关键词: 弱挥发油, 油藏, 数值模拟, 开发经验, 长春油田

Abstract: Changchun Oilfield is a weak volatile oil reservoir found in 1988. It belongs to faulted oil and gas pool. The oilfield adopted the policy of outer edge waterflood and high-speed development. The maximum production,which was 63.4×10⁴t in 1990, dropped to 7×10⁴t in 1994, and 2.85×10⁴t in 1999.The composite water cut changed from zero to 86.3%. The oilfield is now in the late stage of development. The features showed during the development resemble that in dissolved gas drive. Recovery efficiency is forecasted only 27%,23% lower than the ideal plan of numerical simulation. This paper expatiates the geological characteristic and types hydrocarbon's fluid in the oilfield and summarizes the course,features and experience in the oilfield development. It also concluded that the key issue for developing volatile oil reservoir and weak volatile oil reservoir is to keep reservoir pressure higher than saturation pressure. The importance of numerical simulation in the development of hydrocarbon reservoir is emphasized.

Key words: weak volatile oil, reservoir, numerical simulation, exploitation experience, Changchun Oilfield