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VESSELS / INTERACTIVE 3D

Free-water knockout cutaway

Inspect a 43-part unheated two-phase vessel with a drilled quieting plate, distinct free-water draw and oil-and-gas emulsion exit.

Static preview of the free-water knockout cutaway schematic
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Drag to orbit · Scroll or pinch to zoom · Select a visible part or use the parts list. Keyboard: focus the view and use arrow keys to orbit.

HOW TO READ THIS MODEL

The system, explained.

A free-water knockout removes water that separates readily from produced fluids. This original horizontal cutaway shows a mixed-feed inlet, separate inlet impact marker, perforated quieting-baffle location, two arbitrary liquid-region planes, a lower water-collection marker and separate water and oil-and-gas emulsion boundaries. Kimray describes two-phase FWKOs with a water draw and a combined oil/gas emulsion outlet, followed by further treatment; SLB notes that FWKO and three-phase-separator terminology can overlap. This illustration chooses a two-phase variant to contrast with our separate three-phase lesson. All proportions and plate locations are invented. The full browser vessel is closed; only the static poster cuts away its facing wall.

Model scope and limits

Original 43-part unheated two-phase teaching vessel. The full shell has six actual wall openings and five open neck/collar pairs; the quieting-location plate has 19 geometric holes. A lower water-pocket marker, separate closed inspection cover, two static phase planes and four bored foot openings are inspectable. The interactive vessel opens in a closed view; the half-section control reveals the interior for learning. No selected inlet or baffle design, water/emulsion quality, residence time, separation, levels, pressure, temperature, heating, instrumentation, dump-valve control, relief, corrosion/material choice, rating, safe access, product specification, downstream treater or qualified installation.

Further reading: Kimray training: general FWKO roles and two- versus three-phase arrangements; no product drawing, dimensions or settings copied ↗

Source links support further study; no affiliation or endorsement is implied.

CHECK YOUR UNDERSTANDING

What does the separate lower outlet establish?

Choose an answer

GUIDED COMPONENT STUDY

Trace the system.

Read each explanation, then focus its component in the explorer. This is a learning route through the model, with no operating or maintenance sequence.

  1. Start with the mixed feed

    The upper inlet is a real open boundary through the complete shell. It is not a selected inlet device, feed composition or rated connection.

  2. Compare the separate impact marker

    The original plate marks a possible diversion location. Its shape and spacing do not establish momentum reduction or separation performance.

  3. Inspect the full shell

    The browser model retains both wall surfaces and six bored openings. Only the poster removes its facing half for reading.

  4. Find a quieting location

    Nineteen geometric holes make the plate inspectable. Their count, size and pattern are invented, not an engineered quieting-baffle design.

  5. Distinguish free water from emulsion

    The blue plane has an arbitrary height. It is not a measured interface, water cut, residence time or settled-water volume.

  6. See an open lower collection marker

    Separate panels suggest a lower collection region. The gaps are visible; no hydraulic seal or complete internal piping is specified.

  7. Trace the independent water draw

    This lower open neck is separate from the upper exit. Actual dump valves, level-control logic and water handling are outside the model.

  8. Keep the emulsion destination distinct

    The two-phase teaching choice leaves oil and gas together for further treatment. It does not imply a sales-ready oil or gas product.

  9. Locate an uninstrumented interface boundary

    Two side openings mark possible level observation locations only. No floats, transmitters, calibration, setpoints or control loop are modeled.

  10. Read access as closed

    The side opening has a separate solid cover in a static closed pose. This is not a vessel-entry, isolation or maintenance procedure.

Additional primary references: Kimray: free-water knockout roles, inlet diverter, quieting baffle, and two- versus three-phase arrangements; checked September 27, 2026 ↗ · SLB glossary: FWKO emphasis on free water and overlapping three-phase terminology; checked September 27, 2026 ↗ · ATLAS Oil & Gas Process Systems, Nisku: free-water knockout vessels vary by field conditions; checked September 27, 2026 ↗

Compare free-water and three-phase roles.

Inspect separate gas, oil and water outlets ↗

The new FWKO drawing chooses an unheated two-phase boundary for learning. FWKO terminology can also describe three-phase vessels. Neither independent model establishes a selected process, outlet specification or separation result.

ACCESSIBLE COMPONENT REFERENCE

Every part, in plain language.

Search all components ↗Model provenance ↗
Display plinth

Presentation base, not an installed foundation. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

FWKO hollow vessel wall

Complete double-surface horizontal enclosure with real selected side openings. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Dished end -1

Generic double-surface dished closure. Shape and thickness are illustrative, with no code qualification.

End seam marker -1

Visible junction only; no weld or code-head specification. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Dished end 1

Generic double-surface dished closure. Shape and thickness are illustrative, with no code qualification.

End seam marker 1

Visible junction only; no weld or code-head specification. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Mixed feed hollow neck

Open connection at a real wall opening; destination and rating are not selected. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Mixed feed open collar

Separate open collar; no gasket, bolt or mating-pipe qualification. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Oil-and-gas emulsion exit hollow neck

Open connection at a real wall opening; destination and rating are not selected. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Oil-and-gas emulsion exit open collar

Separate open collar; no gasket, bolt or mating-pipe qualification. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Separate free-water draw hollow neck

Open connection at a real wall opening; destination and rating are not selected. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Separate free-water draw open collar

Separate open collar; no gasket, bolt or mating-pipe qualification. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Lower interface boundary hollow neck

Open connection at a real wall opening; destination and rating are not selected. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Lower interface boundary open collar

Separate open collar; no gasket, bolt or mating-pipe qualification. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Upper liquid boundary hollow neck

Open connection at a real wall opening; destination and rating are not selected. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Upper liquid boundary open collar

Separate open collar; no gasket, bolt or mating-pipe qualification. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Separate inlet impact plate

Invented diverter-position plate, not a selected impact device. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Diverter standoff 1

Independent support marker; no attachment or load design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Diverter standoff 2

Independent support marker; no attachment or load design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Quieting baffle with actual openings

Invented perforated plate location. Hole count and spacing are not selected design values. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Baffle support tie -0.67

Illustrative plate-location support, without weld or strength design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Baffle support tie 0.67

Illustrative plate-location support, without weld or strength design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Static free-water boundary plane

Arbitrary blue reading plane, not a measured interface or separated volume. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Static emulsion region marker

Arbitrary upper liquid marker; no product quality or oil level result. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Water-pocket floor marker

Open-spaced lower collection-location marker; no seal or hydraulic result. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Water-pocket far rail

Open-spaced lower collection-location marker; no seal or hydraulic result. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Water-pocket near rail

Open-spaced lower collection-location marker; no seal or hydraulic result. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Water-pocket end marker

Open-spaced lower collection-location marker; no seal or hydraulic result. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Inspection neck

Bored inspection location with a separate closed cover. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Inspection cover seat

Annular cover position; no gasket or pressure rating. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Closed inspection cover

Separate solid cover in a closed pose. No vessel-entry procedure. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Saddle support -1.76

Static support location; no structural or foundation design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Bored saddle foot -1.76

Separate base plate with actual anchor openings. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Smooth anchor marker -1.76 1

Unthreaded location marker through an open foot hole. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Anchor washer -1.76 1

Separate annular washer marker; no retention or preload design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Smooth anchor marker -1.76 2

Unthreaded location marker through an open foot hole. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Anchor washer -1.76 2

Separate annular washer marker; no retention or preload design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Saddle support 1.76

Static support location; no structural or foundation design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Bored saddle foot 1.76

Separate base plate with actual anchor openings. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Smooth anchor marker 1.76 1

Unthreaded location marker through an open foot hole. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Anchor washer 1.76 1

Separate annular washer marker; no retention or preload design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Smooth anchor marker 1.76 2

Unthreaded location marker through an open foot hole. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.

Anchor washer 1.76 2

Separate annular washer marker; no retention or preload design. Original generic static geometry: no selected vessel, pressure rating, level setpoint, separation efficiency, fluid condition, control system, downstream treatment or service qualification.