1970, China began to explore and develop oil and gas resources in the East China Sea.
From 65438 to 0982, Japan proposed to China to divide the exclusive waters of China and Japan in the East China Sea by the principle of "median line".
1995, China xinxing oil company successfully tried drilling in Xiao Chun area. At that time, offshore oil and gas business was under the jurisdiction of CNOOC, so it was handed over to CNOOC for management.
In 2000, China Petrochemical acquired China Xinxing Oil.
On August 19, 2003, CNOOC, Sinopec, Shell Company and Unocal Oil Company signed an operation contract for the West Lake Depression, including Chunxiao gas field, in the Great Hall of the People in Beijing, announcing the joint development of oil and gas resources in the East China Sea. Premier Wen presided over the ceremony. CNOOC and Sinopec jointly hold the exploitation license of this oil and gas field. The cost of oil and gas field development is 30% for CNOOC, 30% for Sinopec and 20% for Shell and Unocal. After a year of cooperation, two foreign companies withdrew from the contract in September 2004 for commercial reasons. Informal information, political factors, and the result of Japanese pressure through the United States. In addition, the pipeline from the platform to the land was built by Hyundai Heavy Industries of Korea.
In June 2004, Japanese Foreign Minister yoriko kawaguchi proposed that China and Japan should legally develop East China Sea resources and support private enterprises to explore East China Sea resources. In July, Japan sent a survey ship to explore resources on the Japanese side of the middle line. China protested.
From June 5 to 10, 2004, China and Japan held the first consultation on the East China Sea issue.
In April 2005, the Japanese government began to accept the review of Japanese enterprises' applications for oil and gas exploration rights in the East China Sea.
In May 2005, China and Japan held the second consultation on the East China Sea issue.
In July 2005, the Japanese government granted Imperial Oil Company the right to conduct oil and gas exploration in the East China Sea.
On September 9, 2005, at about 9 am, China Navy patrolled near Xiao Chun oil and gas field in the East China Sea. Warships appear in the form of a fleet, including an 8000-ton "modern" ship, two 2000-ton missile frigates, a 23000-ton supply ship and a missile observation support ship. . . China responded to this move to ensure that its normal interests were not harmed (previously, Japanese P-3C reconnaissance planes frequently monitored within 5 kilometers of Xiaochun's Japanese side).
In May 2005, China and Japan held the third consultation on the East China Sea issue.
In June 2005, 5438+ 10, Xiao Chun oil and gas field was completed, with a daily processing capacity of 965438+ 10,000 cubic meters of natural gas, mainly used in Ningbo. After the expansion, the natural gas pipeline network will be extended to Shanghai and other places.
65438+At the end of February 2005, the natural gas produced by Xiao Chun oil and gas field landed in Beilun, Ningbo, and merged into the urban natural gas pipeline network.
In March 2006, China and Japan held the fourth consultation on the East China Sea issue.
In July, 2006, Zhang, deputy director of the National Development and Reform Commission, inspected the LNG ground receiving station in Zhejiang. The Japanese side strongly protested.