Abstract: A method for reducing a carbon emissions intensity of a fuel includes producing a first hydrocarbon fluid; capturing a carbon dioxide (CO2) fluid from the first hydrocarbon fluid production; and injecting the captured carbon dioxide into a subterranean zone from one or more wellbores to enhance a production of a second hydrocarbon fluid from the zone, at least one of the first or the second hydrocarbon fluids processable into a hydrocarbon fuel that includes a low carbon intensity fuel based, at least in part, on the captured and injected CO2 fluid.

Abstract: Techniques for reducing a carbon emissions intensity of a fuel includes injecting a carbon dioxide fluid into a first wellbore; producing a hydrocarbon fluid from a second wellbore to a terranean surface; and producing a fuel from the produced hydrocarbon fluid, the fuel including a low-carbon fuel and assigned an emissions credit based on a source of the carbon dioxide fluid.

Abstract: Techniques for reducing a carbon emissions intensity of a fuel includes injecting a carbon dioxide fluid into a first wellbore; producing a hydrocarbon fluid from a second wellbore to a terranean surface; and producing a fuel from the produced hydrocarbon fluid, the fuel including a low-carbon fuel and assigned an emissions credit based on a source of the carbon dioxide fluid.

Abstract: A computerized method of using a data processor having a memory to account for carbon flows and determine a regulatory value for a biofuel includes (i) storing, in memory, a first set of one or more carbon flow values characterizing the production and use of a biofuel, wherein the biofuel is derived from a first fraction of an agricultural biomass comprising sugar cane or soybean, (ii) storing, in memory, a second set of one or more carbon flow values characterizing the sequestration of solid phase biomass carbon, wherein the solid phase biomass carbon is derived from a second fraction of the agricultural biomass and wherein the sequestration mitigates anthropogenic greenhouse gas emission, and (iii) calculating, using the data processor, a regulatory value for the biofuel from the first and second sets of carbon flow values.

Abstract: A computerized method of using a data processor having a memory to account for carbon flows and determine a regulatory value for a biofuel includes (i) storing, in memory, a first set of one or more carbon flow values characterizing the production and use of a biofuel, wherein the biofuel is derived from a first fraction of an agricultural biomass, (ii) storing, in memory, a second set of one or more carbon flow values characterizing the sequestration of solid phase biomass carbon, wherein the solid phase biomass carbon is derived from a second fraction of the agricultural biomass and wherein the sequestration mitigates anthropogenic greenhouse gas emission, and (iii) calculating, using the data processor, a regulatory value for the biofuel from the first and second sets of carbon flow values.

Abstract: Techniques for reducing a carbon emissions intensity of a fuel includes injecting a carbon dioxide fluid into a first wellbore; producing a hydrocarbon fluid from a second wellbore to a terranean surface; and producing a fuel from the produced hydrocarbon fluid, the fuel including a low-carbon fuel and assigned an emissions credit based on a source of the carbon dioxide fluid.