Abstract: Decanter centrifuges and associated acceleration pipes and methods are provided. In accordance with an example, an acceleration pipe for use with a decanter centrifuge including a feed pipe and a screw conveyor having an acceleration chamber includes an acceleration pipe body adapted to be coupled to and rotate with the screw conveyor. The acceleration pipe body includes an acceleration pipe inlet and an acceleration pipe outlet. The acceleration pipe body defines an acceleration pipe flow path extending between the acceleration pipe inlet and the acceleration pipe outlet. The acceleration pipe body is adapted to receive a suspension at the acceleration pipe inlet from the feed pipe and to rotate the suspension, based on a corresponding rotation of the screw conveyor, prior to the suspension exiting the acceleration pipe outlet and being received by the acceleration chamber of the screw conveyor.

Abstract: The present disclosure relates to a centrifugal separator (1), which comprises a rotatable drum (5) having a wall (50), an annular chamber (7) defined along the longitudinal axis (49) of the rotatable drum (5) in a portion adjoining to the wall (50), wherein a mixture of substances in the liquid phase and in the solid phase is movable longitudinally through the annular chamber (7), and a discharging station (13) for discharging the solid phase. The discharging station (13) comprises a vibrating unit (300) for agitating the solid phase. The vibrating unit (300) comprises a half-drum (302) and a vibrating device (304) adapted to vibrate the half-drum (302).

Abstract: A continuous vacuum transport system and method transport cuttings from a filtration system to a collection location. The filtration system discharges cuttings into a discharge manifold. The cuttings travel though a vacuum conduit into a vacuum hub. A control system controls holding tanks in the vacuum hub to fill one of the holding tanks while emptying one of the holding tanks. The cuttings flow from the vacuum hub through a transport conduit to a discharge end. The discharge end feeds into the connection location.

Abstract: Systems and methods recycle liquid(s) by introducing at least a portion of a first liquid from a first centrifuge into a tank. At least a portion of a second liquid is introduced from a second centrifuge into the tank. The first liquid and the second liquid are mixed together in the tank to produce a mixed liquid. At least a portion of the mixed liquid is introduced from the tank into the second centrifuge. Particles from the mixed liquid are separated using the second centrifuge, thereby producing the at least a portion of the second liquid that is introduced from the second centrifuge into the tank.

Abstract: The present disclosure relates to a centrifugal separator (1), which comprises a rotatable drum (5) having a wall (50), an annular chamber (7), defined along the longitudinal axis (49) of the rotatable drum (5) and bordering the wall (50), an annular screw feeder (90) accommodated rotatably in the annular chamber (7) for moving a mixture of substances in the liquid phase and in the solid phase longitudinally through the annular chamber (7), and separation nets (100) arranged in the wall (50) of the rotatable drum (5). The separation nets (100) have meshes for filtering the solid phase from the liquid phase by rotation of the drum (5). The separation nets (100) are movable relative to the wall (50).

Abstract: Systems and methods recycle liquid(s) by introducing at least a portion of a first liquid from a first centrifuge into a tank. At least a portion of a second liquid is introduced from a second centrifuge into the tank. The first liquid and the second liquid are mixed together in the tank to produce a mixed liquid. At least a portion of the mixed liquid is introduced from the tank into the second centrifuge. Particles from the mixed liquid are separated using the second centrifuge, thereby producing the at least a portion of the second liquid that is introduced from the second centrifuge into the tank.

Abstract: A centrifuge, including: a flange closing off one axial end of a separation chamber; a plurality of apertures that traverse axially through the flange at a radial distance from a flange axis, wherein at least one aperture is in fluid communication with a first outlet passage; a plurality of weir inserts removably disposed within the plurality of apertures to control a flow of one or more fluids from the separation chamber; wherein at least one weir insert disposed within the at least one aperture in fluid communication with the first outlet passage is changeable to prevent or allow fluid communication between the separation chamber and the first outlet passage.

Abstract: A continuous vacuum transport system and method transport cuttings from a filtration system to a collection location. The filtration system discharges cuttings into a discharge manifold. The cuttings travel though a vacuum conduit into a vacuum hub. A control system controls holding tanks in the vacuum hub to fill one of the holding tanks while emptying one of the holding tanks. The cuttings flow from the vacuum hub through a transport conduit to a discharge end. The discharge end feeds into the connection location.

Abstract: A dual feed centrifuge system for separating solids from fluids in a drilling mud, the centrifuge system including: a bowl; a screw conveyor rotatably mounted within the bowl; a first feed pipe mounted within the screw conveyor for feeding a drilling mud through a first feed port in a wall of the screw conveyor to a first annular space between the bowl and the wall of the screw conveyor; and a second feed pipe mounted within the screw conveyor for feeding a drilling mud through a second feed port in the wall of the screw conveyor to a second annular space between the bowl and the wall of the screw conveyor. The multiple feed ports may allow the centrifuge to operate more efficiently with both weighted and unweighted drilling fluids.

Abstract: A centrifuge, including: a flange closing off one axial end of a separation chamber; a plurality of apertures that traverse axially through the flange at a radial distance from a flange axis, wherein at least one aperture is in fluid communication with a first outlet passage; a plurality of weir inserts removably disposed within the plurality of apertures to control a flow of one or more fluids from the separation chamber; wherein at least one weir insert disposed within the at least one aperture in fluid communication with the first outlet passage is changeable to prevent or allow fluid communication between the separation chamber and the first outlet passage.

Abstract: A centrifuge, including: a flange closing off one axial end of a separation chamber; a plurality of apertures that traverse axially through the flange at a radial distance from a flange axis, wherein at least one aperture is in fluid communication with a first outlet passage; a plurality of weir inserts removably disposed within the plurality of apertures to control a flow of one or more fluids from the separation chamber; wherein at least one weir insert disposed within the at least one aperture in fluid communication with the first outlet passage is changeable to prevent or allow fluid communication between the separation chamber and the first outlet passage.

Abstract: A centrifuge, including: a flange closing off one axial end of a separation chamber; a plurality of apertures that traverse axially through the flange at a radial distance from a flange axis, wherein at least one aperture is in fluid communication with a first outlet passage; a plurality of weir inserts removably disposed within the plurality of apertures to control a flow of one or more fluids from the separation chamber; wherein at least one weir insert disposed within the at least one aperture in fluid communication with the first outlet passage is changeable to prevent or allow fluid communication between the separation chamber and the first outlet passage.

Abstract: A dual feed centrifuge system for separating solids from fluids in a drilling mud, the centrifuge system including: a bowl; a screw conveyor rotatably mounted within the bowl; a first feed pipe mounted within the screw conveyor for feeding a drilling mud through a first feed port in a wall of the screw conveyor to a first annular space between the bowl and the wall of the screw conveyor; and a second feed pipe mounted within the screw conveyor for feeding a drilling mud through a second feed port in the wall of the screw conveyor to a second annular space between the bowl and the wall of the screw conveyor. The multiple feed ports may allow the centrifuge to operate more efficiently with both weighted and unweighted drilling fluids.