PhaseWatcher Vx SubSea for HPHT

Copyright 3-PHASE Measurements AS 2010

Rolf Rustad

Manager of Product Development and Technology

PhaseWatcher Vx SubSea for HPHTA New Deepwater Multiphase and Wet Gas Flowmeter for HPHT


Outline

• Vx Technology Fundamentals

• PhaseWatcher Vx SubSea 15k

– Design Specifications

– Design

– Use of Standards and Codes

– Qualification

– Flow Testing


Inlet

Outlet

Liquid

Gas

Flow m ixe r

Gamm a source

Measur ing section

ÐP m easurem ent

Ven turi section

Tem perature

sensor

G am m a

fraction m eter

Pressu reM easu rem en t

More than 400 man-years of R&D since

1989

Origins of the Vx


Vx Multiphase Flow Meter - Components

Flow ComputerGamma detector

Gamma source

Ba133

Venturi section

P transmitterPressure transmitter

Blind-T

Temperature

transmitter


SIZE 52 SIZE 65 SIZE 88

Design pressure 5 K 10 K 15 K 5 K 10 K 15 K 5 K 10 K 15 K

Design temp - 46 °C - + 200 °C - 46 °C - + 200 °C - 46 °C - + 200 °C

Max water depth 3500 m 3500 m 3500 m

Materials Duplex 22% + 25% Cr

Inconel Duplex 22 and 25 %Cr

Inconel Duplex 22 and 25 %Cr

Inconel

Sour service Yes Yes Yes

Connection

SPO 1500

SPO 2500

SPO HOLD

SPO 1500

SPO 2500

SPO HOLD

SPO 1500

SPO 2500

SPO HOLD

API API API API API API API API API

Clamp Clamp Clamp

Weld prep Weld prep Weld prep

Redundancy Standard Standard Standard

Retrievability Optional Optional Optional

PW Vx SS Type F – Design Basis


Additional Requirements and Specs

• Multiphase and Wet Gas• Minimize size and weight• Optimize thermal design – cool down• Modular design, easy to re-arrange• ”Hot standby” option • Minimize power consumption

– One DAFC: 24W avg. 30W peak (5 ms)– Hot Standby DAFC: 17W avg. 20W peak (5ms)

• Requirements and design reviewed with key cutomers and EPC contractors


Venturi section w. 15kpsi

API flange

Gamma Detector Housing

Transmitter Pod x2

Oil Filled Hose

PCom Pod

Connector x2

Gamma Source Housing

(hidden)

PW Vx SS Type F - Components

With ROV Shield


Sealing

• Process Barriers

– Primary Sealing – Metal C-ring, Inconel 718 gold plated

– Secondary Sealing – Metal C-ring, Inconel 718 gold plated

• Seawater Barrier

– Primary Sealing – Metal C-ring, Inconel 718 silver plated

– Secondary Sealing• Axial: Dual o-ring with Support ring (Viton or Kalrez)

• Face Seal: Single o-ring with Support ring (Viton or Kalrez)

– Pressure Compensated• Oilfilled hose harness: dual axial o-rings


Sealing Example: Gamma Detector Housing

Primary

Seawater

Primary

Seawater

Secondary

Seawater

’Axial’Secondary

Seawater

’Face’

Secondary

Seawater

’Face’

Primary

Process

Secondary

Process

Secondary

Process

Secondary

Process

Seawater Pressure

Compensated,

Oilfilled

Secondary

Process


ROV Protection


Instrumentation and Electronics


Retrievable Power & Communication Pod (PCom)


Retrievable Power & Communication Pod (PCom)

800

1300kg


Qualification


Applicable Standards and Codes

Qualification

Testing

Design Hydrostatic

Testing

Hyperbaric

Testing

Documentation Certification Material

Selection

ASME VIII Div

2-2007

NA* Design

according to

part 4 & 5

1.25 x (Smtest/

SmDesign temp) *

Pdesign

(Eg duplex at

150C > 1.3 x

Pdesign )

NA DVR issued by

DNV for design

drawings and

analysis report

97/23/EC PED

DNV certified

compliance

ASME IID

API 6A /

ISO 10423

Qualification

testing

according to

appendix F

Detailed

design

requirement

for analysis

by FEM not

defined in

code

1.5 x Pdesign NA PSL3/ 3G

ISO 13628-6 Electronics and

Instrumentation

EQ

11.2.2

External

hydrostatic

test 1.1 x

Pdesign

PSL3/ 3G

97/23/EC PED NA Min. 1.43 x

Pdesign

NA Harmonised/

PMA**

NACE MR0175/

ISO 15156/

NA NA NA NA EN 10204 -3.1

certificate MUST

state compliance

with requirements

for heat treatment,

condition and

hardness e.g.


Strength Calculation

Method and Load Cases as per ASME VIII Div.2

Extensive Finite Element Analysis

3rd Party Design Verification

Certification according to PED


Instrumentation and Electronics

• Qualification according to ISO-13628-6

• Environmental Stress Screening

according to ISO-13628-6

• Redundance for reliability

• DAFC – Data Aquisition Flow Computer

• Power Supply

• Communication Cards

• Transmitters

• Pressure

• Differential Pressure

• Temperature Transmitters

• Connectors


Qualification of Ceramic Window

Proof Test at 2.5 x Pdesign (API 6A 4.3.3.5.3)

Pressure and Temperature Cycling to Pdesign / Tdesign

(API 6A F.1.11)

Pressure Cycling (fatigue) Pdesign, 200 cycles

(ISO 13628-4)

Gas Pressure Test at Pdesign


Qualification of Electric Feedthrough

Electric

Feedthru

-60-40-20020406080100120140160180

0

200

400

600

800

1000

1200

1400

0,00 10,00 20,00 30,00 40,00 50,00 60,00Pressure (Barg)

0200400600800

1000120014001600180020002200240026002800

0,000,100,200,300,400,500,600,700,800,901,00

Proof Test SN5333EH

Pr…

Proof test at 2.5 x Pdesign (API 6A 4.3.3.5.3)

Pressure and Temperature Cycling to Pdesign / Tdesign

(API 6A F.1.11)

Hyperbaric Pressure Test to 400bar (3500m WD)


Full Assembly Testing

Hydrostatic Pressure Test at 1.5 x Pdesign

Gas Pressure Test at Pdesign

Hyperbaric Pressure Test

Performance Verification Testing

Cool Down Testing


Cool Down Testing

Seawater: 2.8 degC

Start Temp: 67degC

End Temp: 20 degC

Cooldown Time: 16 hrs. Measured in drained Venturi


Flow Loop Test Method

• Framo Engineering Flow Loop at Flatøy, Norway

• Full 3-Phase Flow Loop

• Establish stable flow rate

• Measure during a flow period of 10 – 20 minutes duration, depending on GVF

• Compare average

– Volumetric flow rates, qliquid, qgas

– Volumetric fraction, WLR


Liquid Flow Rate Relative Deviation vs GVF

Liquid Rel. Err. vs GVF

-15

-10

-5

0

5

10

15

50 60 70 80 90 100

GVF (%)

Liq

.Rel.

Err

(%

)

Acceptance limit Acceptance limit PW Vx SS 52 Type F


Liquid Flow Rate Deviation vs. Liquid Rate

Liquid Flow Rate - Absolute Error

-5

-3

-1

1

3

5

0 20 40 60 80 100

Reference Qliquid (m3/h)

Qli

qu

id -

Ab

so

lute

Err

or

(m3/h

)



Gas Flow Rate Relative Deviation vs. GVF

Gas rates up to 450Am3/h

Gas Flow Rate : Relative Error vs. GVF

-25

-20

-15

-10

-5

0

5

10

15

20

25

50 70 90

GVF (%) - measured@PW

Qg

as -

Re

lati

ve

Err

or

(%)



Water Liquid Ratio Deviation – Absolute %

WLR : Absolute Error vs. GVF

-20

-15

-10

-5

0

5

10

15

20

50 60 70 80 90 100

Reference GVF (%)

WL

R -

Ab

so

lute

Err

or

(%)



Commercial Status

• Product Launch in September 2009• 8 units in manufacturing for delivery in 2010

– Project #1 (2 units)• P = 15,000psi T = 121°C WD = 5,600ft

• 22Cr Duplex Weld connection


• Inconel 625 Weld connection (retrievable)


• 22Cr Duplex Weld connection


Thank you !

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PhaseWatcher Vx SubSea for HPHT

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