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Oil FlowOil Flow DiagramDiagram

Primary separation on platform ( off Primary separation on platform ( off shore).shore).

Oil come from platform separator Oil come from platform separator through 12through 12”” pipeline to onshore (4bar pipeline to onshore (4bar & 42°c) with length 4300m.& 42°c) with length 4300m.

Oil pass through heat exchanger Oil pass through heat exchanger (E1)to give output temp.( 56°c).(E1)to give output temp.( 56°c).

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Oil FlowOil Flow Diagram (Cont.)Diagram (Cont.)

Oil enter onshore separator(3bar) to Oil enter onshore separator(3bar) to separate liquid from gas.separate liquid from gas.

Gas from top goes to gas lift stream.Gas from top goes to gas lift stream. Liquid pass to flow tank to perform Liquid pass to flow tank to perform better separation(1bar).better separation(1bar). Gas exit from the top of the flow tank Gas exit from the top of the flow tank

to low flare.to low flare. Oil exit to 3 feed pumps (only one Oil exit to 3 feed pumps (only one

pump works) giving (20 bar). pump works) giving (20 bar).

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Oil FlowOil Flow Diagram (Cont.)Diagram (Cont.)

Oilywater from flow tank pass Oilywater from flow tank pass through pump (output 4bar)to through pump (output 4bar)to W.W.T.P.W.W.T.P.

Oil exit from pump pass through heat Oil exit from pump pass through heat exchanger(E2)but itexchanger(E2)but it’’s out of service.s out of service.

Oil enter the heater with (58°c & Oil enter the heater with (58°c & 20bar) to raise it20bar) to raise it’’s temp. to (90°c s temp. to (90°c &19bar). &19bar).

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Oil FlowOil Flow Diagram (Cont.)Diagram (Cont.)

There are two chemical pumps but it There are two chemical pumps but it standby for pumps on off shore.standby for pumps on off shore.

Oil then enters desalting unit(1Oil then enters desalting unit(1st st & 2& 2nd nd

desalter).desalter). Each desalter has three transformers Each desalter has three transformers

on iton it’’s top (electrical mechanism).s top (electrical mechanism). Fresh water pump (output 23bar) Fresh water pump (output 23bar)

discharges fresh water to the 2discharges fresh water to the 2nd nd

desalter.desalter.

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Oil FlowOil Flow Diagram (Cont.)Diagram (Cont.)

11st st desalter (90°c &18bar).desalter (90°c &18bar). 22nd nd desalter (80°c&17bar).desalter (80°c&17bar). Oil exit from the 2Oil exit from the 2nd nd desalter from itdesalter from it’’s s

top with(80°c&10bar).top with(80°c&10bar). 0il then pass again to heat 0il then pass again to heat

exchanger (E2)but itexchanger (E2)but it’’s out of service.s out of service. Oil pass through heat exchanger Oil pass through heat exchanger

(E1)to cool oil coming from off shore.(E1)to cool oil coming from off shore.

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Oil FlowOil Flow Diagram (Cont.)Diagram (Cont.)

Oil then pass to TRIM COOLER (input Oil then pass to TRIM COOLER (input 60°c & 5bar60°c & 5bar……..output 40°c & 5bar)...output 40°c & 5bar).

Finally oil enter the storage tank Finally oil enter the storage tank (250,000 bbl)(250,000 bbl)

Using blow down drum to adjust the Using blow down drum to adjust the pressure in the system.pressure in the system.

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10-V-1

11-V-211-V-1

12” Oil to Shore Line

Onshore Separator

Oil Heaters

Electrostatic Desalters

Storage Tanks

Trim Cooler

To gas system

To Flare

Heat Exchanger

2nd Heat Exchanger

Sea Water

Crude ProcessingCrude Processing

20-S-1/5 To PPC40°c

11-F-1/2

10-S-1/2

Desalter Feed Pumps

42°c&4bar 56°c

90°c

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Gas FlowGas Flow DiagramDiagram

Gas comes from production platform Gas comes from production platform through 20through 20”” pipeline(4 bar). pipeline(4 bar).

Gas pass through slug catcher to Gas pass through slug catcher to separate condensate from it.separate condensate from it.

Condensate goes to the flow tank to Condensate goes to the flow tank to increase API of oil.increase API of oil.

Then gas enter the gas scrubber(10-Then gas enter the gas scrubber(10-v-3) to separate condensate from it.v-3) to separate condensate from it.

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Gas FlowGas Flow Diagram (Cont.)Diagram (Cont.)

Gas passes through four gas Gas passes through four gas compressors.compressors.

Each compressor pass through loop.Each compressor pass through loop. First (gas) enter vessel1 (v1) 3bar & First (gas) enter vessel1 (v1) 3bar &

25.5°c to separate condensate from 25.5°c to separate condensate from it.it.

Then gas enter first stage Then gas enter first stage compression (input 2.8bar& 25°c ).compression (input 2.8bar& 25°c ).

Gas exit with (14.3bar & 123°c ).Gas exit with (14.3bar & 123°c ).

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Gas FlowGas Flow Diagram (Cont.)Diagram (Cont.)

Then cool through cooler (EA1)giving Then cool through cooler (EA1)giving output 13.7 bar & 55°c.output 13.7 bar & 55°c.

Then enter V2 to separate Then enter V2 to separate condensate (output 13.4 bar&53.8°c)condensate (output 13.4 bar&53.8°c)

Then enter the second stage Then enter the second stage compression to give output (41.4bar compression to give output (41.4bar & 125°c)& 125°c)

Then cool through cooler (EA2)giving Then cool through cooler (EA2)giving output 40.7 bar & 55°c.output 40.7 bar & 55°c.

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Gas FlowGas Flow Diagram (Cont.)Diagram (Cont.) Then enter V3 to separate Then enter V3 to separate

condensate (output 40.2 bar&42.8°c)condensate (output 40.2 bar&42.8°c) Gas coming from V3 go to glycol unitGas coming from V3 go to glycol unit

to remove water from gas.to remove water from gas. Blow down header is used for Blow down header is used for

emergencies.emergencies.

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Gas FlowGas Flow Diagram (Cont.)Diagram (Cont.)

Then enter the third stage Then enter the third stage compression to give output (92bar & compression to give output (92bar & 104°c).104°c).

Then cool through cooler (EA3)giving Then cool through cooler (EA3)giving output 91.6 bar & 55°c.output 91.6 bar & 55°c.

Condensate separated from each Condensate separated from each vessel, collected & go to flow tank.vessel, collected & go to flow tank.

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Gas from

Offshore

Slug Catcher

Gas K.O.D

To Flare

To Power Generators

To Gas Lift Station

Suction K.O.D1st Stage

(2.8 - 14.35 )bar

2nd Stage

(13.4 – 41.4) bar

3rd Stage

(39.2 - 92 )bar

Air Cooler

Air Cooler

Air Cooler

Gas to

Wells

K.O.D

K.O.D

K.O.D

Gas / Glycol Contactor

To Oil Sep.

Gas Lift CompressorsGas Lift Compressors

10-V-310-V-5

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Water Injection PlantWater Injection Plant

Sea water intake through pump Sea water intake through pump (24°c & 11bar)(24°c & 11bar)

The sea water go to electro The sea water go to electro chlorination to remove bacteria, then chlorination to remove bacteria, then pump it (3bar) to 3 filters to filter pump it (3bar) to 3 filters to filter water from impurities.water from impurities.

Two filters work & the other under Two filters work & the other under back washing every 8 hrs.back washing every 8 hrs.

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Water Injection Plant (Cont.)Water Injection Plant (Cont.)

Inject biocide (anti bacteria).Inject biocide (anti bacteria). Inject polymer electrolyte to Inject polymer electrolyte to

coalescence the impurities & settle it coalescence the impurities & settle it down.down.

Water out from the bottom of filters.Water out from the bottom of filters. Antifoam is injected to sea water line Antifoam is injected to sea water line

before water entrance to vacuum before water entrance to vacuum tower. tower.

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Water Injection Plant (Cont.)Water Injection Plant (Cont.)

Water enter the vacuum tower fromWater enter the vacuum tower from

top.top. Inject Oxygen scavenger.Inject Oxygen scavenger. Two vacuum pumps used for vapour Two vacuum pumps used for vapour

suction from two stages.suction from two stages. Use separator & water tank beside Use separator & water tank beside

vacuum pumps.vacuum pumps.

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Water Injection Plant (Cont.)Water Injection Plant (Cont.)

Water exit from vacuum bottom (-Water exit from vacuum bottom (-0.3bar) to booster pumps (5.8bar).0.3bar) to booster pumps (5.8bar).

Inject biocide ,corrosion & scale Inject biocide ,corrosion & scale inhibitor before booster pumps.inhibitor before booster pumps.

Then booster pumps deliver water to Then booster pumps deliver water to main injection pumps (180bar). main injection pumps (180bar).

Inject water to wells in offshore Inject water to wells in offshore (175bar) through 12(175bar) through 12’’’’ pipeline. pipeline.

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Booster / Main Injection Pumps

Multi - media Filters

De-aeration Tower

To Vacuum Package

First Stage

Second Stage

To Injectors

From S.W.I. basin

Water Injection PlantWater Injection Plant

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Thank youThank you