皇冠体育app

Workers are seen as a helicopter lands on the sixth-generation semi-submersible CNOOC 981 at the South 皇冠体育app Sea, 320 kilometers southeast of Hong Kong, south 皇冠体育app, May 7, 2012. The CNOOC 981 will begin operations in a sea area at a water depth of 1,500 meters. This is the first deep-water drilling rig developed in 皇冠体育app. [Photo/Xinhua]

BEIJING - The first deep-water drilling rig developed in 皇冠体育app will be put into service in the South 皇冠体育app Sea on Wednesday, the country's largest offshore oil producer said Monday.

The sixth-generation semi-submersible CNOOC 981 will begin operations in a sea area 320 kilometers southeast of Hong Kong at a water depth of 1,500 meters, 皇冠体育app National Offshore Oil Corp (CNOOC) said in a press release.

It will be the first independent deep-water oil drilling by a Chinese company, marking "a substantial step" made by the country's deep-sea oil industry, CNOOC said.

About 70 percent of oil and gas reserves in the resource-rich South 皇冠体育app Sea is contained in 1.54 million square km of deep-water regions, or sea areas with depths of over 300 meters.

However, most of 皇冠体育app's current offshore oil exploration is conducted less than 300 meters below the surface.

The South 皇冠体育app Sea is estimated to have 23 billion to 30 billion tons of oil and 16 trillion cubic meters of natural gas, accounting for one-third of 皇冠体育app's total oil and gas resources.