or, less commonly, through market-based approaches (comparable transactions, reserve acquisition metrics).

The impairment loss is recorded on the income statement and permanently reduces the property's carrying value. Like the ceiling test, ASC 360 write-downs are irreversible under GAAP.

SE companies treat proved and unproved properties differently for impairment purposes.

Proved properties (properties with proved reserves) are tested under the two-step ASC 360 framework described above, using projected production, commodity prices, and operating cost assumptions to estimate future cash flows. The analysis is quantitative and relies on the same reserve engineering and commodity price scenarios used in NAV models.

Unproved properties (exploration acreage without proved reserves) are assessed on qualitative factors: remaining lease term, geological prospectivity, the company's intent to develop, and results from nearby drilling. If the property is no longer likely to be developed (lease expiring, geology unattractive, or plan abandoned), it is impaired to estimated fair value, which may be zero.

Three structural features of the ASC 360 framework result in fewer impairment charges than the FC ceiling test:

The combination of these factors means that an SE company experiencing a moderate commodity price decline may not record any impairment, while an FC company facing the same decline may record a mechanical ceiling test write-down.