关键词: 海上油田, 低品位稠油, 常规技术, 热采技术

Abstract: Offshore heavy oil development faces a huge challenge thanks to a number of restraining factors, such as large hole spacing, imperfect well pattern, limited space of platform, limited hoisting and operational capacity, and high offshore HSE requirements. It is of great urgency to adopt effective production technology for development of offshore low-quality heavy oil. This paper provides a panorama of low-quality heavy oil development technology both at home and abroad. Based on the analysis of China’s offshore heavy oil development technology, the paper points out that China’s offshore conventional heavy oil development is successful in terms of the technology used for adjustment of comprehensive oilfield development and the technology used to keep production stable and control water cut. A workable technological family has been established despite some development and production technological issues. However, as for offshore low-quality heavy oil, it is difficult to achieve good results by using such methods as conventional cool flow production, sanding and cool flow production and chemical huff-puff production. It is now making the efforts for thermal production technology. The pilot zone is established for thermal production and on-the-field experiment in an attempt to find the concrete and feasible methods for offshore low-quality heavy oil production.

Key words: offshore oilfield, low-quality heavy oil, conventional technology, thermal production technology