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

Key words:  heavy oil thermal recovery  horizontal well  on-line test  injection profile  fuzzy mathematics

Abstract:

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.