HOUSTON, March 23 (Reuters) - Chevron ( CVX ) CEO Mike Wirth

said he is uncertain how quickly shut-in production in the

Middle East can come back amid the ongoing conflict in the

region.

"'It will take time to come out of this," he said on Monday at

the CERAWeek conference in Houston. He said that current oil

prices could stimulate more U.S. production growth, depending on

the length of the conflict. Tightness in the energy market due

to closure of Strait of Hormuz has not been fully priced in to

forward curve, he added.