Fracture stimulation treatments using ultra-lightweight proppants and slick brine perform. Since hydraulic fracturing became a standard oilfield stimulation technique in the late 1940s, the industry has been working to improve the technique with new methods, technologies and materials. By the mid-1950s, "everyone" knew that a proppant pack's flow capacity increased with fracture width, e.g., increasing numbers of proppant layers.
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