Hurricane Ida aims for Gulf of Mexico oil fields

((For more details on energy operations in the Gulf click on: [N08202278]))

* Category 2 hurricane forecast to weaken gradually

* Floods, mudslides from rains kill 124 in El Salvador

* Louisiana governor declares state of emergency

(Changes dateline, updates storm position, hurricane warnings, oil company shutdowns)

By Nelson Renteria

SAN SALVADOR, Nov 8 (Reuters) - Hurricane Ida roared through the Gulf of Mexico on Sunday, where important oil fields are located, after triggering floods and mudslides that killed 124 people in El Salvador.

Ida was expected to weaken gradually on Monday as it heads toward some of the oil and gas production facilities in the central Gulf, the U.S. National Hurricane Center said.