Subsea Multiphase Flow Meter For Production … Olsvik - Roxar.pdf · Total Moho (8) Total AKPO...

Subsea Multiphase Flow Meter For Production Optimalisation14.06.07 by Kenneth Olsvik

INTERPRETATION MODELING SIMULATION WELL & COMPLETION PRODUCTION & PROCESS

Lack of measurements subsea

In 2004 Statoil, Norsk Hydro and NPD looked at difference in hydrocarbon recovery rate in subsea and topside completed wells

Topside : 59%

Subsea: 41% Why a 15-20% difference?

Reassons;

-Accessebillity- low maintenance subsea wells

-Lack of data for reservoir optimization

Statoil’s goal within 2008;

Topside : 70%

Subsea: 55%Roxar Confidential June 2007


OIL

GAS

WATER

SAND

Controlling well behavior

Roxar Confidential June 2007


OIL

GAS

WATER

SAND

Choke back

Controlling well behavior



Superior reliability

33 yrs

MTTF

96 yrsStationary meter body

MTTFSRC version

Retrievable canister

31 yrsStationary meter body and electronics canister

CBV version


Full redundancy = ”Two meters in one”

Dual flow computerNon-gammaback-up

Redundancy onall transmitters

Dual ROV connectors

Dual power supply



Replace electronics without stopping production



Comparison of MPFM SRC version vs Fully RetrievableCost and benefits

SRC version

- Integrated part of the well, no extra valves or connectors

- Light weight, enables integration into jumpers

- No production loss during intervention (1-3hrs change out time of canister), no need for shut in

- Redundancy on all parts, no need to change out radioactive source

- MTTF of stationary part 96 years

Fully retrievable

- At least 3 extra subsea valves required + ROV connector (costapprox. USD 300,000)

- Radioactive source must be replaced within 5-7 years (intervention)

- Intervention cost is high and production loss for 24-48hrs eq USD250,000 – 500,000

- Increased cost/weight/size of manifold (USD millions)



MPFM CBV – Jumper installed



MPFM SRC installed in Manifold


K-lab testing (4 tests in 2006)



m3/day3m3/day2,45Water Changes

abs Vol%< 0,005abs Vol%< 0,01 Water Detection Accuracy

Sm3/day10 000 000Sm3/day4 000 000Gas

Ormen LangeSnøhvit

Water Measurement Accuracy

SNØHVIT

Hammerfest

CMD 3 CO2 INJECTIONLINE 8" ID

TEMPLATE F

PROCESSEQUIPMENTSUBSEA

CONTROLBUILDING

CDU 1

7 945 000 N

CO2

7 942 500 N

7 940 000 N

7 937 500 N

7 935 000 N

7 932 500 N

502

500

E

505

000

E

507

500

E

510

500

E

512

500

E

28" PRODUCTIONFLOWLINE

PHASE 1 SNØHVIT/ALBATROSS

CMD 2

14" INFIELD FLOWLINES

SPARE UMBILICALCONNECTION

TEMPLATE N

MAIN UMBILICAL

TEMPLATE E

TEMPLATE D

CORROSIONMONITORING DEVICE PLEM

MELKØYA

ALBATROSS

UMBILICALTO ASKELADD

TO ASKELADD

2 x 4" ID MEG & SERVICE

8" CO2 INJECTION

MEG TOASKELADD

MEG COUPLERSERVICE COUPLER

CMD 1

BUICS DYNAMIC UMBILICAL


“… the Roxar subsea Wetgas meter (…) reported formation water breakthrough on several wells (…) avoiding catastrophic water break-through and loss of the wells. Because of the Roxar subseaWetgas meters, we saved major costs related to such loss of wells.”

Burullus Rashpetco1100 meters Water Depth

Formation Water Detection


Ormen Lange, North Sea

1100 meters Water Depth

Water Measurement

upstream


Latest subsea projects

Wetgas:Australia (8+6)Statoil NCS (4)Hydro Ormen Lange (6 +)Burullus Egypt (8)Reliance / Aker Kvaerner (19)Rashpetco Egypt (3)

Multiphase:Total Rosa (12)Total Moho (8)Total AKPO (36)ExxonMobil Angola (2)ExxonMobil Angola (10)ExxonMobil Angola (9)Statoil Heidrun (3)Statoil Åsgard (8)Statoil Tordis IOR (3)Woodside Vincent (2)Wollybutt ENI (2)



Clients of Roxar (subsea multiphase/wetgas meters)

77Petrobras

601473342Others

16142Woodside

59133592Total/Elf

22BP

8323Shell

13310Anadarko

1919Reliance

7846413447Statoil

56

2005

64

9

2006

83

12

2007

28519854All

232ExxonMobil

All200420031995

- 2002Client


Subsea Multiphase Flow Meter For Production … Olsvik - Roxar.pdf · Total Moho (8) Total AKPO...

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