The present invention refers to a method for the isokinetic sampling of liquids and gases present in streams having many fluid phases, and to an apparatus suitable for achieving it. The method and apparatus have application in particular in the field of oil extraction, wherein, after the extraction of liquid and gaseous hydrocarbons possibly accompanied by water and suspended solids, it is necessary to know the composition of the mixture extracted and also the flow rate of the single phases.

A sample handling system receives a downhole sample. The sample handle system conditions the sample using a separator and filters to allow discharge of unwanted liquids and particulates prior to flowing the sample to one or more analyzers. Separating the moisture and particulates from the sample improves the operation of the components of the sample handling system, for example, by eliminating unwanted condensate or moisture. A coalescing filter, for example, may protect a proportional valve by removing unwanted particulates and liquids from the sample. Additionally, main components of the sample handling system are accessible from a front of a housing to allow for ease of repair and replacement.

A cyclonic filter separator with liquid block capabilities formed to separate liquids in a fluid stream for on-stream and spot sampling of natural gas or the like, particularly pressurized process gas having liquid entrained therein, otherwise referenced as multiphase or wet. The present invention incorporates a liquid block apparatus downstream the cyclonic separator to provide to further prevent liquid passing therethrough. A coalescing filter or the like (shown in cylindrical, cartridge form) may be situated downstream the liquid block to remove entrained liquids from the fluid stream, providing three liquid separation systems in series, ensuring a dry gas sample stream for analysis or the like.

A sampling system for collecting periodic composite and/or non-composite samples of vaporized gas during a transfer process from a vaporizer of a cryogenic hydrocarbon liquid including 1) a direct sample pathway to a gas analyzer for instantaneous, real-time vaporized gas analysis, 2) a speed loop pathway for directly collecting fresh vaporized gas samples for subsequent analysis, and 3) a composite sample pathway including a pressurized sample accumulator for collecting a plurality periodically obtained samples of a select volume during the transfer process to create a composite sample of the vaporized gas.

Downhole tools for isolating and analyzing one or more gases include a gas separation assembly in fluid communication with a gas specific analyzer. The gas separation assembly includes a piston disposed within a housing and a separation volume defined between the piston and the housing. The piston is movable to separate a gas component and a liquid component from a downhole formation fluid within the separation volume. The gas specific analyzer is operable to measure one or more properties of the gas component. In some configurations, the gas specific analyzer is an optical assembly containing a light source, an optical detector, and a gas cell that contains an observation volume. The optical assembly is operable to measure one or more properties of the gas component within the observation volume via the light source and the optical detector.

It is aimed to analyze a gas component of a to-be-analyzed gas with a reduced influence of a liquid component contained in the to-be-analyzed gas. Provided is an analyzing apparatus for analyzing a gas component of an exhaust gas that has passed through a scrubber apparatus and the like. The analyzing apparatus includes a collecting nozzle configured to collect a to-be-analyzed gas, a liquid collecting unit configured to collect a liquid component contained in the to-be-analyzed gas collected by the collecting nozzle and to allow the to-be-analyzed gas to pass therethrough, a liquid discharging unit configured to discharge the liquid component collected by the liquid collecting unit, and an analyzing unit configured to analyze a gas component of the to-be-analyzed gas that has passed through the liquid collecting unit.

An off-gas conditioning system includes a source of off-gas, at least one testing port, in communication with the source of off-gas wherein the testing port is connected to a meter capable of testing at least one metric selected from the group consisting of temperature, pressure, flow rate, and humidity. A first vapor-liquid separator in communication with and downstream of the source of off-gas, a second vapor liquid separator in communication with and downstream of the first vapor liquid separator, wherein at least one of the first or second vapor-liquid separators includes a heat-exchanger for cooling the off-gas, and wherein at least one of said first or second vapor liquid separators includes a particulate filter for removing particulates from the off-gas. at least one testing port, downstream of the second vapor-liquid separator in communication with at least one analyzer for analyzing said off-gas for specific chemical compounds.

A microfluidic device includes a sample inlet for a fluid sample, a degassing chamber having a gas-permeable membrane and defining first and second portions separated by the gas permeable membrane, and a detection chamber. The sample inlet and the detection chamber are fluidly coupled to the first and second portions, respectively of the degassing chamber. The detection chamber is operably coupled to a light source and a detector. Assessing a concentration of chlorine gas in an aqueous sample includes providing an aqueous sample to a microfluidic device, separating gas from the aqueous sample in the microfluidic device, providing the gas to a detector, assessing the absorbance of the gas sample at a known absorption wavelength of chlorine, and based on the assessed absorbance of the gas sample at the known absorption wavelength of chlorine, assessing a concentration of chlorine gas in the aqueous sample.

A system and method calibrate efficiency of a gas extraction system in extracting hydrocarbons from mud flowing in a drilling operation. A background reading of a hydrocarbon is extracted from the mud flowing in the drilling operation with the gas extraction system and is checked for stability. An injection operation injects a known concentration of the hydrocarbon into mud, and a subject reading of the hydrocarbon is obtained with the gas extraction system during the injection operation. A correction factor of the hydrocarbon is determined for the gas extraction system by comparing the subject reading against its corresponding known concentration. Then, at least one operational reading of the hydrocarbon extracted from the mud with the gas extraction system can be corrected using the determined correction factor.

A distillation probe includes a conduit having a central axis. In addition, the distillation probe includes a baffle assembly disposed in the conduit. The baffle assembly includes a plurality of axially-spaced baffles positioned one-above-the-other in a stack within the conduit. Further, the distillation probe includes a first helical cooling coil wrapped around the conduit. Moreover, the distillation probe includes a thermally conductive layer disposed about the conduit and encapsulating the first helical cooling coil. The thermally conductive layer is configured to transfer thermal energy between the first helical cooling coil and the conduit.