深水双梯度钻井方法研究

Research on the Deepwater Dual Gradient Drilling Technology

世界深海油气资源充足,但对深水油气的开发还不是十分完善。本文研究了国外采用的深水双梯度钻井技术,详细阐述了它的技术方法、工作原理以及这些年来开发的系统。双梯度钻井系统相对于常规钻井,它的优势是建井周期短、操作更安全、生产成本低、产量高。双梯度钻井技术可以为我国南海油气的开发提供技术保障,对我国的深水开发具有指导意义。

World deepwater oil and gas resources are adequate, but also the development technology of deepwater oil and gas is not very perfect. In this paper, the deepwater dual gradient drilling technology was studied, and its process methods, working principle and development of the system over the years were discussed. Compared with the conventional drilling systems, the dual gradient drilling system has many advantages, such as short building cycle, safe operation process, low production cost and high production rate. The dual gradient drilling technology can provide the technical support for development of oil and gas in South China Sea, and have guiding significance for development of the deepwater oil and gas resources in China.