1. Number of oil and gas fields: According to the public information of CNOOC, they have developed and built several oil and gas fields offshore, and the exact number is unknown. In addition to domestic offshore oil and gas fields, CNOOC also conducts oil and gas exploration and production in many overseas countries and regions. Generally speaking, CNOOC's development and construction in the marine field is quite large, and it has also made certain achievements in technology and management.
2. Company Profile: China Offshore Oil Group Co., Ltd. (hereinafter referred to as "China Offshore Oil" or "CNOOC") is a super-large state-owned enterprise (central enterprise) directly under the State-owned Assets Supervision and Administration Commission of the State Council, China, headquartered in Beijing, with 98,750 employees and four upstream branches in Tianjin, Zhanjiang, Shanghai and Shenzhen.
3. Company business:
1) Offshore oil business: CNOOC has maintained a good development trend since its establishment. From an upstream company solely engaged in oil and gas exploration, it has developed into a comprehensive energy group with prominent main business and complete industrial chain, forming business sectors such as oil and gas exploration and development, professional technical services, refining and chemical sales, fertilizer, natural gas and power generation, financial services and new energy.
2) Oil and gas exploration: By the end of 20 13, CNOOC had four oil-producing areas along the coast of China: Bohai Sea, western South China Sea, eastern South China Sea and East China Sea. CNOOC is one of the largest offshore crude oil producers in Indonesia. At the same time, CNOOC has upstream assets in Nigeria, Australia and other countries.
Deep water challenge
1. With the increase of water depth, the riser is required to be longer, the volume of drilling fluid is larger, the pressure level of equipment is higher, the weight of riser and BOP is greatly increased, and sufficient deck load and deck space are required. On the other hand, the increase of water depth and the harsh working environment in deep water increase the non-working time of drilling, which puts strict requirements on the reliability of equipment. When selecting deepwater drilling equipment, equipment and technology, it is necessary to check the water depth separately.
2. Low seabed temperature may lead to high bottom hole temperature, which brings many problems to drilling operation. If the viscosity and shear force of drilling fluid increase greatly at low temperature, obvious gelation will occur, and the possibility and risk of forming natural gas hydrate will increase.