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Advanced Degradable Alloys for Multi-Stage Fracturing Applications

New aluminum alloys with unique mechanical and electrochemical properties have been developed in response to a strong demand for new technologies tailored to the expanding hydrocarbon multi-stage fracturing market. The novel alloys disclosed in this paper purposely possess an augmented degradability in water-based oilfield fluids, an unusually high hardness and high compressive strength following proper processing while withstanding thermal aging in wellbore environments. In highlighting major findings from years of research in developing new alloys, this paper overviews major characteristics of these novel alloys from microstructural development, processing, mechanical properties, and electrochemical response in oilfield fluids such as salinated water (brine), acids, and cross-linked fracturing fluids.