A Modified Cementing Technique for Preventing Gas Migra-tion During Plugging and Abandonment of High-Pressure Gas Wells - DATA

The data presented in this study are available within the article and in the accompanying supplementary material. The dataset comprises the gas-migration test results, nano-SiO₂ concentration optimization data, thickening-time (consistency) measurements, compressive-strength results, and rheological measurements for all cement formulations evaluated. The proprietary compositions of the guar gum and crosslinker additives are not disclosed owing to a confidentiality agreement with the chemical supplier.