Working fluids
AssigneeBaker Hughes, A Ge Company, LLC
InventorsSoma Chakraborty, Michael H. Johnson
Life of this patent
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Abstract
A method of recovering a hydrocarbon material from a subterranean formation comprises forming a working fluid comprising substantially solid particles and an at least partially gaseous base material, the substantially solid particles exhibiting a greater heat capacity than the at least partially gaseous base material. The working fluid is introduced into a subterranean formation containing a hydrocarbon material to heat and remove the hydrocarbon material from the subterranean formation. An additional method of recovering a hydrocarbon material from a subterranean formation, and a working fluid are also described.
Claims20
A working fluid, comprising:
- carbon dioxide gas;
- and
- substantially solid particles dispersed and stabilized within the carbon dioxide gas, the substantially solid particles each formulated to remain substantially solid up to a temperature of at least about 350° C. and each independently having a heat capacity of greater than or equal to about 0.1 kJ/kg-K.
A working fluid, comprising:
- carbon dioxide gas, and
- discrete, composite nanoparticles having a heat capacity of greater than or equal to about 0.1 kJ/kg-K and thermal conductivity of greater than or equal to about 50 W/m-K dispersed and stabilized within the carbon dioxide gas, the discrete, composite nanoparticles each individually comprising:
- a core comprising a first material;
- and
- a shell comprising a second, different material completely encapsulating the core.
A working fluid, comprising:
- carbon dioxide gas;
- and
- organophilic, solid nanoparticles within the carbon dioxide gas, the organophilic, solid nanoparticles each having a heat capacity of greater than or equal to about 0.1 kJ/kg-K and each formulated to remain stably dispersed in the carbon dioxide gas within a temperature range of from about 100° C. to about 350° C.
Dependencies are inferred from the claim text.