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US 12,552,729 B2Granted
Mechanically-gassed emulsion explosives and methods related thereto
AssigneeDyno Nobel Inc.
InventorsJohn B. Halander, Casey L. Nelson, Cornelis L. Kome
Life of this patent
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Abstract
Emulsion explosives with gas bubbles that are resistant to in-borehole migration or coalescence are disclosed herein. Such emulsions can be sensitized by mechanically-introducing gas bubbles into the emulsion. Resistance to gas bubble migration and coalescence can be achieved by homogenization, without the need for bubble stabilization agents.
Claims18
A method of delivering an emulsion explosive, the method comprising:
- splitting an oxidizer salt solution into a first portion and a second portion;
- mixing the first portion of the oxidizer salt solution with a fuel and a pressurized gas to form a low viscosity fuel-rich emulsion explosive, wherein the fuel is substantially devoid of a bubble stabilizing agent;
- mixing the second portion of the oxidizer salt solution into the fuel-rich emulsion explosive to form a more-balanced emulsion explosive with increased viscosity by about 6,000 cP to about 20,000 cP relative to the fuel-rich emulsion explosive;
- and
- homogenizing the more-balanced emulsion explosive to form a homogenized emulsion explosive with further increased viscosity relative to the more-balanced emulsion explosive.
2 more elements
A method of delivering an emulsion explosive, the method comprising:
- splitting an oxidizer salt solution into a first portion and a second portion;
- mixing the first portion of the oxidizer salt solution with a fuel to form a low viscosity fuel-rich emulsion matrix, wherein the fuel is substantially devoid of a bubble stabilizing agent;
- mechanically introducing gas bubbles into the preliminary emulsion matrix to sensitize the fuel-rich emulsion matrix and form a fuel-rich emulsion explosive;
- mixing the second portion of the oxidizer salt solution into the fuel-rich emulsion explosive to form a more-balanced emulsion explosive with increased viscosity;
- and
- homogenizing the more-balanced emulsion explosive to form a homogenized emulsion explosive with further increased viscosity.
3 more elements
Dependencies are inferred from the claim text.