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首页> 外文期刊>Journal of Petroleum Science & Engineering >Laboratory investigation of thermally-assisted gas-oil gravity drainage for secondary and tertiary oil recovery in fractured models
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Laboratory investigation of thermally-assisted gas-oil gravity drainage for secondary and tertiary oil recovery in fractured models

机译：裂缝模型中热辅助瓦斯重力引流用于二次和三次采油的室内研究

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Heavy oil in Middle East fractured carbonate reservoirs account for 25-30% of the total oil in place in the region.Production of heavy oil from such reservoirs is thought to play an important role in the future of the ever-growing world's energy consumption.Besides,having very active water drives,some of these reservoirs are already depleted resulted in high residual oil in place.To enhance the oil recovery efficiency,the mechanism of thermally-assisted gas-oil gravity drainage for secondary and tertiary oil recovery was investigated on a fractured laboratory model.Very high recovery efficiencies were achieved due to oil viscosity reduction as well as gravity stability of the gas-oil contact in both oil-wet and water-wet fractured porous media.It was also noted that a combination of waterflooding and thermal recovery is very effective to enhance heavy oil recovery from fractured water-wet and oil-wet models.
机译：中东裂缝性碳酸盐岩油藏中的重油占该地区现有石油总量的25％至30％，人们认为从此类油藏中开采重油在世界不断增长的能源消费的未来中将发挥重要作用。此外，由于水驱非常活跃，其中一些油层已经枯竭，剩余油就位。为了提高采油效率，研究了热辅助瓦斯重力引流的二次和三次采油机理。在油湿和水湿压裂的多孔介质中，由于油粘度降低以及气油接触的重力稳定性，获得了很高的采收率。热采对于提高裂缝水湿模型和油湿模型的重油采收率非常有效。

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