The invention provides a sample container arrangement for collecting multiphase samples of gas and liquid, particularly oil in water samples that are representative with respect to oil concentration, oil droplet size and oil droplet size distribution, the sample container arrangement comprises a sample container with an upper end, a lower end and a container volume for sample collection, such as a standing cylinder, distinctive in that the container arrangement further comprises: one inlet connected to the upper end or part of the container volume, one outlet with a valve with bleeding function, connected to the upper end or part of the container volume, and one outlet connected to the lower end of the container volume.

A sampling device including a body (101) having a sampling chamber (102) adapted to receive a liquid (103) to be sampled. An inlet (104) on the body (101) allows liquid (103) to flow into the sampling chamber (102). A sampling port (105) on the body is adapted to receive a sampling pot or sample receiving container (106) for collecting liquid (103) from the sampling chamber (102) wherein the sampling port includes a safety shield (107) slidaby mounted to the inside (108) of the sampling port, the safety shield slidable between a blocking position in which access to the sampling chamber is restricted and an accessible position in which access to the sampling chamber is allowed.

A sampling container assembly includes a sample receiving residue tube, a residue tube cap, inner and outer pipes, a container cap, a fixture block, and a supply conduit. The residue tube cap is assembled with the residue tube and defines inlet and outlet ports. The inner pipe has a lower end sealingly mounted to the fixture block and surrounding the residue tube to define an inner cavity for receiving a heat transfer fluid. The outer pipe has a lower end sealingly mounted to the fixture block and surrounding the inner pipe to define an outer annulus, with the container cap sealingly assembled with an upper end of the outer pipe. The supply conduit extends through the fixture block and the outer annulus and is connected with the inlet port of the residue tube cap for providing a sample fluid to the residue tube. The fixture block defines a passage extending to the outer annulus for supplying a chilling fluid to the outer annulus for chilling the heat transfer fluid in the inner cavity.

A servo-electric actuated sampler can draw samples of fuel liquid from an operating main line. The sampler can run in a fast-loop process whereby liquid is drawn into the sampling system and past an actuated sampler and then out of the system back into main. The system main run a short loop whereby the main fast-flow is restricted, and the actuator and sampler are isolated from the main line flow. When isolated, the sampler discharges liquid into sampling cans. The servo-electric actuator requires a monitored amount of power to draw and discharge fluids. Monitoring of the power requirements of the servo-electric sampler can reveal the status and reliability of the system.

Tamper-resistant and tamper-evident sample bottles for the transport of pressurized well fluid include sensor packages and data recording devices to characterize and track properties of the sample bottle and its contents.

A low-pressure cryogenic fluid sampling system includes a cryogenic sample handle assembly; a transfer and vaporization tubular loop; and a sample vessel. The sample handle assembly connects to a cryogenic storage vessel containing a cryogenic fluid. The tubular loop connects to the cryogenic sample handle assembly. The sample vessel removably connects to the transfer and vaporization tubular loop and accommodates a gaseous sample having a pressure lower than about 200 kPa. A method of collecting a gaseous sample with the sampling system includes purging the sample vessel; actuating the handle to purge and refrigerate the tubular loop; extracting a volume of a cryogenic fluid from the storage vessel into the loop to vaporize the cryogenic fluid and produce a gaseous sample; and transferring the sample from the tubular loop into the sample vessel. The sampling system is safer, maintains stoichiometric quantities in the cryogenic liquid, and reduces cross contamination.

A hydrogen sulfide sampler system for sampling for hydrogen sulfide in a fluid flow line includes a main tank in fluid communication with a fluid sample inlet line and a fluid sample outlet line. A plurality of sample bottles are in fluid communication with the main tank by way of the fluid sample outlet line. A drain tank is in fluid communication with the main tank by way of the fluid sample outlet line. A manifold assembly includes the fluid sample outlet line, the manifold assembly located between the main tank and the drain tank and further located between the main tank and the plurality of sample bottles. A return line is in fluid communication with the drain tank. An analysis system is operable to analyze a composition of a sample fluid contained within the main tank.

The invention discloses a spatial and temporal feature-based method for measuring domestic wastewater effluent loadings, comprising the following steps: establish a model for measuring regional domestic wastewater effluent loadings; calculate regional population distribution raster data; obtain per capita effluent loading coefficients with spatial and temporal differences; calculate regional domestic wastewater effluent loadings; and compare and analyze the temporal fluctuation features and spatial variation features of regional domestic wastewater effluent loadings and identify “hotspot” periods and areas of effluent loadings. Compared with the prior art, the method for measuring domestic wastewater effluent loadings provided by the present invention is flexible, convenient and highly universal, which can significantly raise the temporal-spatial resolution of the pattern of regional domestic wastewater effluent loadings. The data needed are also publicly available. This invention can help identify key pollution areas and periods and lay a methodological foundation for precision pollution control.

A portable, hydrocarbon well test unit for use with high temperature and high-pressure hydrocarbon wellbore flow includes a two-phase separator unit having a hydrocarbon inlet, a vapor outlet and a liquid outlet. A static mixer is in fluid communication with the liquid outlet. A liquid sampler positioned downstream of the static mixer ensures that liquid and gas are mixed to accurately represent a sample of the wellbore hydrocarbon flow. The sampler can be actuated to extract a sample of the mixed fluid. The sampler directs samples to a multi-position valve having a plurality of valve outlets, each outlet being in fluid communication with one of a plurality of sample bottles. A controller actuates the multi-position valve to direct a sample into a particular sample bottle, thereby allowing different types of samples to be taken over different time periods without the need for intervention for extended periods of time.

A residue tube assembly includes a residue tube having an open upper end and a cap assembly including a cap sealingly secured with the open upper end and an adjustable member assembled with the cap and defining an outlet passage extending into the residue tube to define a fill limit of the residue tube, and an overflow passage extending radially outward and downward of the open upper end of the residue tube. The adjustable member is vertically adjustable in the cap to adjust the fill limit of the residue tube.