Reporte Imp Multifasico

MULTIPHASE FLOW METERING:THE MEXICAN EXPERIENCE

Instituto Mexicanodel Petroleo

M. I. Noel E. SantamariaIng. Sandro F. Mancilla

Texas A&M Multiphase Measurement& Production Testing User Roundtable

Present the Mexican Experience in Implementing

Multiphase Flow Metering in Well Testing Operations.

OBJECTIVE



MULTIPHASE FLOW METERING LOCATIONS

Pacific Ocean

Pol TFPlatform

Akal DPlatform

Poza Rica XBattery

Samaria IIBattery

ComalcalcoSector



MPFM Installation in Samaria II Battery



Man

ifold

MPFM

Test Header

L P

Gas Test Tank 1500 bl

TestSeparator

Test Tank 3000 bl

Liquid

Samaria II Battery



Samaria II Field 21 wellsIride Field 2 wells + 2 streams

Wellcomp MPFM components:Fluid conditioner.Coriolis mass flow meter.Vortex shedding flow meter.Fluid fraction analysis chamber.Local computer and data acquisition.

Installed in 1994.11 wells were tested during On Site Acceptance Tests.Disassembled in 1997.

Qo (m3/d) = 37 - 1012

Wcut (%) = 1.1 - 51.3

Qg (m3/d) = 21746 - 117,206

GOR (m3/m3) = 100 - 2,000

P (kg/cm2) = 4.0 - 5.5

T (°C) = 33 - 55

Operation Conditions Fluid Properties

SGo : 0.86 - 0.90

SGg : 0.72 - 0.82

SGw : 1.05 - 1.09

Samaria II Battery



Comparison of Liquidand Oil Flow Rates in

Samaria II Battery

0 200 400 600 800 1,000 1,2000

200

400

600

800

1,000

1,200

Reference Liquid Rates (m3/d)M

PFM

Rea

ding

(m3/

d)



0 200 400 600 800 1,000 1,2000

200

400

600

800

1,000

1,200

Reference Oil Rates (m3/d)

MPF

M R

eadi

ng (m

3/d)

Comparison of Gas andWater Flow Rates inSamaria II Battery

0 20,000 40,000 60,000 80,000 100,000 120,000 140,0000

20,000

40,000

60,000

80,000

100,000

120,000

140,000

Reference Gas Rate (m3/d)

MPF

M R

eadi

ng (m

3/d)



0 20 40 60 80 100 120 140 1600

20

40

60

80

100

120

140

160

Reference Water Rate (m3/d)

MPF

M R

eadi

ng (m

3/d)

MPFM Installation in Poza Rica X Battery



Poza Rica Field 16 wellsMecatepec Fiel 35 wellsManuel Avila Field 10 wells

Wellcomp MPFM components :Fluid conditioner.Coriolis mass flow meter.2 Vortex shedding flow meter.Fluid fraction analysis chamber.Local and remote data acquisition.

Installed in 1997.30 wells were tested during On Site Acceptance Tests.Operating satisfactorily.

Poza Rica X Battery



Qo (m3/d) = 5 - 60

Wcut (%) = 2 - 70

Qg (m3/d) = 200 - 17,600

GOR (m3/m3) = 4 - 780

P (kg/cm2) = 6.5

T (°C) = 65


SGo : 0.86 - 0.97

SGg : 0.62 - 1.40

SGw : 1.01 - 1.06

Oil Visc.: 13.1 - 33.37 cp

Poza Rica X Battery



Comparison of Liquidand Oil Flow Rates inPoza Rica X Battery

10 20 30 40 50 60 7010

20

30

40

50

60

70

Reference Liquid Rates (m3/d)

MPF

M R

eadi

ng (m

3/d)



0 5 10 15 20 25 30 350

5

10

15

20

25

30

35


MPF

M R

eadi

ng (m

3/d)

Comparison of Waterand Gas Flow Rates inPoza Rica X Battery

0 1,000 2,000 3,000 4,000 5,000 6,000 7,0000

1,000

2,000

3,000

4,000

5,000

6,000

7,000

Reference Gas Rate (m3/d)

MPF

M R

eadi

ng (m

3/d)



0 10 20 30 40 500

10

20

30

40

50


MPF

M R

eadi

ng (m

3/d)

MONITORING AND

CONTROL STATION

MORA BATTERY

PIJIJE BATTERY

LUNA MODULARBATTERY

REMOTE MANIFOLD SEN NORTE

REMOTE MANIFOLD YAGUAL

REMOTE MANIFOLD CHINCHORRO

REMOTE MANIFOLD CHIPILÍN

REMOTE MANIFOLD BELLOTA 114

REMOTE MANIFOLD LUNA NORESTE

REMOTE MANIFOLD

CAPARROSO

56 Km

46 Km25 Km

21 Km

28 Km

19 Km

33 Km

Gathering Batteries and Manifolds in Comalcalco Sector



MPFM Installation in Comalcalco Sector



Man

ifold

MPFM

Test Header

H P L P

LP GASHP GAS

PIPE LINE TO OXIACAQUE

Test Tank 5000 bl

TestSeparators

* Two Mobile Units.

* Four Fluenta MPFM 1900 V.

* Remote Communication Equipment.

* Monitoring and Control Center

* Auxiliary Services.

Multhiphase Flow Metering System Components



* 69 wells tests per month.* 1656 well tests during a two years period.* Facilities

Sen Norte Remote Manifold 7 wellsChinchorro Remote Manifold 3 wellsMora Remote Manifold 11 wellsBellota 114 Remote Manifold 9 wellsYagual Remote Manifold 2 wellsPijije Gathering Battery 11 wellsLuna Modular Gathering Battery 11 wells + 1 stream.

22 wells were tested during On Site Acceptance TestsThe service began in 1997 and it concluded satisfactorily in 1999 Another contract between Pemex and FMC is in negotiation

Scope of the Services in Comalcalco Sector



Qo (m3/d) = 9 - 1269

Wcut (%) = 1.3 - 70

Qg (m3/d) = 7416 - 1,035,000

GOR (m3/m3) = 123 - 1,318

P (kg/cm2) = 12 - 86

T (°C) = 30 - 110


SGo : 0.80 - 0.90

SGg : 0.71 - 0.91

SGw : 1.00 - 1.11

Oil Visc.: 2.1 - 8.6

Comalcalco Sector



Comparison of Liquidand Oil Flow Rates in

Comalcalco Sector

0 100 200 300 400 500 600 7000

100

200

300

400

500

600

700

Reference Liquid Rates (m3/d)

MPF

M R

eadi

ng (m

3/d)



0 100 200 300 400 500 600 7000

100

200

300

400

500

600

700


MPF

M R

eadi

ng (m

3/d)

Comparison of Gasand Water Flow Ratesin Comalcalco Sector

0 200,000 400,000 600,000 800,0000

200,000

400,000

600,000

800,000

Reference Gas Rate (m3/d)M

PFM

Rea

ding

(m3/

d)



0 5 10 15 20 250

5

10

15

20

25


MPF

M R

eadi

ng (m

3/d)

MPFM Installation in Offshore Platforms



MPFM

Gas

Liquid

Horizontal Test Separator Test Header

Akal - D Platform Pol TF Platform

Framo MPFM components: Multi Fluid MPFM components:Flow mixer Venturi meterVenturi meter Microwave probesGamma-ray fraction meter Gamma-ray densitometer

Installed in 1996 Installed in 1998Reinstalled in Chac-A Ooperating but...

platform in 2000Not operating satisfactorily

Never were tested with a conventional well testing systems

MPFM in Offshore Platforms



Summary of Multiphase Flow Metering Facilities

Year Site Brand/Manufacturer Implementation

1994 Samaria II Battery Wellcomp/Paul Munroe Engineering (1) Purchase

1996 Akal-D Platform Framo/Framo Engineering (2) Purchase

1997 Poza Rica X Battery Wellcomp/Paul Munroe Hydralift (3) Purchase

1997 7 sites in Comalcalco Fluenta/Fluenta a.s. (4) Turnkey well testing service

1998 Pol T.F. Platform MultiFluid/MultiFluid (5) Purchase



(1) Disassembled (2) Now installed in Chac-A platform. Not operating satisfactorily(3) Operating (4) Service concluded satisfactorily (5) Operating but..

The portable MPFM allowed measurement of many wells production, where it wasnot feasible to use conventional well testing systems.

The use of MPFM through a turnkey well testing service demonstrated to be asuccessful option for well testing operations in Mexico.

MPFM are not attractive alternatives for well testing in Pemex if reliability cannotbe confirmed.

Because of operational problems of installed units, probably only few MPFM willbe installed in Mexico in the coming years.

Conclusions



Documents

Reporte Imp Multifasico