Notably, the actual production was within the company's expected range of 515,000-543,000 Boe/d. Devon Energy's strong production is attributable to growth in the company's four key oil assets: Delaware Basin, STACK, Powder River Basin and Eagle Ford. In 2018, Devon Energy's oil-driven capital programs in the United States added 232 million Boe of reserves (extensions and discoveries). This represents a reserve replacement rate of nearly 150% in the United States. During the reported quarter, total expenses decreased 4.7% year over year to $2,224 million. The company continues to advance its $5-billion share repurchase plan. The company has repurchased 90 million shares under the program, and the entire fund, when utilized, will reduce the total share count by 30%. This, in turn, will have a positive impact on its earnings. Realized Prices Realized oil prices in the quarter were $34.58 per barrel, down 18.1% from $42.21 in the year-ago period.