不同注汽方式和蒸汽质量对采收率的影响

Indri Kusumastuti, T. Erfando, F. Hidayat
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引用次数: 8

摘要

蒸汽驱的主要原理是利用注入储层的热蒸汽来降低油的粘度。在现场实施中,有几种注入模式可以应用于蒸汽驱。研究了几种注汽方式和汽质对采收率的影响。由此可知,为获得最佳采收率,注汽方式和汽质是正确的。对5点注射、倒5点注射、7点注射、倒7点注射、9点注射、倒9点注射进行了分析。所使用的蒸汽质量的变化为50%,70%和90%。仿真模型为CMG STARS上网格块尺寸为5x5x5的三维直角坐标系。该蒸汽驱方案的参数为温度450°F,注入压力500 psi,注入量1000桶/天。在所有测试方案中,最佳结果为蒸汽质量为0.9的倒7点模式,采收率为35.1%,累计总产量为269397桶。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effects of Various Steam Flooding Injection Patterns and Steam Quality to Recovery Factor
The main principle of steam flooding is to reduce the oil viscosity using hot steam that is injected into the reservoir. In the field implementation there are several injection patterns that can be applied for steam flooding. This research aims to determine the effect of several injection patterns and steam quality on oil recovery factor. Therefore, it can be known the injection pattern and steam quality are right to obtain the best recovery factor. Analysis was carried out on injection patterns including five-spots, inverted five-spots, seven-spots, inverted seven-spots, nine-spots, and inverted nine-spots. The variations in the steam quality used are 50%, 70% and 90%. The simulation model a 3-dimensional cartesian with grid block size 5x5x5 on CMG STARS. The parameters in this steam flooding scenario are temperature at 450° F, injection pressure of 500 psi, and injection rate of 1000 bbl /day. Of all the scenarios tested the best results were in the inverted seven spot pattern with steam quality 0.9, where recovery factor was 35,1% and total cumulative production was 269397 bbl.
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