JERUSALEM, Oct 22 (Reuters) - Israel's offshore Tamar

natural gas field closed on Wednesday for scheduled maintenance

that is expected to last about 12 days, the site's operator

Chevron ( CVX ) said.

Tamar is Israel's main domestic gas supplier. The larger

Leviathan field off Israel's Mediterranean coast, a key supplier

to Egypt and Jordan, remains operational.

"We will continue to produce natural gas and supply

customers in Israel and in the region from the Leviathan

reservoir," Chevron ( CVX ) said in a statement.

Six production wells at Tamar produce volumes of natural gas

ranging from 7.1 million cubic meters to 8.5 million cubic

meters per day, according to Chevron ( CVX ).