Polyacrylamide modified geopolymer cement slurry: A potential barrier for channel behind casing

•Water shutoff control and optimizing oil production.•Utilization of industrial waste (fly ash)•Improved compressive strength.•Prolonged hydration. The present work is based on development of novel cement for water shut off through the application of Super Absorbent Polymer (Polyacrylamide) and Geop...

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Bibliographic Details
Published in:Materials today : proceedings 2021, Vol.47, p.6789-6794
Main Authors: Richhariya, Gaurav, Dora, Dau Tapas, Singhal, Naveen, Ghoshal, Tarumay, Pandey, Rohit, lal, Kishori
Format: Article
Language:English
Subjects:
Flyash
Geopolymer
Oilwell cementing
Water shutoff
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Summary:•Water shutoff control and optimizing oil production.•Utilization of industrial waste (fly ash)•Improved compressive strength.•Prolonged hydration. The present work is based on development of novel cement for water shut off through the application of Super Absorbent Polymer (Polyacrylamide) and Geopolymer (Fly ash). The hydration of Fly ash and polyacrylamide leads to plugging of channels in the cement sheath. The plugging characteristics of PAA was studied in saline water and distilled water. Further, decrease in contact angle with time complements the hydration of cement. The SEM analysis suggest the homogeneous dispersion FA and PAA in the cement sheath imparting the cement integrity. Cement slurry with 30% FA and 1% PAA demonstrates excellent compressive strength along with slurry displacement characteristics.
ISSN:2214-7853
2214-7853
DOI:10.1016/j.matpr.2021.05.132