A subsurface safety valve for controlling fluid flow in a wellbore including a monitoring sub having a hydraulic connection port and defining a piston bore. The monitoring sub defining a hydraulic circuit extending between the hydraulic connection port and the piston bore. The monitoring sub comprising a sensing assembly incorporated in the hydraulic circuit that is operable to measure a degradation level of fluid in the hydraulic circuit. A flapper sub attached to the monitoring sub. A piston disposed in the piston bore of the monitoring sub. A flow tube positioned between the monitoring sub and the flapper attached to a downhole end of the monitoring sub and in contact with the flapper, the flow tube having a protrusion in contact with the piston. A return spring positioned in a cavity defined between the flow tube and the flapper sub, biasing the flow tube towards the monitoring sub.

The present application is directed to a sampling system for sampling a fluid from a vessel, where the sampling system includes a sterile dispenser assembly operatively connected to the vessel, the sterile dispenser assembly including a valve operatively connected to the vessel, a membrane, and a needle, and a detachable sterile sampling container assembly operatively connected to the sterile dispenser assembly, the detachable sterile sampling container assembly including a sampling container, a membrane attached to the sampling container, and a sampling container housing enclosing the sampling container, where the sampling container housing includes a compressible portion having a deflated configuration and an expanded configuration.

The present disclosure relates to a computer-implemented method for analyzing a product stream of a chemical reaction. The method includes withdrawing a portion of the product stream of the chemical reaction from a reactor, the portion of the product stream having a volume of less than about 200 μL. The method further includes mixing the portion of the product stream with a diluent to produce a sample and then transferring the sample to a liquid chromatography device. A measured chemical profile is then developed, via the liquid chromatography device, which can be used for process monitoring or real time decision making. In some embodiments, the method can include adjusting a reaction condition in the reactor based on differences between the measured chemical profile and a desired chemical profile.

A chiller water sampling device includes a pair of flow meters and a proportional valve to provide a constant flow rate of sample water containing peroxyacetic acid from a chiller to a mixing tank. Acid can be added to reduce the pH of sample water in the mixing tank to bring the pH within the operating range of a peroxyacetic acid sensor. The sensed level of peroxyacetic acid can be used to control further addition of peroxyacetic acid to the chiller.

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.

A subsurface safety valve for controlling fluid flow in a wellbore including a monitoring sub having a hydraulic connection port and defining a piston bore. The monitoring sub defining a hydraulic circuit extending between the hydraulic connection port and the piston bore. The monitoring sub comprising a sensing assembly incorporated in the hydraulic circuit that is operable to measure a degradation level of fluid in the hydraulic circuit. A flapper sub attached to the monitoring sub. A piston disposed in the piston bore of the monitoring sub. A flow tube positioned between the monitoring sub and the flapper attached to a downhole end of the monitoring sub and in contact with the flapper, the flow tube having a protrusion in contact with the piston. A return spring positioned in a cavity defined between the flow tube and the flapper sub, biasing the flow tube towards the monitoring sub.

A sampling module is for mounting in a pipeline with a multiphase flow meter and for receiving multiphase fluid from the pipeline. The sampling module includes: a separation chamber for receiving and separating a sample volume of fluid from the multiphase fluid, the separation chamber having a vertical extent when in use; a lower valve for opening and closing a lower fluid path between a lower end of the separation chamber and the pipeline; an upper valve for opening and closing an upper fluid path between an upper end of the separation chamber and the pipeline; a lower sensor for measuring fluid properties of the fluid in a lower part of the separation chamber; and an upper sensor for measuring fluid properties of the fluid in an upper part of the separation chamber.

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 sampling system includes a sensor (for example, a biosensor) that is provided in a sampling channel so as to be in contact with a sample and measures concentrations of predetermined components in the sample, an introduction path that introduces a cleaning liquid to an upstream side of the sensor of the sampling channel, and an air introduction path that is connected to the introduction path and is opened to the atmosphere. The air guided from the air introduction path flows into the sampling channel via the introduction path.