Disclosed is a fuel system with a fuel tank containing hydrocarbon fuel, a hydrocarbon fuel flow path in fluid communication with the fuel tank, and a gas separation pump disposed on the flow path. The gas separation pump has a pump housing with an inner wall defining a cylindrical internal cavity. The pump housing includes an inlet at a first axial position along the cylindrical cavity outer circumference, an outlet at a second axial position along the cylindrical cavity outer circumference, and a vacuum connection in fluid communication with the cylindrical cavity axis. A first impeller with an outer edge configured to sweep along the inner wall is axially disposed between the inlet and the outlet. A second impeller configured to eject liquid through the fluid outlet is axially disposed between the first impeller and the outlet.

A fluid moving system and apparatus for an electric submersible pump (ESP) is described. A fluid moving system includes a gas separator between an electric submersible pump and an ESP motor, the gas separator including a separation chamber including an impeller and a diffuser, the impeller including a plurality of regressively pitched main vanes interspersed between a plurality of mixer vanes, each of the plurality of main and mixer vanes extending along the hub with a positive slope and a concave top face, and a diffuser, the diffuser including blades extending along a diffuser body in a sloped direction substantially opposite the slope of the impeller main vanes, the blades having a concave top face and a regressive pitch that mirrors the pitch of the impeller main vanes, wherein the impeller vanes and diffuser blades serve to homogenize the well fluid while facilitating downstream movement.

A method for analyzing a gas sample conveyed in a drilling fluid involves liberating the gas sample from the drilling fluid, irradiating the gas sample with infrared radiation spanning a wavelength range in the near-infrared range, detecting absorption spectra associated with irradiating the gas sample, and determining a composition of the gas sample from the absorption spectra. The gas sample includes one or more of methane, ethane, propane, and butane, the detected absorption spectra are associated with irradiating each of the one or more of methane, ethane, propane, and butane, and the composition includes a concentration of any one or more of the methane, ethane, propane, and butane.

A bubble removing unit is disclosed including a body having an inner space, through which a liquid flows, in an interior thereof, a liquid introducing pipe through which the liquid is supplied to the body, a liquid discharging pipe through which the liquid, from which bubbles are removed, is discharged from the body, a bubble discharging pipe through which the bubbles are discharged from the inner space, and a rod-shaped bar situated in the inner space and a length of which extends in a lengthwise direction of the body, wherein a variable cross-section part situated between the liquid introducing pipe and the liquid discharging pipe and a cross-section of which varies along the lengthwise direction of the body is provided in the inner space of the body.

A stirring and defoaming device is a stirring and defoaming device of a revolution and rotation type, wherein a vacuum unit for sucking air in each container to bring the inside of each container into a vacuum state includes sealing bodies that seal respective containers, a vacuum generation source, a suction path running toward a revolution center with each container as a starting end, passing through the revolution center to go outside the system, and reaching the vacuum generation source placed outside the system, at least part of the suction path being an independent path from the starting end in association with each container, and at least two or more vacuum measurement units, each provided in an independent path.

A universal commode system (UCS) is provided and includes an air/liquid separator, a urine line connected to the air/liquid separator, a fan, a cabin air return line connected to the air/liquid separator and to the fan, a commode line connected to the cabin air return line, a first motor coupled to the air/liquid separator and configured to drive an operation of the air/liquid separator and a second motor independent of the first motor, coupled to the fan and configured to drive an operation of the fan.

Apparatus and method disclosed herein related to first stage gravity separation of liquid and sand from a gaseous fluid stream in an upper portion of a desanding vessel, sand separating from gas along an annular path about a shell, the sand-free gas directed back down into the shell to a fluid outlet for removal as a product stream. A second stage gravity separation of sand from accumulated liquid occurs in a lower section of the vessel. An optional final or polishing stage of the liquid is conduct using a filter. A stacked-plate filter can extend an intake opening of the fluid outlet into the accumulated liquid. Further, the filter plates can be configured with parallel filtering of gas/liquid separation for gas intake above, and with liquid/sand separation below including pressure management of the filter operation.

A variable oil field fluid treatment system and method of use which utilizes a pump, a desanding hydrocydone, and or a non-consumable or consumable mechanical solids filter, a membrane unit, a pump and/or combinations therein.

A surface-based separation assembly for use in separating fluid. The surface-based separation assembly includes a gas-liquid separator configured to receive a fluid stream, and configured to separate the fluid stream into a gas stream and a mixed stream of at least two liquids. A liquid-liquid separator is in flow communication with the gas-liquid separator. The liquid-liquid separator is configured to receive the mixed stream from the gas-liquid separator, and is configured to separate the mixed stream into a first liquid stream and a second liquid stream. The assembly further includes a rotatable shaft including a first portion extending through the gas-liquid separator, and a second portion extending through the liquid-liquid separator. The rotatable shaft is configured to induce actuation of the gas-liquid separator and the liquid-liquid separator.

Methods for extracting hydrocarbon gas utilize a vacuum chamber with a mud chamber portion that is expandable and contractible. Gas is extracted at vacuum pressures.