陆相砂岩油藏合理注水速率实验研究

Manping Yang, Lu Jiang, Shuxiang Guo, Liming Zheng, L. Meng
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摘要

目的:设计并制作了水驱实验模型,并进行了高渗模型和低渗模型实验。方法:分析两种渗透率下注入速率、注入孔隙体积倍数与驱油效率、注入速率、注入孔隙体积倍数与含水率的关系。结果:驱油效率与注水速度之间存在一定的关系。有合理的注水速度,可以达到最高的驱油效率。渗透率越低,合理的注入速度越低。在注水速率的合理范围内,注水速率逐渐增大,可获得最佳驱油效果。结论:通过分析得出,即使在相同渗透率实验模型下,不同注水速度下的人工岩石驱油效率也是不同的。研究表明,在开发中后期采用强注强采的方法可以提高油藏的水驱采收率。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Experimental Study on Rational Water Injection Rate in Continental Sandstone Reservoirs
Objective: In this paper, an experimental model of water flooding was designed and manufactured, and experiments on high permeability and low permeability models were carried out. Methods: The relationship between injection rate, injection pore volume multiple and oil displacement efficiency, injection rate, injection pore volume multiple and water content in two kinds of permeability was analyzed. Results: There is a certain relationship between oil displacement efficiency and water injection speed. There is a reasonable water injection speed, which can achieve the highest oil displacement efficiency. The lower the permeability the lower will be the reasonable injection rate . In the reasonable range of water injection rate, the injection rate increases gradually, and the best oil displacement effect can be obtained. Conclusion: Through analysis, it was concluded that the oil displacement efficiency of artificial rocks with various water injection rates was different even in the same permeability experimental model. It was indicated that the water flooding recovery of the reservoir can be improved by using the method of strong injection and strong production in the middle and later stage of development.
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