A system and a process for detecting early stage electrical components problems with an analysis system is disclosed. The system process includes determining an oil quality of the oil of an electrical component using the analysis system. The system the process further including determining dissolved gases in the oil of the electrical component using the analysis system, processing and analyzing the oil quality and the dissolved gases using the analysis system, and determining whether there are problems in the electrical component using the analysis system.

Certain embodiments of the disclosure relate to a bi-directional oil-flow adapter that is attachable to a valve-controlled port of a transformer housing in which oil is contained for cooling parts of the transformer such as a primary coil and a secondary coil. The bi-directional oil-flow adapter not only allows for an oil sample to be drawn out of the transformer housing via the valve-controlled port but also allows for the oil sample to be used (along with an additional volume of oil if so desired) for flushing the valve-controlled port in order to ensure that a subsequent oil sample is different than a current oil sample. The oil sample can be provided to a dissolved gas analyzer for detecting and analyzing one or more gases that may be present in the oil sample, the one more gases indicative of a level of contamination of the oil sample.

A device and associated method can detect hydrocarbon gas with at least a control module having a plurality of different gas detection means housed in a mobile enclosure, the control module configured to activate at least two different gas detection means to provide amounts and types of gases present in a fluid.

Systems and methods for selectively extracting hydrogen gas dissolved in oil are provided. In one embodiment, a system includes a selectively permeable membrane provided at a point of contact between oil and a sensor chamber. The selectively permeable membrane has a hydrogen specificity and a thickness selected to minimize detection of further gasses dissolved in the oil by a hydrogen gas sensor cross-sensitive to the further gasses. The selectively permeable membrane can include polyimide. The further gasses include carbon monoxide, acetylene, and ethylene. The system can include a further membrane and a porous metal disc. The porous metal disc is bound to the selectively permeable membrane by using the further membrane as an adhesive layer and by applying pressure and temperature. The porous metal disc supports the selectively permeable membrane and the further membrane against pressure of the oil when exposed to a vacuum. The further membrane includes fluorohydrocarbons.

Provided is a trace gas measurement apparatus for electrical equipment that includes at least one sample cell configured to collect an oil sample from the electrical equipment. The sample cell having an oil receiving portion for receiving an oil sample, at least one perforated or porous sheet within a head space thereof for receiving the oil sample from the oil receiving portion, housing the oil sample thereon, and separating a new oil sample received from an existing oil sample within the at least one sample cell. The trace gas measurement apparatus also includes an oil pump for selectively pumping oil into and out of the sample cell, and a control module controlling operation of the oil pump, to adjust an oil level and air pressure within the sample cell, for performing an extraction process of trace gases within the oil sample.

A method for using adaptive alarm thresholds for rate of change in dissolved gas concentrations for power transformer fault detection may include receiving first dissolved gas data of a power transformer; determining a first rate of change (ROC) of a first gas concentration of the first dissolved gas data; generating, based on the first ROC, a first adaptive alarm threshold for ROC with which to detect a fault in the power transformer; receiving second dissolved gas data of the power transformer; determining a second ROC of a second gas concentration of the second dissolved gas data; comparing the second gas concentration to a static gas concentration threshold; comparing, based on the comparison of the second gas concentration to the static gas concentration threshold, the second ROC to the first adaptive alarm threshold for ROC; detecting the fault based the comparisons; and generating an alert indicative of the fault.

Provided is a downhole tool and a well system. The downhole tool, in one aspect, includes a tubular providing one or more production fluid flow paths for a production fluid. The downhole tool, according to this aspect, further includes one or more float chambers located within the tubular, and two or more floats located within the one or more float chambers. In one aspect, a first of the two or more floats has a first density (.sub.1) between a density of gas (.sub.g) and a density of oil (.sub.o), and a second of the two or more floats has a second density (.sub.2) between the density of oil (.sub.o) and a density of water (.sub.w). The downhole tool, according to this aspect, further includes two or more non-contact proximity sensors configured to sense a radial location of the two or more floats to determine a gas:oil ratio and oil:water ratio.

A system for analyzing a multiphase production fluid, the system including a pipeline, an inlet divider having a set of analyzing apertures with densitometers and a set of production apertures, a fluidic separation chamber with flowmeters, a pressure control valve, and a fluidic control unit. Each analyzing aperture of the set of analyzing apertures disposed on a vertically-oriented axis of the inlet divider. The pipeline is configured to supply the multiphase production fluid to the inlet divider. The inlet divider is configured to provide an analysis portion of the multiphase production fluid to the set of analyzing apertures. The inlet divider is configured to provide a production portion of the multiphase production fluid to the set of production apertures. The set of analyzing apertures is configured to provide the analysis portion to the fluidic separation chamber.

A liquid treatment method according to an aspect of the present disclosure comprises: starting application of a power between a pair of electrodes to generate plasma, which causes active species to be produced in a liquid; measuring the hydrogen ion concentration in the liquid while the plasma is generated; measuring a time elapsed after the starting the application of the power; and stopping the application of the power when a value calculated by (a) multiplying the hydrogen ion concentration by the elapsed time or (b) integrating the hydrogen ion concentration with respect to the elapsed time is larger than a first threshold.

A system, comprising at least one source for irradiating electromagnetic radiation into a sample fluid and a reference fluid resulting in a change in a temperature of the sample fluid and a change in a temperature of the reference fluid, and a processing subsystem that monitors and determines a concentration of a gas of interest dissolved in the sample fluid based upon a difference between the change in the temperature of the sample fluid and the change in the temperature of the reference fluid, wherein the reference fluid does not contain the gas of interest, and the electromagnetic radiation has a wavelength range corresponding to a spectral absorption range of the gas of interest.