---------------------------------- 12364 **************** IN BIG PERU HEAVY OIL FIND LOS ANGELES, April 7 - Occidental Petroleum Corp said the Shiviyacu-23 development well on Block 1-AB in the Peruvian Amazon jungle is producing 6,593 barrels of 22 degree gravity oil per day from depths of 9,543 to 9,547 and 9,556 to 9,599 feet. The company said it is drilling a new exploration well on the block, Southeast Shiviyacu-1, 2.5 miles away.