The present invention relates to methods useful for isolating a portion of a wellbore. In one embodiment, a method includes preparing a sealant composition containing a set modifier component. The sealant composition is placed into the wellbore and is subjected to ionizing radiation that alters the set modifier component, triggering the thickening of the sealant composition.
Radiation-Induced Triggering for Set-On-Command Compositions and Methods of Use
Lewis, SJ., Davis, J., Lamvik, M., Badalamenti, A., Myers, D., Gupta, V., ... Rao, V. (2012). IPC No. U.S. Radiation-Induced Triggering for Set-On-Command Compositions and Methods of Use. (U.S. Patent No. 8245783).