稠油热采水平井温度测试及注汽剖面分析

水平井配汽是解决非均质稠油水平井注汽中各段动用不均现象的常用办法,但缺乏有效的监控分析手段。采用连续钢铠电缆测温技术进行稠油水平井吸汽剖面测试分析。通过建立稠油水平井段蒸汽流动与换热数理模型,利用Fluent软件模拟湿蒸汽在水平井段分流的过程,得到湿蒸汽流经筛管分流时温度、压力出现陡降的变化规律。结果表明:蒸汽在水平段流经筛管分流进入地层时,流体温度、压力下降幅度与筛管分流量呈正比关系;实现了将在线测试温度作为吸汽剖面的评价分析因素,增加了解释模型的准确性。

Temperature test and injection profile analysis in heavy oil thermal recovery horizontal well

Steam distribution of horizontal wells is a common method to solve the uneven use of each section, caused by the general steam injection of heterogeneous heavy oil, but it lacks the effective monitoring and analysis means. With the temperature measurement technology of continuous steel armored cables, the steam injection profile test of horizontal wells is performed in this paper. By building a steam flowing and heat transfer mathematical model of horizontal wells, the laws of steam floating in the sieve tube were given where the temperature and pressure of wet steam will drop when going through the sieve tube, by the simulation in use of the Fluent software. The results show that the fluid temperature and the falling amplitude of pressure are proportional to the fluid volume in the sieve tube, when the steam flows in the horizontal sieve and goes underground. The online temperature measurement is adopted as an assessment factor in analyzing the steam injection profile, which makes the model more accurate.