关键词: 沈阳油田, 稠油开采, 油田开发, 高含蜡原油, 高凝原油, 注热水, 由藏数值模拟, 热电联产

Abstract: The crude oil from Shenyang oil field has a high wax content and a high pour point, this makes it difficult to exploit. The permeating characteristic of the high pour point oil has been observed at different temperature in laboratory test. The difference of the permeating characteristics between the temperature above and below the cloud point has been analyzed. It is found that, when it flows through a core at a temperature below the cloud point waxy damage will occure. Based on the experiments, a two dimensional two phase numerical model which shows the effect of paraffin deposion is established. The results of running the model with data from Shengyang oil field's indicates that the early cooling injection into the reservoir will cause waxy damage and the damage appears only in a region around the injection well. A proposal that a slug of hot water should be injected into the strata before the cool water is made in the paper. Methods of how to select the water injection temperature and the hot water slug size are put forward. Finally, a suggestion of developing the field with energy saving and energy comprehensive usage, or linking heat and electricity generation and oil thermal recovery into one system, is given.