| 摘要 |
Currently most super-heavy oil productions that have entered the high cycling steam injection stage exhibit the extraction index of "five lowering, one increasing." Hence, some blocks have entered the exploring stage of extraction method conversion. However, during the production implementation, it is discovered that extraction method conversion has high cost and low benefit and that the timing for extraction method conversion has not yet come. The alternate steam injection method divides an oil reserve well network into two to three well networks according to certain rules (figure 1 to figure 29), and performs steam injection alternately combined with dynamic adjustment of steam injection parameters. The scaled effect of concentrated injection is achieved, and the problem of continuous heat provision during injection is solved. The cost is effectively conserved, and the declination rate of old wells is reduced. |
