Abstract: A separator tank (1) for separating oil and gas from water comprises an essentially cylindrical vertical tank with at least one separator tank unit. The separator tank unit has an inlet for fluid (2) and a first inner annular wall (5) a first conical portion (9) and a first central opening (8). A second inner annular wall (15) is positioned at a distance from the first inner annular wall and has a second conical portion (19) and a second central opening (18). A first flow opening (10) is provided at an end of said first inner annular wall (5) and a second flow opening (20) is provided at an end of second inner annular wall (15).

Abstract: A separator tank (1) for separating oil and gas from water, and comprising an essentially cylindrical vertical tank casing (3) with a plurality of separator tank units (2). The separator tank units (2, 2?, 2?) are arranged on top of one another within a central area in an inner annular enclosure (4) that divides the separator tank into an annular outer area (5) and the central area. The flow paths of fluids to inlets (7) in the separator tank units (2) and from at least one second outlet (9) in the separator tank units are arranged at least in the annular outer area.

Abstract: A separator tank (1) for separating oil and gas from water, and comprising separator tank units (2, 2?, 2?) arranged on top of one another within an annular enclosure (4). An inlet pipe (14) is connected with the inlet for fluid in a first of the at least two separator tank units. A second outlet (9) in the first separator tank unit (2) is connected with the inlet (7) for fluid in a second of the at least two separator tank units (2?). A pressure control device controls the pressure downstream of the first outlets for oil and gas (8) so that the pressure at the first outlets (8) is lower than the pressure at the water outlet (26) on the separator tank.

Abstract: A separator tank (1) for separating oil and gas from water, and comprising an essentially cylindrical vertical tank casing (3) with a plurality of separator tank units (2). The separator tank units (2, 2?, 2?) are arranged on top of one another within a central area in an inner annular enclosure (4) that divides the separator tank into an annular outer area (5) and the central area.

Abstract: A separator tank (1) for separating oil and gas from water comprises an essentially cylindrical vertical tank with at least one separator tank unit. The separator tank unit has an inlet for fluid (2) and a first inner annular wall (5) a first conical portion (9) and a first central opening (8). A second inner annular wall (15) is positioned at a distance from the first inner annular wall and has a second conical portion (19) and a second central opening (18). A first flow opening (10) is provided at an end of said first inner annular wall (5) and a second flow opening (20) is provided at an end of second inner annular wall (15).

Abstract: A separator tank (1) for separating oil and gas from water, and comprising separator tank units (2, 2?, 2?) arranged on top of one another within an annular enclosure (4). An inlet pipe (14) is connected with the inlet for fluid in a first of the at least two separator tank units. A second outlet (9) in the first separator tank unit (2) is connected with the inlet (7) for fluid in a second of the at least two separator tank units (2?). A pressure control device controls the pressure downstream of the first outlets for oil and gas (8) so that the pressure at the first outlets (8) is lower than the pressure at the water outlet (26) on the separator tank.