China National Offshore Oil Corp, the country's largest offshore oil explorer, said on Monday that crude production of a floating production, storage and offloading vessel was 22 percent higher than the target set in 2015.

CNOOC said that the FPSO-118, the latest vessel in the company's 15-member fleet, attained production efficiency of 99 percent, a considerable improvement in terms of safety and reliability.

The FPSO-118, located 200 kilometers off the Hong Kong coast, is used to develop and process crude oil from the Enping 24-2 oilfield in the South China Sea, and has an annual crude processing capacity of 2 to 3 million metric tons.