(Adds Q1 details, Q2 forecast, share move, estimates)
May 1 (Reuters) - Noble Energy Inc on Monday reported a smaller-than-expected adjusted quarterly loss as oil prices ticked up after a more than two-year slump, offsetting a decline in production.
Brent crude prices averaged $54.57 per barrel in the first three months of the year, up 55 percent from a year earlier.
Noble's total operating expenses fell 12.7 percent to $1 billion.
Net income attributable to Noble was $36 million, or 8 cents per share, in the first quarter ended March 31. The company posted a loss of $287 million, or 67 cents per share, a year earlier.
On an adjusted basis, the company posted a loss of 5 cents per share. Analysts on average had expected a loss of 14 cents, according to Thomson Reuters I/B/E/S.
The Houston, Texas-based company's total revenue rose 43.1 percent to $1.04 billion, beating analysts' average estimate of $955.1 million.
Total volumes fell 8.2 percent to 382,000 barrels of oil equivalent per day.
However, the company raised the low-end of its second-quarter sales volume forecast to 405,000 boed from 395,000 boed, keeping the top-end unchanged at 415,000 boed.
The company's shares were up 1.9 percent at $32.9 in after-hours trading.
Last month, Noble closed its acquisition of smaller rival Clayton Williams Energy, a move which boosts its presence in the top U.S. shale field, the Permian basin of Texas. (Reporting by Ahmed Farhatha and Arunima Banerjee in Bengaluru; Editing by Maju Samuel)