Curtis, Mallet-Prevost, Colt & Mosle has won a $1.9 billion settlement for the Republic of Kazakhstan in a profit-sharing dispute with major international oil companies.

The negotiated settlement, announced Dec. 14, ended a six-year dispute over the contract terms for exploiting the giant Karachaganak oil and gas field, and resulted in the largest payment ever to Kazakhstan in settlement of an arbitral dispute, according to a statement from Curtis.