Water shutoff using an inflatable composite sleeve polymerized in-situ: A case history on forties delta

A new technology based on using in-situ polymerization of composites has be en developed and has been used to shut off water-producing perforations for the first time on Forties Delta. By exploiting the deformability of an unp olymerized flexible composite and the excellent mechanical characteristics of a polymerized composite, it was possible to run an expandable patch-thro ugh tubing and set in the liner below. The principles of running the compos ite patch on electric wireline and the specialized surface and downhole too ls are described, along with the setting procedures and events offshore. Results of this operation have shown an inflatable composite sleeve can be used as an efficient and cost-effective solution for reducing unwanted wate r production.