Progress in a field test is to evaluate and demonstrate the effectiveness of using CO/sub 2/ injection to recover high gravity crude oil from shallow watered-out reservoirs is reported. The reservoir was repressured to approximately 1000 psi with water prior to CO/sub 2/ injection. The plant was completed and injection began on June 2, 1976. The CO/sub 2/ slug was injected in several stages, alternating with water periodically for mobility control and better sweep efficiency. With interruption for the worst winter weather in the area's history, CO/sub 2/ injection was completed on June 14, 1977, with a total injection of approximately 9878 tons. Soon after injection began, unexpected increases in oil production occurred both inside and outside the pattern. CO/sub 2/ was also detected in the produced gas from these wells. These production increases were without accompanying water increases as had been expected. These, and other continuing ''puzzles'', are described. Through June 30, 1977, approximately 5720 barrels of oil had been produced as a result of CO/sub 2/ injection. (JRD)