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US 11,713,411 B2Granted
Oxidizing gasses for carbon dioxide-based fracturing fluids
AssigneeSaudi Arabian Oil Company
InventorsDesmond Schipper, Katherine Leigh Hull, Rajesh Kumar Saini, Younane N. Abousleiman
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Abstract
Unconventional hydrocarbon source rock reservoirs can contain the organic material kerogen, intertwined with the rock matrix. The kerogen can alter the tensile strength of the rock and contribute to higher fracture energy needs. To degrade kerogen and other organic materials, oxidizing gasses are dissolved in carbon dioxide (CO2) which is then used as part of a fracturing fluid. The oxidizing gasses can be dissolved directly in the CO2 or generated in situ using precursors.
Claims10
A method for treating kerogen in a subterranean zone, the method comprising:
- placing a composition in the subterranean zone, the composition comprising carbon dioxide, and
- an oxidizing gas, wherein the oxidizing gas is bromine gas (Br2), and treating the kerogen in the subterranean zone with the composition.
Dependencies are inferred from the claim text.