Abstract: A method for utilizing gas produced from an in situ conversion process includes heating an organic-rich rock formation, for example an oil shale formation. The method may include producing a production fluid from the organic-rich rock formation where the production fluid has been at least partially generated as a result of pyrolysis of formation hydrocarbons located in the organic-rich rock formation. The method may include obtaining a gas stream from the production fluid, where the gas stream comprises combustible hydrocarbon fluids. 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 gas turbine to form a gas turbine exhaust stream, where the gas turbine is connected to an electrical generator.

Abstract: The present invention relates to methods and systems for controlling a combustion reaction and the products thereof. One embodiment includes a combustion control system having an oxygenation stream substantially comprising oxygen and CO2 and having an oxygen to CO2 ratio, then mixing the oxygenation stream with a combustion fuel stream and combusting in a combustor to generate a combustion products stream having a temperature and a composition detected by a temperature sensor and an oxygen analyzer, respectively, the data from which are used to control the flow and composition of the oxygenation and combustion fuel streams. The system may also include a gas turbine with an expander and having a load and a load controller in a feedback arrangement.

Abstract: Methods and systems for low emission power generation in hydrocarbon recovery processes are provided. One system includes integrated pressure maintenance and miscible flood systems with low emission power generation. An alternative system provides for low emission power generation, carbon sequestration, enhanced oil recovery (EOR), or carbon dioxide sales using a hot gas expander and external combustor. Another alternative system provides for low emission power generation using a gas power turbine to compress air in the inlet compressor and generate power using hot carbon dioxide laden gas in the expander. Other efficiencies may be gained by incorporating heat cross-exchange, a desalination plant, co-generation, and other features.

Abstract: A method for utilizing gas produced from an in situ conversion process is provided. The method may include heating an organic-rich rock formation, for example an oil shale formation, in situ. 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 obtaining a gas stream from the production fluid, where the gas stream comprises combustible hydrocarbon fluids.