| 摘要 |
A zonal isolation system for a subterranean well comprises at least one tubular body that comprises at least one semi-permeable membrane, or at least one removable material or both. The semi-permeable membrane is permeable to one or more activators that may cause a cement slurry to begin setting. The tubular body may comprise openings that are covered by or filled with a removable material. After a primary cementing treatment has been completed, the activator may be introduced into the tubular body, whereupon it passes through the tubular body and out into the cement slurry. |
