Thai Nippon Steel Engineering and Construction Corporation

Presentation on Central Processing Platform

Presented By: Preecha Natong

Thai Nippon Steel Engineering and Construction Corporation

AgendaAgenda

� Overview of Oil and Gas Facilities

� Basic Information for CPP

Thai Nippon Steel Engineering and Construction Corporation

Overview of Oil & Gas Facilities (Offshore)Overview of Oil & Gas Facilities (Offshore)� Offshore Oil & Gas Facilities typically consist of:

Main process platform.

Facilities for processing of

the incoming fluid

provided.

Manned platform.

WHP1

WHP2

WHP3

RiserPlatform

CentralProcessing

Platform

Utility &Living QtrsPlatform

Bridge

Support

Tripod

FlareTripod

Collects WellHead

fluids.

Can have Testing Facility

Normally Designed for

unmanned operation.

Contains risers from

WHPs. Facilities for pig

receipt and launching.

Normally no processing

facilities.

Supplies utilities for CPP.

Also provides

accomodation for operating

personnel.

Thai Nippon Steel Engineering and Construction Corporation

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

�� Overall Process Block DiagramOverall Process Block DiagramCentralCentral Processing PlatformProcessing Platform

GasGas

Water

OilFSO

WHPWHP

Thai Nippon Steel Engineering and Construction Corporation

CentralCentral Processing PlatformProcessing Platform� A Typical Central Processing Platform

Consist of the following facilities:

– Inlet Manifolds

– Product Separator

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

� The function of the Separator is to separate a mixed

phase stream into gas and liquid phases (Oil and water)

that are “relatively” free of each other

Inlet Device

Inlet Flow Distributor /

Calming Device

Plate Pack

Coalescer

Mist Eliminator

Weir Plate Vortex Breaker

Sand Jet

System

Gas

Water

Oil

Thai Nippon Steel Engineering and Construction Corporation

CPP Facilities (CPP Facilities (CotnCotn’’dd))� A Typical Central Processing Platform

Consist of the following facilities:

– Condensate Stabilizer

– Oil Metering and Export

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

What is Condensate Stabilisation?

� To remove the light ends of HC (C3/C4/CO2) to achieve the sales condensate specification.

FSO

Gas

Water

Oil

Thai Nippon Steel Engineering and Construction Corporation

CPP Facilities (CPP Facilities (CotnCotn’’dd))� A Typical Central Processing Platform

Consist of the following facilities:

– Flash Gas Compression

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

Why is Required?

� To compress and re-cycle the flashed gas from Condensate Stabiliser

to receiving facilities

Gas

Water

Oil

Thai Nippon Steel Engineering and Construction Corporation

CPP Facilities (CPP Facilities (CotndCotnd’’))� A Typical Central Processing

Platform Consist of the following facilities:– LP Feed Gas Compression

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

Why Feed Gas to be compressed?

� Increase driving force across the CO2 Removal Membrane Unit

� Reduce Membrane Area

� Enhancement Heavy Hydrocarbon Separation

Gas

Water

Oil

Thai Nippon Steel Engineering and Construction Corporation

CPP Facilities (CPP Facilities (CotndCotnd’’))� A Typical Central Processing

Platform Consist of the following facilities:

– Gas Purification [Mercury Removal]

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

Gas

Water

Oil

Why Mercury Removal is necessary ?

� To prevent corrosion and cracking of material.

� It’s hazard material when it accumulates in equipment, particularly during

plant turnarounds where equipment or piping is opened for inspection or

maintenance.

Thai Nippon Steel Engineering and Construction Corporation

CPP Facilities (CPP Facilities (CotndCotnd’’))� A Typical Central Processing

Platform Consist of the following facilities:

– Gas Purification [CO2 Removal Unit]

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

Why CO2 Removal is necessary ?

� In combination with water, CO2 is highly corrosive and rapidly destroys the

pipelines and equipment

� Presence of CO2 reduces the heating value of natural gas stream

� Presence of CO2 reduces pipeline capacity

Gas

Water

Oil

Thai Nippon Steel Engineering and Construction Corporation

CPP Facilities (CPP Facilities (CotndCotnd’’))

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

� A Typical Central Processing Platform Consist of the following facilities:

– MP Gas Compression (if Required)

– Natural Gas Liquid (NGL) Recovery

� What is Natural Gas Liquid ?

� Heavier hydro carbons (ethane, propane, butane iso-butane, etc) that recovered from

associated gas stream

�Why need NGL recovery?

� To Meet the Sales Gas Specification.

� To purify by remove heavier hydrocarbons from associated gas stream

Expander

Compressor

Gas

Water

Oil

Thai Nippon Steel Engineering and Construction Corporation

CPP Facilities (CPP Facilities (CotndCotnd’’))

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

� A Typical Central Processing Platform Consist of the following facilities:

– HP Gas Compression

– Gas Metering and Export

Why is required ?

� To increase Export Gas Pressure

GAS TURBINE

COMPRESSORAir

Inlet

Turbine Exhaust

BASEFRAME

GT C/P

Com

C/P

Gas

Water

Oil

Thai Nippon Steel Engineering and Construction Corporation

CPP Facilities (CPP Facilities (CotndCotnd’’))

Receiving

Facilities &

Inlet Separator

Mercury

Removal

CO2

Removal

NGL

Extraction

Export Gas

Compression

Condensate

Stabilization

Produced Water

Treatment

Flash Gas

Compression

Produced Water

Re-Injection

Feed Gas

Compression

� A Typical Central Processing Platform Consist of the following facilities:

– Produced Water Treatment Comprising of:

� Desanders

� Hydro cyclones

� Induced Gas floatation Units

� Water Disposal or Re-injection

Hydro-Cyclones

Accumulators

Why is required ?

� To treat produced water before disposal

� Follow regulation

Gas

Water

Oil

Thai Nippon Steel Engineering and Construction Corporation

Overall Block DiagramOverall Block Diagram –– UtilityUtility and Facilitiesand Facilities

CPP Facilities (CPP Facilities (CotndCotnd’’))

Fuel Gas

System

Flare

System

Closed Drain

System

Open Drain

System

Instrument &

Utility Air

System

Inert Gas

(N2)

System

Fresh Water

System

Main Power

Generation

System

Chemical

Injection

System

Utility /

Seawater

System

Material

Handling

System

Cooling

Medium

System

Hypo

Chlorination

System

Heating

Medium

System

Aviation Fuel

System

Emergency

Power

Generation

System

Diesel Fuel

System

Fire Water

System

DCS SystemESD

Fire and Gas

System

Platform

Crane

Thai Nippon Steel Engineering and Construction Corporation

QUESTION & ANSWERS

WELLHEAD

PLATFORM

CENTRAL PROCESSING PLATFORM