Abstract: A system includes a reactor configured for catalytic water splitting to produce hydrogen and byproduct solids via contact of water and aluminum in the presence of a catalyst comprising a metal, a metal hydroxide, a metal oxide, or a combination thereof, wherein the reactor comprises one or more inlets whereby water, aluminum, the catalyst, or a combination thereof are introduced to a reaction chamber of the reactor, an outlet for hydrogen, and an outlet for a slurry comprising water, catalyst, and solids comprising aluminum oxide, aluminum hydroxide, or a combination thereof, a solid/liquid separation apparatus configured to separate the solids from the slurry to provide a solids-reduced slurry, and oilfield equipment. The oilfield equipment is operable via the hydrogen as fuel and/or via electricity produced from the hydrogen.

Abstract: Improved methods of completing subterranean producing zones containing unconsolidated sands penetrated by well bores are provided. The methods are basically comprised of placing a sand screen in the zone, isolating the annulus between the sand screen and the well bore in the zone, introducing particulate solids and foam forming pellets or open cell foam pieces with or without particulate solids and foam forming pellets into the annulus between the sand screen and the well bore to thereby form a formation sand screening permeable pack in the annulus. When utilized, the foam forming pellets are activated by heat or other means to form a foam which expands and solidifies in the pack thereby eliminating voids and strengthening the pack.