(a)Discuss the major differences between impairment rules for proved properties and unproved properties for successful efforts companies.

(a)Sandman Oil Company, a successful efforts company, has three fields, A, B, and C.Costs and cash flows for the three fields are as follows:

Field AField BField C

Net capitalized costs4,000,0005,000,0006,000,000

Expected undiscounted future cash flows4,500,0004,000,0005,000,000

Expected discounted future cash flows3,850,0003,900,0003,700,000

Determine the impairment charge for each lease for the year.

(c)What are the major differences between the sales method and the entitlement method of accounting recognizing gas revenue?