Abstract: The present disclosure relates to methods of plugging a wellbore or formation in a subterranean environment, and systems for the practice thereof. Benefits of the methods disclosed herein can include providing the use of versatile aqueous polymer solutions that can penetrate into wellbores and deep into subterranean formations, while forming strong sealant materials effective at formation temperatures and pressures, and at various distances from a wellbore in a formation.
Abstract: The present invention provides a methodology and compositions for re-fracturing a wellbore. By differentiating existing perforations that have been fractured from those that are not, applying a sealing composition to seal off the identified, fractured perforations, and performing re-fracturing to perforations that are not sealed, a wellbore can be re-fractured effectively and efficiently. The present invention for re-fracturing a wellbore has broad applications in the field of hydraulic fracturing.
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