A mechanical separator for separating a fluid sample into first and second phases within a collection container is disclosed. The mechanical separator may have a separator body having a through-hole defined therein, with the through-hole adapted for allowing fluid to pass therethrough. The separator body includes a float, having a first density, and a ballast, having a second density greater than the first density. A portion of the float is connected to a portion of the ballast. Optionally, the float may include a first extended tab adjacent a first opening of the through-hole and a second extended tab adjacent the second opening of the through-hole. In certain configurations, the separator body also includes an extended tab band disposed about an outer surface of the float. The separator body may also include an engagement band circumferentially disposed about at least a portion of the separator body.

A system and process for removing solids from raw, untreated liquid that combines mechanical techniques, such as via shakers, hydrocyclones author centrifuges, with an additive technique for removal of smaller solids. The additive is selected according to the application. In drilling mud applications, preferred additive embodiments are polyaluminum chloride or polyacrylamide flocculants. Preferably, liquid additive precursors are pre-mixed separately and are then blended before injection into the solids removal process. Some embodiments provide an externally-actuated rack and pinion mud screen lock for simplified screen lockdown on shakers. Some embodiments provide a separate preliminary processing and feed system for pretreatment of the raw, untreated liquid.

A cyclonic inlet diverter for initiating the separation of a multi-phase inlet fluid flow comprises an enclosed tubular body mounted crosswise within a larger separator vessel. The inlet diverter includes a splitter plate positioned within a center portion of the tubular body and configured to split the inlet flow into a first stream and a second stream, and a swirl plate positioned on each side of the splitter plate with angled surfaces configured to increase the cyclonic motion of the first and second streams within the tubular body. The inlet diverter further includes elongate apertures formed through bottom sidewall portions of the tubular body on each side of the splitter plate, an axial aperture formed through opposing end caps of the tubular body, and at least one radial aperture formed through lateral sidewall portions of the tubular body proximate each opposing end cap.

A method for separating solids from liquids is disclosed. A double-roller system is provided. A process fluid is provided to the double-roller system. The process fluid comprises a suspended solid and a process liquid. The suspended solid comprises non-fibrous solid particles. A portion of the process fluid is compressed through the double-roller system to produce a compressed portion of the suspended solid. A product stream and a dilute fluid stream are separated. The product stream comprises a compressed portion of the suspended solid and a first portion of the process liquid. The dilute fluid stream comprises a second portion of the suspended solid and a second portion of the process liquid.

The system and method for processing flowback fluid include a plurality of wellheads producing flowback fluid flows, a manifold skid, a plurality of first stage separators corresponding to at least one wellhead of an installation with multiple wellheads and multiple flowback fluid flows, a plurality of metering devices corresponding to each first stage separator, and a second stage separator in fluid connection with the metering devices and the first stage separators. Flowback fluid flows pass from the wellhead to the manifold skid so that the flowback fluid flows can be distributed under controlled conditions, such as temperature, pressure, and flow rate. The manifold skid improves safety, efficiency, and control of the later separation processes in the first stage separators and second stage separator.

A method and apparatus for the removal of surface scum by using an apparatus in connection with a liquid tank, including a collecting arrangement for gathering surface scum and removing the same from the liquid tank with a surface scum discharge arrangement, and an overflow arrangement based on continuous flow for separating liquid to be treated from surface scum and for removing purified liquid from the liquid tank. The presently treated liquid is overflowed from the liquid tank into a escort water collecting space included therein by way of which it is removed from the immediate vicinity of the liquid tank. The surface scum is removed with a separating arrangement by which the surface scum is first of all separated from liquid to be treated in the liquid tank below its supernatant layer of surface scum while being flowed into the escort water collecting space and is conveyed at the same time into a collecting space of the collecting arrangement.

Removable trap stations for hydrocarbon flowlines can be implemented as an apparatus. The apparatus includes a multi-phase fluid receiver body and a tank defining an interior volume. The fluid receiver body is configured to couple to a flowline carrying a multi-phase fluid including solids and liquids. The fluid receiver body includes an inlet portion configured to receive a portion of the multi-phase fluid including a portion of the solids flowing through the flowline into the receiver body. The fluid receiver body includes an outlet portion fluidically coupled to the inlet portion. The portion of the multi-phase fluid is configured to flow from the inlet portion to the outlet portion. The tank is fluidically and detachably coupled to the outlet and is configured to receive and retain the portion of the multi-phase fluid received through the inlet portion

Method and system for separation of produced water into a water fraction, a solids fraction and a hydrocarbon fraction, comprising feeding produced water into a collapsible flexible bag maintained subsea by a protection structure; operating the flexible bag at an overpressure and thereby providing a predefined geometry of the flexible bag; maintaining the produced water in the flexible bag to allow for gravitational separation of the solids fraction with a higher density than water in a lower section and optionally separation of the hydrocarbon fraction with a lower density than water in an upper section; removing the water fraction from a section above the lower section; optionally removing hydrocarbons from the upper section and replacing the flexible bag to remove the solids fraction.

A separation system for separating the components of a multi-phase fluid includes at least three tanks coupled together in series, with each tank enclosing a column of multi-phase fluid and having a tubular center riser that is divided into a distribution section and a gathering section, and with each center riser being configured to established a fluid circulation pattern having a radially-outward travel first leg, a vertical travel second leg, and a radially-inward travel third leg within the corresponding column of multi-phase fluid that is configured to separate at least one of a gas component, an oil component, and a particulate matter component from a water component of the multi-phase fluid, and with the height of the columns of multi-phase fluid in the first tank and the second tank being substantially equal to each other and determined by the height of a pour-over opening in the center riser of the third tank.

A flocculation and sedimentation apparatus has: sedimentation tank that causes flocs in raw water to be sedimented and separated; sludge concentration tank that is surrounded by sedimentation tank and that collects and concentrates the flocs; and raw water supply mechanism having center line that passes through sludge concentration tank, wherein raw water supply mechanism rotates about center line and supplies the raw water to sedimentation tank. Raw water supply mechanism includes: raw water introducing portion that is located on center line and to which the raw water is introduced, raw water supply port that is open at a lower portion of an inner space of sedimentation tank and that supplies the raw water to sedimentation tank, and pipe portion that communicates both with raw water introducing portion and with raw water supply port and that extends above sludge concentration tank in a direction away from center line.