"We have a second block that we are about to sign," David Wood, the company's chief executive officer, told the Howard Weil Energy Conference.

In November, Murphy finalized an agreement with the Kurdistan Regional Government-Iraq for 50 percent of the Central Dohuk block, an area covering 619 square kilometers (240 sq miles).

In July, Murphy announced plans to sell its three refineries to focus on oil and gas exploration and its retail business.

Wood told investors that the company has seen "a fair amount of interest" in the plants and a deal may come in the second quarter.

Shares of the El Dorado, Arkansas company were down 13 cents, or less than 1 percent, at $71.74 in morning New York Stock Exchange trading.