Abstract

Summary This paper discusses the technique of using high-molecular-weight organic polymers to stabilize troublesome shales through the adsorption of a protective polymer layer. It specifically covers the performance of a partially hydrolyzed Polyacrylamide (PHPA) in respect to shale preservation and in the retardation of cuttings dispersion. Other design factors—e.g., pH control, rheological stability, and lubricity—are also covered.

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