An analysis system comprising: a common housing comprising: a flash apparatus configured to partially vaporize a pressurized reservoir fluid by reduction in pressure across a valve to yield a vaporized gas and a reservoir liquid; a first chromatography subsystem comprising a first chromatography column and a first sample loop, the first sample loop fluidically coupled to the flash apparatus and configured to receive the vaporized gas from the flash apparatus; a second chromatography subsystem comprising a second chromatography column and a second sample loop, the second sample loop fluidically coupled to the first sample loop and configured to receive the vaporized gas from the flash apparatus via the first sample loop, wherein the first chromatography column of the first chromatography subsystem and second chromatography column of the second chromatography subsystem are configured to be actuated simultaneously to detect components in the pressurized reservoir fluid; a single data acquisition system coupled to the first chromatography subsystem, the second chromatography subsystem, and the flash apparatus, wherein the single data acquisition system is configured to acquire data related to the composition of pressurized reservoir fluid provided to the flash apparatus; and a microprocessor coupled to the data acquisition system, wherein the microprocessor is operable to assess a gas to oil ratio of pressurized reservoir fluid provided to the flash apparatus based on data acquired by the data acquisition system. a common housing comprising: a flash apparatus configured to partially vaporize a pressurized reservoir fluid by reduction in pressure across a valve to yield a vaporized gas and a reservoir liquid; a first chromatography subsystem comprising a first chromatography column and a first sample loop, the first sample loop fluidically coupled to the flash apparatus and configured to receive the vaporized gas from the flash apparatus; a second chromatography subsystem comprising a second chromatography column and a second sample loop, the second sample loop fluidically coupled to the first sample loop and configured to receive the vaporized gas from the flash apparatus via the first sample loop, wherein the first chromatography column of the first chromatography subsystem and second chromatography column of the second chromatography subsystem are configured to be actuated simultaneously to detect components in the pressurized reservoir fluid; a single data acquisition system coupled to the first chromatography subsystem, the second chromatography subsystem, and the flash apparatus, wherein the single data acquisition system is configured to acquire data related to the composition of pressurized reservoir fluid provided to the flash apparatus; and a microprocessor coupled to the data acquisition system, wherein the microprocessor is operable to assess a gas to oil ratio of pressurized reservoir fluid provided to the flash apparatus based on data acquired by the data acquisition system. a flash apparatus configured to partially vaporize a pressurized reservoir fluid by reduction in pressure across a valve to yield a vaporized gas and a reservoir liquid; a first chromatography subsystem comprising a first chromatography column and a first sample loop, the first sample loop fluidically coupled to the flash apparatus and configured to receive the vaporized gas from the flash apparatus; a second chromatography subsystem comprising a second chromatography column and a second sample loop, the second sample loop fluidically coupled to the first sample loop and configured to receive the vaporized gas from the flash apparatus via the first sample loop, wherein the first chromatography column of the first chromatography subsystem and second chromatography column of the second chromatography subsystem are configured to be actuated simultaneously to detect components in the pressurized reservoir fluid; a single data acquisition system coupled to the first chromatography subsystem, the second chromatography subsystem, and the flash apparatus, wherein the single data acquisition system is configured to acquire data related to the composition of pressurized reservoir fluid provided to the flash apparatus; and a microprocessor coupled to the data acquisition system, wherein the microprocessor is operable to assess a gas to oil ratio of pressurized reservoir fluid provided to the flash apparatus based on data acquired by the data acquisition system.