Basic whp presentation(1)

Basic Wellhead

1. Thai Nippon Steel Engineering and Construction Corp oration
Oil & Gas 
Facilities 
Overview

2. Thai Nippon Steel Engineering and Construction Corp oration
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SCHEMATIC PIPELINE & PLATFORM

3. Thai Nippon Steel Engineering and Construction Corp oration
Overview of Oil & Gas Facilities Overview of Oil & Gas Facilities (Offshore) (Offshore)

Offshore Oil & Gas Facilities typically
consist of:
–
Wellhead Platforms
–
Riser Platforms
–
Central Processing Platforms
–
Utility and Living Quarter Modules
–
Flare Tripods and
–
Bridges and Bridge Support Platforms

4. Thai Nippon Steel Engineering and Construction Corp oration
Overview of Oil & Gas Facilities (Offshore) Cont Overview of Oil & Gas Facilities (Offshore) Cont
’’
dd
WHP
1
WHP
2
WHP
3
Riser
Platform
Central
Processing
Platform
Utility &
Living Qtrs
Platform
Bridge
Support
Tripod
Flare
Tripod
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.
Main process platform.
Facilities for processing of
the incoming fluid
provided.
Manned platform. Supplies utilities for CPP.
Also provides
accomodation for operating personnel.

5. Thai Nippon Steel Engineering and Construction Corp oration
Well Head 
Platform 
Overview

6. Thai Nippon Steel Engineering and Construction Corp oration Overview Wellhead Platforms Overview Wellhead Platforms

A Typical Wellhead Platform Consist of
the following facilities:
–
Slots for Drilling Wells
–
Wellhead with control and safeguarding
facilities for safe operation. –
Production Manifolds
–
Test Manifolds
–
Testing Facilities, which can either be:

Test Separator or

Multi-Phase Flow Metering

7. Thai Nippon Steel Engineering and Construction Corp oration
Overview Wellhead Platforms (Cont Overview Wellhead Platforms (Cont
’’
d)d)

Wellhead Platform Consist of facilities: (cont’d)
–
Wellhead Control Panel
–
Instrument Gas System
–
Cold Vent and off gas disposal system
–
Diesel System
–
Power Generation / Supply System
–
ESD and Control system
–
Chemical Injection System

8. Thai Nippon Steel Engineering and Construction Corp oration
Overview Wellhead Platforms Overview Wellhead Platforms
Wellhead Platform Consist of facilities:
(cont’d)
–
Deck Crane
–
Radio Telemetry System
–
Fire and Gas Detection System

9. Thai Nippon Steel Engineering and Construction Corp oration Process System for a Typical WHP Process System for a Typical WHP Process System for a Typical WHP Process System for a Typical WHP
Vent from other
sources
Choke Valve
Wing Valve
Master Valve
DHSV
From Other
Wells
Kicker Line
ESD
Valve
Pipeline (Sealine) to
Processing Plant
Pig Launcher
Shutdown
Valve
Test
Separator
Pressure Control
Level Control Valve
Level Control Valve
LIC
FIQ
LIC FIQ
FIQ
PIC
Production
Manifold
Test Manifold
Barred "T"
From Drain System
To CCVT
To Hydraulic Oil Unit
Other
Instrument Gas Filter
Sump Tank
Air Cooler
Pressure Reducing Valve
Flowline
Gas
Condensate
Water
Corrosion Inhibitor Injection

10. Thai Nippon Steel Engineering and Construction Corp oration
Primary
Function
TEST SEPARATOR
To separate oil, water, gas
To measure individual flow of oil, water, gas In
order to evaluate well performance
TEST SEPARATOR
(CAN BE 2 PHASE OR
CAN BE 3 PHASE)
WELL TESTING
WELL BLOWDOWN
WELL CLEANING
Design
Function

11. Thai Nippon Steel Engineering and Construction Corp oration
PIGGING
PIPELINE CLEANING WAX REMOVAL
PIGGING SYSTEM 
SCHEMATIC OF PIG LAUNCHER FOR REFERENCE
PIG LAUNCHER
PIG RECIEVER

12. Thai Nippon Steel Engineering and Construction Corp oration
VENT & FLARE
VENT = SYSTEM DESIGNED TO VENT GAS TO ATMOSTPHERE
WITHOUT FLARING
COLD VENT = VENT HANDLING SIGNIFICANT FLOWRATE FROM
PRESSURISED EQUIPMENT.
Suitable for Satellite wellhead installations due t o
limited source of ignition.
COLD MEANS “WITHOUT FLAME”
COLD VENT – CRITERIA (TYPICAL)
H2S should be
less than 0.5 %
& molecular wt.
should be less
than 60
Velocity should
be greater
than 150 m/s
Relieving temp
should be less
than auto Ignition
temp. of gas
being relieved
Vented volume
should be
less than
8.5 MSm3/Yr
Gas
Concentration
Should be less
than 100% LFL
In case of
accident Ignition,
radiation should
be less than
1500 btu/hr/sqft
Cold Vent

13. Thai Nippon Steel Engineering and Construction Corp oration
FLARE = DISPOSAL SYSTEM
DESIGNED TO BURN
GAS
1. Combustion of hydrocarbon converts in to less
objectionable & less harmful compounds.
2. Elevated flares assist in gas dispersion.
3. Elevated flares generally have lower radiation
level.
4. Elevated flare are preferred if effluent are
acidic/toxic.
W
H
E
N
/
W
H
Y
WIND SOCK
FLARE LINE
VENT & FLARE (Cont’d)

14. Thai Nippon Steel Engineering and Construction Corp oration
INSTRUMENT & FUEL/UTILITY GAS
To instruments
To Turbo generator
To Well head control panel
To Other consumers
To Closed Drain
Filter
Elements
Mesh pad/
Vane pack
Condensate
From Pipeline
B
y
p
a
s
s
Instrument gas filter/separator Remember !!
Should be tapped off from top of the vertical riser , down
stream of launcher to avoid any problems arising ou t of
sudden change in composition when NEW WELL
comes on
line.
Instrument & utility gas system should be separate
in order
to avoid liquid carryover in instrument gas system when
demand for utility gas is very high.

15. Thai Nippon Steel Engineering and Construction Corp oration
DRAIN SYSTEM
CLOSED DRAIN
OPEN DRAIN
1. RECOVERY OF HYDROCARBONS FROM
EQUIPMENTS & PIPING FOR MAINTENANCE
AND PRIOR TO LONG TERM SHUTDOWN.
2. LIQUID FROM SUMP TANK VIA SUMP PUMP
DISCHARGE.
1. COLLECTION OF RAIN WATER & WASH WATER
FROM HAZARDOUS AND NON-HAZARDOUS
AREA
2. ANY OTHER OPEN DRAIN FROM PLATFORM.
3. A PUMP WILL DISCHARGE TO DISPOSAL TUBE
OR OVER BOARD SUBJECT TO COLLECTED
WATER BEING FREE OF HYDROCARBON.
OPEN AND CLOSED DRAIN SYSTEM

16. Thai Nippon Steel Engineering and Construction Corp oration
INJECTION
PUMP
CHEMICAL INJECTION SYSTEM
Corrosion Inhibitor
Methanol
Prevent Hydration Prevent Corrosion

17. Thai Nippon Steel Engineering and Construction Corp oration
Well Head 
Installation

18. Thai Nippon Steel Engineering and Construction Corp oration
Upper Deck Lower Deck
Sump Tank Deck
Boat Landing
Jacket
Deck

19. Thai Nippon Steel Engineering and Construction Corp oration

20. Thai Nippon Steel Engineering and Construction Corp oration
Jacket Installation

21. Thai Nippon Steel Engineering and Construction Corp oration
Jacket Installation(Cont’d)

22. Thai Nippon Steel Engineering and Construction Corp oration
Jacket Installation(Cont’d)

23. Thai Nippon Steel Engineering and Construction Corp oration
Jacket Installation(Cont’d)

24. Thai Nippon Steel Engineering and Construction Corp oration
Deck Installation

25. Thai Nippon Steel Engineering and Construction Corp oration
Deck Installation(Cont’d)

26. Thai Nippon Steel Engineering and Construction Corp oration
Well Head 
Platform 
Visit
Service Boat

27. Thai Nippon Steel Engineering and Construction Corp oration
Well Head Overview

28. Thai Nippon Steel Engineering and Construction Corp oration
Pedestal Crane
Vent Boom
Vent Tip

29. Thai Nippon Steel Engineering and Construction Corp oration
Export Line to Sea Line

30. Thai Nippon Steel Engineering and Construction Corp oration
Closed Cycle Vapor 
Turbo-Generator (CCVT)
Corrosion 
Inhibitor 
Storage Tank

31. Thai Nippon Steel Engineering and Construction Corp oration
Sump Tank
Corrosion 
Inhibitor 
Storage Tank

32. Thai Nippon Steel Engineering and Construction Corp oration
Helideck
Netting

33. Thai Nippon Steel Engineering and Construction Corp oration
Boat Landing
Boat Impact

34. Thai Nippon Steel Engineering and Construction Corp oration
Christmas Tree

35. Thai Nippon Steel Engineering and Construction Corp oration
Pig Launcher

36. Thai Nippon Steel Engineering and Construction Corp oration
Personnel Protection

37. Thai Nippon Steel Engineering and Construction Corp oration
Open Drain System

38. Thai Nippon Steel Engineering and Construction Corp oration
ESD Hand Switch

39. Thai Nippon Steel Engineering and Construction Corp oration

40. Thai Nippon Steel Engineering and Construction Corp oration
Flashing Light

41. Thai Nippon Steel Engineering and Construction Corp oration
Liferafts

42. Thai Nippon Steel Engineering and Construction Corp oration
Portable 
Extinguisher

43. Thai Nippon Steel Engineering and Construction Corp oration
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