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Use Of SEPPE Bauxite As A Proppant

Views: 79     Author: SEPPE     Publish Time: 2018-06-09      Origin: SEPPE

Sintered bauxite is also used as an oil field proppant. In drilling for oil and natural gas, the reservoir rock is often fractured by pumping fluids into the well under very high pressures. The pressure builds up to very high levels that cause the shale reservoir rock to fracture. When fracturing occurs, water and suspended particles known as "proppants" rush into the fractures and push them open. When the pumps are turned off, the fractures close, trapping the proppant particles in the reservoir. If an adequate number of crush-resistant particles remain in the reservoir, the fractures will be "propped" open, allowing for a flow of oil or natural gas out of the rocks and into the well. This process is known as hydraulic fracturing.

Powdered bauxite can be fused into tiny beads at very high temperatures. These beads have a very high crush resistance, and that makes them suitable as a proppant. They can be produced in almost any size and in a range of specific gravity. The specific gravity of the beads and their size can be matched to the viscosity of the hydraulic fracturing fluid and to the size of fractures that are expected to develop in the rock. Manufactured proppants provide a wide selection of grain size and specific gravity compared to a natural proppant known as frac sand.


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