The method of claim 12, wherein the first composition gas stream has a CO 2 content that is greater than 10 mole percent.ġ4. The method of claim 3, wherein the gas stream has a CO 2 content that is greater than 10 mole percent.ġ3. The method of claim 10, wherein the first composition gas stream is greater than 25 mole percent methane.ġ2. The method of claim 9, wherein the first composition gas stream is greater than 15 mole percent methane.ġ1. The method of claim 3, wherein the at least one inert gas comprises CO 2.ġ0. The method of claim 3, wherein the gas stream is treated to remove at least a portion of the sulfur containing compounds present in the gas stream so that the gas stream has less than 5 mole percent of sulfur containing compounds.ĩ. The method of claim 6, wherein the first composition gas stream has a lower heating value less than 700 BTU/SCF.Ĩ. The method of claim 3, wherein the first composition gas stream and the second composition gas stream both have a lower heating value greater than 200 BTU/SCF.ħ.
The method of claim 3, wherein both the first composition gas stream and the second composition gas stream comprise combustible gases.Ħ. The method of claim 3, wherein the first composition gas stream and the second composition gas stream both contain a hydrocarbon fluid.ĥ. The method of claim 1, wherein the organic-rich rock formation is an oil shale formation.Ĥ. The method of claim 1, wherein the formation hydrocarbons in the organic-rich rock formation comprise heavy hydrocarbons.ģ. A method for utilizing gas produced from an in situ conversion process, comprising: a) heating an organic-rich rock formation in situ b) producing a production fluid from the organic-rich rock formation, the production fluid having been at least partially generated as a result of pyrolysis of formation hydrocarbons located in the organic-rich rock formation, the production fluid comprising hydrocarbon fluids c) obtaining a gas stream from the production fluid, the gas stream comprising a combustible hydrocarbon fluid d) separating the gas stream into a first composition gas stream and a second composition gas stream, wherein the composition of the first composition gas stream is maintained in a substantially constant condition, the first composition gas stream comprises methane and at least one inert gas and the first composition gas stream has a lower heating value less than 800 BTU/SCF and e) passing the first composition gas stream through a first gas turbine to form a first gas turbine exhaust stream, the first gas turbine being configured to provide energy to a first electrical generator.Ģ.
The method may include separating the gas stream into a first composition gas stream and a second composition gas stream, where the composition of the first composition gas stream is a low BTU gas stream maintained in a substantially constant condition and passing the first composition gas stream through a first gas turbine to form a first gas turbine exhaust stream, where the first gas turbine being configured to provide energy to a first electrical generator.ġ. The method may include obtaining a gas stream from the production fluid, where the gas stream comprises combustible hydrocarbon fluids. The method may further include producing a production fluid from the organic-rich rock formation where the production fluid having been at least partially generated as a result of pyrolysis of formation hydrocarbons, for example oil shale, located in the organic-rich rock formation. The method may include heating an organic-rich rock formation, for example an oil shale formation, in situ. A method for utilizing gas produced from an in situ conversion process is provided.
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