DOI: 9, 2021Proceedings Paper

Aqueous Degradable Polyurethane Elastomers for Oil & Gas Applications

Matthew Peter Burdzy


A new class of patent pending aqueous degradable polyurethane elastomers have been developed that can be used in oil & gas exploration, drilling, completion and production where a degradable part is needed to provide a useful service life then quickly degrade when exposed to heat and water. This polyurethane technology eliminates the need for costly secondary operations such as milling, drilling or removing tools in downhole applications saving time and reducing cost. The degradable polyurethane is a low viscosity two-part heat cured elastomer that is easy to mold using low cost hot cast tooling techniques. The novel liquid polyurethane prepolymer can be formed into films, seals, sealing elements, tools, complex geometries or other aqueous degradable elastomeric components. The polymer is a tough tear resistant high strength elastomer with a tensile strength exceeding 5000 psi, elongation over 500%, and a 70% compression modulus greater than 13,000 psi. When integrated as a sealing element in a degradable hydraulic fracturing plug, the polyurethane is designed to be pumped down-hole, set and seal then degrade once the operation is complete. Once placed into service, the useful operating lifetime of this polyurethane chemist...Continue Reading

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