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Three Wany Phase Separator & Chamber Surge Tank-All

 
  Chamber Surge Tank Detailed parameter  
 

Process design pressure at 250°F (psi/MPa)

250/ 1.725

Process design temperature (°F/°C)

-20° to 250°/ -29° to 121°

Maximum working pressure at 250°F (psi/MPa)

250 /1.725

Maximum oil rate (normal liquid level) (bbl/d, cu m/d)

40,000/6,359

Maximum gas rate (normal liquid level) (MM cu ft/d, MM cu m/d)

5/ 0.142

Compartments

Twin

Capacity (bbls/cu m)

100 /16

Service conditions

H₂S / CO₂

Outside dimensions (L × W × H) (ft/m)

19.88 × 8.00 × 9.50/ 6.058 × 2.438 × 2.896

Approximate empty weight (lb/kg)

19,842/ 9,000

Fluid inlet

3-in. Figure 602 union thread

Fluid outlet - gas

3-in. Figure 602 union wing

Fluid outlet - oil

3-in. Figure 602 union wing

Fluid outlet - drain

3-in. Figure 602 union wing

Fluid outlet - vent

3-in. Figure 602 union wing

Steam inlet

2-in. Figure 602 union thread

Steam outlet

2-in. Figure 602 union wing

Full-bore valves and bypass manifold

Yes

Pressure sensing points

Oil and water lines

Temperature sensing points

Oil and water lines

Fluid sampling points

Oil and water lines

Gas measurement equipment

Not applicable

Oil measurement equipment

Calibrated sight glass

Water measurement equipment

Calibrated sight glass

Oil heating coil

Applicable

Vessel pressure control equipment on gas Line

3-in. Fail-open pneumatic pressure control valve with Fisher pressure controller

Safety devices

Pressure safety valve and Rupture Disc mounted directly on independent vessel nozzles with 3-in. vent line to base skid edge

Hi-Lo level alarm system with twin air horns

2 × grounding points on opposite diagonals of base skid

Vessel manway

20-in. diameter, ANSI 150RF flange, located at rear of vessel

Standards

ASME VIII Div I

ANSI B.31.3

NACE MR-01-75

Well test surge tank has a pressure-containing two-phase, 100-barrel, Twin-compartment vertical design. It is used to measure liquid flow and/or prove meters during a well test and is required when handling sour crude, where venting to the atmosphere is prohibited. The surge tank can also be used as a second-stage, two-phase separator. The vessel is protected from overpressure by two independent safety relief valves on a contained vent line.

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