HOUSTON, Feb 27 (Reuters) - The announced cancellation

of a key license for U.S. producer Chevron ( CVX ) to operate in

Venezuela is expected to lead to the negotiation of a fresh

agreement with state company PDVSA to export crude to

destinations other than the U.S., sources close to the talks

said.

As of Thursday, cargoes chartered by Chevron ( CVX ) were departing

as scheduled from Venezuelan ports bound for the U.S. The U.S.

Treasury Department has not published the license's cancellation

terms nor set a deadline to wind down exports.