Учебные издания

The methodology considers a set of laboratory procedures for verifying the rheological and filtration characteristics of polyacrylamide used in tertiary enhanced oil recovery at fields with hard-to-recover reserves. The purpose of this work is to develop a scientifically grounded incoming quality-control protocol that integrates physicochemical identification of the reagent, standardized preparation of model formation waters, and rheological analysis at reservoir-relevant shear rates. The novelty of the methodology lies in tightening the filtration criterion (1.2 µm membranes, FR ≤ 1.2), strict regulation of the brine ionic composition, and coupling filtration tests with rheological parameters. It is demonstrated that the proposed approach establishes a reliable barrier against off-spec PAM batches, reduces the risks of near-wellbore plugging and injection pressure escalation, and enhances the technological and economic performance of polymer flooding. The methodology will be constructive for laboratories of oil and gas companies, service companies, engineering centers, and specialists involved in the design and monitoring of chemical EOR projects.