■ On the evening of Oct. 14, Cnooc Tianjin reported an oil spill near its Jinzhou 9-3 field in northern Liaodong Bay. The annual processing scale of natural gas in Zhuhai terminal is 1.6 billion cubic meters, which mainly supplies natural gas demand in Zhuhai, Zhongshan, Macao and other regions. The pipeline pressure relief work is expected to be basically completed today.
"Water jet" spotted on the morning of 19th
Net natural gas production affected by the incident was about 160 million cubic feet per day (26,700 barrels of oil equivalent per day), according to cnooc's previous announcement. It was the company's fourth spill this year.
Yesterday zhuhai maritime Safety Administration announced the discovery of the process of undersea gas pipeline leakage. Cnooc confirmed the next day that the oil spill in the undersea pipeline of Jinzhou 9-3 oilfield was caused by the damage of the undersea mixed transport pipeline from platform B of Jinzhou 9-3 oilfield to the central platform during the construction of propagation anchor lifting. Cnooc and relevant national departments will continue to closely monitor the situation. The incident is a natural gas pipeline leak, the impact on the environment is small. It is reported that at around 9 am on December 19, the duty office of zhuhai Maritime Administration received a call from a sailor who reported that a jet of water was found in the waters near Shilanzhou, Hengqin, Zhuhai. The suspected leakage of an undersea pipeline was reported. Cnooc reported after the accident, no casualties, no oil spill.
Cnooc said it was ready to investigate the cause of the accident. Yesterday, cnooc confirmed to the reporter that the company received a notice from zhuhai Maritime Safety Administration on December 19 that the company's subsea natural gas pipeline near zhuhai Hengqin natural gas processing terminal was leaking.
■ At 4:10 am on July 11 this year, mechanical seals of the bottom pump of three 400-unit reforming oil tower operated by China National Offshore Oil Refining Co., Ltd. in Daya Bay Petrochemical Zone of Huizhou caught fire and exploded. Through diving exploration of the submarine pipeline, relevant departments confirmed that the broken point of the pipeline is 68 meters away from platform B, and the initial calculation of oil spill is not more than 0.38 cubic meters.
■ In June this year, two oil spills occurred on platform B and platform C in the operation area of Penglai 19-3 Oilfield, bohai Bay, the largest offshore oil and gas field in China. After that, it will enter the leak point exploration and plugging disposal.
According to the person, after the incident, CNOOC Ltd. immediately activated the emergency plan for Marine pipe leakage, and promptly shut down the production of panyu 30-1 and Huizhou 21-1 related platforms.
Cnooc and its oil and gas fields and refining companies have suffered four spills since June.
According to data released by the State Oceanic Administration (SOA), the oil spill in Penglai Oilfield has caused a certain degree of pollution damage to the Marine environment in the oilfield and its surrounding waters, with 840 square kilometers of water in the surrounding waters changing from class I to Class IV overnight. According to preliminary judgment, the pipeline damage is suspected to be caused by external factors, and natural gas leakage is caused.
Cnooc is currently carrying out pressure relief and venting through the offshore platform and the torch terminal in Zhuhai as planned and programmed. As for the State Oceanic Administration's final determination that the oil spill in Penglai Oilfield was man-made, it should be eliminated, especially in the follow-up reaction after such a large oil spill and in the supervision of Conocophillips China, Cnooc appeared "management blind spot". After the pipeline pressure relief work is completed, the risk of natural gas leakage to external safety and environment is basically eliminated.
■ On the evening of December 19, China National Offshore Oil Corporation LTD (CNOOC) announced that there was a leak in the undersea natural gas pipeline near hengqin Natural gas processing terminal in Zhuhai, Guangdong province. About 700 barrels of crude oil and 2,589 barrels of mineral oil-based mud spilled from the two spills, according to data provided by Conocophillips China at the field. To ensure safety, CNOOC and relevant government departments have set up two cordons around the site of the incident and taken other safety measures. The Panyu - Huizhou joint Natural gas Development project is to transport natural gas from Panyu 30-1 gas field and Huizhou 21-1 gas field 136 kilometers away from it to the natural gas processing terminal on Hengqin Island of Zhuhai and the adjacent 3,000-ton liquid product export terminal through a total length of about 365 kilometers submarine pipeline. Despite the fact that there were no casualties, such a high frequency of large spills in a year was a wake-up call for an energy company that once had a good reputation in the capital markets at home and abroad.
■ Why are accidents so frequent
Zhuhai terminal is the natural gas processing terminal of panyu - Huizhou joint natural gas development project.
The Cnooc spill ledger
Why are there so many leaks in one year? Although according to the results released by CNOOC afterwards, the proportion of emergencies and accidents is more than that of artificial ones, after careful analysis, the leakage caused by emergencies and accidents can also be avoided to a large extent. Upon receiving the report, zhuhai Maritime Safety Administration immediately sent vessels to the scene to investigate and verify the situation, and dispatched vessels to set up a warning zone in the area where the incident occurred for traffic control.
■ Cnooc has activated its contingency plan
The haze of oil spill in Penglai oilfield has not dissipated, and the cnooc Zhuhai Hengqin gas pipeline leakage accident occurred again.
