Research on the Destabilizing Factors of the Seabed and the Response Methods of Well Construction.

Offshore oil development is gradually advancing to deep water, and the complex seabed topography and shallow geological conditions greatly affect the difficulty of subsea well construction and threaten the safety of drilling operations. To reduce the risk during drilling and optimize the drilling plan, the cause mechanism of complex seabed topography and shallow geological conditions is outlined, and the countermeasures taken by China National Oil Corporation (CNOOC) to deal with different seabed topography and shallow geological conditions are collected. The research results are of great significance in guiding the construction of subsea wells in the South China Sea. [ABSTRACT FROM AUTHOR]