+ All Categories
Home > Documents > L10 - NEW TECHNOLOGIES

L10 - NEW TECHNOLOGIES

Date post: 01-Jul-2015
Category:
Upload: u-kyaw-kyaw-naing
View: 432 times
Download: 2 times
Share this document with a friend
Popular Tags:
36
L10 - NEW TECHNOLOGY : SUBSEA PROCESSING & BOOSTING SUBSEA MULTIPHASE PUMPING PARTIAL SUBSEA SEPARATION / PRESSURE BOOSTING SYSTEMS FULL SUBSEA SEPARATION SUBSEA GAS BOOSTING TEST AND OPERATIONAL RESULTS OTHER SEABED PROCESSES RECENT HEADLINE FIELD UTILISING NEW TECHNOLOGIES
Transcript
Page 1: L10 - NEW TECHNOLOGIES

L10 - NEW TECHNOLOGY : SUBSEA PROCESSING & BOOSTING

• SUBSEA MULTIPHASE PUMPING

• PARTIAL SUBSEA SEPARATION / PRESSURE BOOSTING SYSTEMS

• FULL SUBSEA SEPARATION

• SUBSEA GAS BOOSTING

• TEST AND OPERATIONAL RESULTS

• OTHER SEABED PROCESSES

• RECENT HEADLINE FIELD UTILISING NEW TECHNOLOGIES

Page 2: L10 - NEW TECHNOLOGIES

Subsea Boosting, Why?

• Enhanced and faster production-Wellhead pressure draw-down -Compressor discharge pressure overcomes back-pressure and frictional losses

• Reduced OPEX

• Reduced CAPEX

• De-bottle-necking oil production

• Development and production of low pressure reservoirs

Page 3: L10 - NEW TECHNOLOGIES

WHERE TO CARRY OUT SUBSEA BOOSTING OR PROCESSING?

1

2

3

1

2

4

MULTIPHASE PUMP

RISER BASE SYSTEM

PUMP OR GAS LIFTSUBSEA

SEPARATOR

EXISTING EXPORT

PIPELINE

GAS LIFT IN WELLS

DOWNHOLE PUMP

FPSO

PLATFORM HOSTPLATFORM HOST

Page 4: L10 - NEW TECHNOLOGIES

In dummy well

At mud line

Page 5: L10 - NEW TECHNOLOGIES
Page 6: L10 - NEW TECHNOLOGIES

Well fluid

SMUBS - Subsea Multiphase Booster Station for Draugen field, AS Norske Shell

Drive fluid

Page 7: L10 - NEW TECHNOLOGIES
Page 8: L10 - NEW TECHNOLOGIES

Multi-Booster;A twin-screw Pumping Principle

Positive displacement by use of twin-screw or moyno pumps

∆p = f(1/∆V)

Page 9: L10 - NEW TECHNOLOGIES

Subsea MultiBooster -Data below: for the as built Demo 2000

Possible duties:

• Multiphase boosting

• Wet gas compressor

Design Data DEMO 2000:

• Flow: 940 m3/h

• Diff. press: 40 bar

• Duty: Wet gas compression

Main Technical Features:

• Design press.: 250 barg

• Water depth: up to 1500m

Page 10: L10 - NEW TECHNOLOGIES
Page 11: L10 - NEW TECHNOLOGIES
Page 12: L10 - NEW TECHNOLOGIES

Subsea Booster Projects

• Shell, Draugen(1 × 750 kW Water Turbine)

• Shell / Statoil, ELSMUBS(1 × Electric Motor 1 MW)

• Statoil, Lufeng(5 × Electric Motor 400kW)

• BP, ETAP(2 × 900 kW Water Turbine)

• Mobil, Topacio(2 × 860 kW Electric Motor)

• Norsk Hydro, Troll C Pilot(1+1 × 1.600 kW Electric Motor)

Page 13: L10 - NEW TECHNOLOGIES

BP ETAPS FIELD

Page 14: L10 - NEW TECHNOLOGIES
Page 15: L10 - NEW TECHNOLOGIES

History of Subsea Processing

Category Projects Operators Year Technology Tie-back

Water depth

Zakum ADMA (Total Partner)

1970 Subsea separation w diver assist. 4 km 22 m

Highlander Texaco 1985 Subsea separation & pumping 0 km 128 m Argyll Hamilton Brothers 1988 Subsea separation BOET 0 km 120 m

Gas / Liquid separation

VASPS (Marimba)

Petrobras 2001 Separator & pumping in dummy well

1 km 395 m

HC / Water separation

Troll C Norsk Hydro (w Total)

2000 Gravity separator & WI pump 3 km 340 m

Draugen Shell 1994 1 MPP (turbine) Framo 6 km 270 m Lufeng Statoil 1997 5 booster pumps Framo 0 km 330 m Machar BP 1999 2 MPP (turbine) Framo Never installed on site Topaccio Exxon Mobil 1999 2 MPP Framo 8 km 500 m

Mudline pumps

Ceiba Hamerada Hess 2002 2 MPP Framo 7 km 750 m Lihua Amoco 1996 25 pumps 0 km 300 m Otter Total 2002 5 pumps 21 km 184 m

Downhole pumps

Page 16: L10 - NEW TECHNOLOGIES

BOET SUBSEA SEPARATOR -INSTALLED ON ARGYLL FIELD AT ITS END OF LIFE

KBS - Kvaerner Booster Station Centrifugal Compressor Prototype

Technical:1200 hrs tests (submerged)

• Nuovo Pignone centrifugal compressor

• 8 stage• 850 kW• 16 000 rpm

• Maag epicyclic gear• Loher motor of

• 6.6 kV• 1800 rpm

Testing included operation as wet gas compressor

Page 17: L10 - NEW TECHNOLOGIES

Sump

Sand Cyclone

Liquid Sump

Pump Motor

Separator Joints

Inlet Hdyrocyclone

Wellhead Fluids In

Gas Scrubber

Electric Power Supply

Gas Out

Oil Out

LIQUIDS OUT

GAS OUT

TANGENTIAL INLET

UPPER SECTION OF UNIT

VASP UNIT (Vertical Annular Subsea Separation)

Page 18: L10 - NEW TECHNOLOGIES

Vertical Annular Subsea Separation( VASPS )

• THE FLUID FROM THE WELLS IS SEPARATED INTO A GAS AND LIQUID PHASES

• THE SEPARATED GAS NATURALLY FLOWS IN A DEDICATED LINE TO THE SURFACE FACILITIES UNDER ITS OWN PRESSURE

• THE LIQUID IS PUMPED OUT OF THE VASPS INTO A DEDICATED LINE BY AN ESP

TEST RESULTS FROM MARIMBA FIELD, BRAZIL

5

10

0

15

20

25

30

35

40

45

50

8 million

7 million

6 million

9 million

10 million

4 million

3 million

2 million

1 million

5 million

Produced GasBbl/day 1000’s OilScf/day

Pre VASPS With VASPS0

Gas Lift Gas

Note pre VASPS oil production of 35,000 bbls / day with gas Lift. After VASPS 44,000 bbl / day with no need for gas lift

Page 19: L10 - NEW TECHNOLOGIES

TROLL PILOT - UPDATE

• Operational 17th May 2000

• Typical Performance - 23,900 bopd Multiphase Flow Separated into :-

- 16,350 bopd Oil- 7,550 bopd Water

• After June Water Injected using Injection Pump

• Quality of Separation Within Prescribed Limits

- About 144 ppm Oil in Water (design Max 1000 ppm)

• During Operation some 80% of the Water in the Oil Stream is Removed

• Late in 2000 the Equipment experienced some Mechanical Problems, this was notto do with the Fundamentals of the Process.

• Key Technology Areas

- Separator with Novel Inlet Device (semi-Cyclone) which reduces Momentum in theWellstream gradually such that it Prevents the Formation of small Droplets whichwould Reduce the Efficiency of the Separation Process.

- Control of the Oil / Water Interface. Monitoring based on Nucleonics and ElectricSensors Control the Speed of the Injection Pump.

UPRDATE - PHASE 2

• The connector problem took 10 months to fix.• In August 2001 the system was restarted and has works without problems since

then.• It is typically operating at up to 70,000 bopd input fluids, the separated water (60 to

80%) has an oil level of some 100 ppm.

Page 20: L10 - NEW TECHNOLOGIES

Typical concept : Gravity Separation

To pipeline

12” headerWell fluid

PTLT

To water injectionwellsProduced water

injection pumps

3-phaseseparator

TT

Multiphase booster pump

PT PT

PTPTFT

Reference : Troll pilot outlet water cut less than 10%oil in water less than 700 ppm

Page 21: L10 - NEW TECHNOLOGIES
Page 22: L10 - NEW TECHNOLOGIES
Page 23: L10 - NEW TECHNOLOGIES
Page 24: L10 - NEW TECHNOLOGIES

SUBSEA POWER DISTRIBUTION SYSTEMS

Page 25: L10 - NEW TECHNOLOGIES

KING FIELD – GoM- DEEPWATER OIL BOOSTER PUMP

King is now one of three fields producing from the Marlin TLP and represents more than half of Marlin TLP production.

Page 26: L10 - NEW TECHNOLOGIES
Page 27: L10 - NEW TECHNOLOGIES

TORDIS FIELD SUBSEA SEPARATION BOOSTING & INJECTION

Page 28: L10 - NEW TECHNOLOGIES

Layout of the Tordis improved oil recovery project

Page 29: L10 - NEW TECHNOLOGIES

The Tordis discoveries have all been developed with subsea installations tied back to the Gullfaks C platform.

The subsea separation station is equipped with two multiphase flow meters.

Page 30: L10 - NEW TECHNOLOGIES
Page 31: L10 - NEW TECHNOLOGIES
Page 32: L10 - NEW TECHNOLOGIES
Page 33: L10 - NEW TECHNOLOGIES

LIR1 VLT1

CRA1 ORQ1

ROS2ROS3

ROS1JCT1

JAS1

JAS2GIR2

GIR1

DAL3

ANT1

TUL1

MAG1

CML1

ACA1

PLT1

GAL1 CRM1

ZNA1PRP1HOR1

VIOLETA

TULIPAANTURIO

LIRIO

CRAVO

ROSA2

ROSA1

ORQUIDEA

JASMIMGIRB DALIALOWER

DALIAUPPERCAMELIA

PLD1

BLOCK 4BLOCK 3

BLOCK 33 BLOCK 18

BLOCK 16

BLO

CK

32

120 000 140 000 160 000 180 000

DAL5DAL1 DAL4

DAL2

1000 800

6001200

400

1400

18001600

PERPETUA

UP-MIOC

KIAME

BLOCK 179 140 000

9 160 000

9 180 000

9 200 000

200 000 220 000

ACA1

ZNA1PRP1

HOR1

UP-MIOC

PERPETUA

HORTENSIAZINIA

ACACIA

20 km

PAZFLOR DEVELOPMENT - Block 17, AngolaFIELDS - HORTENSIA, PERPETUA, ZINIA & ACACIAWATER DEPTH - 650 – 1300m

Page 34: L10 - NEW TECHNOLOGIES

Upper Miocene (Perpetua-1 : UM2)20°API, d=0,93,TAN=1.96 mg KOH/gGOR # 50 Sm3/Sm3

High viscosity (up to µ=500 cp at 20°C)Risks of calcium naphtenate, emulsions, foamingRisk of hydrate (no risk of paraffin)Water injection

Oligocene (Acacia-1 : O9)37°API, d=0,84, TAN=0.2 mg KOH/g.GOR # 250 Sm3/Sm3

Viscosity µ=20 cpRisk of sulphate of barium ==> desulphatation if Water InjectionRisk of hydrate and paraffinWater & Gas injection

Reservoir Burial Thickness Temp. Pressuredata (m) (m) (� ) (bara)Upper Miocene(UM1,UM2,UM3)O9 & O9w(Acacia)

1100 64 200

2000 110 350

10 ? 30

40 ? 60

NOTE – TWO TYPES OF OIL

Page 35: L10 - NEW TECHNOLOGIES

UM Area - Overall field development – Production Network

MIOCENE OLIGOCENE

« Conventional » DevelopmentDual line production loop

XT XT XT XT

P 10

XT XT XT XT

P 20

P 30

XT

XT

XT

XT

XT XT

P 40

XT

XT XT

XT

XT

XT

XTXTXT

XT

XT

Subsea Gas/Liquid SeparationSingle production line

Page 36: L10 - NEW TECHNOLOGIES

PAZFLOR DEVELOPMENT

There will be three subsea separation systems provided by FMC following the company's success on Tordis.


Recommended