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DT5 Monitoring Applications•

Flow Rate Measurement•

Water Injection/Breakthrough Monitoring•

Vacuum Insulated Tubing MonitoringGas Production

•

Water Production•

Low Flow Rate Measurement•

Flow Behind Casing•

Gas Lift Valves9 Steam Flood•

SAGD•

Inter Well Connectivity;~ Chemical Injection Monitoring

2

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Confidentiz

Havantages or upticai sensorsEkk

No down-hole electronics•

Immune to shock/vibration andelectromagnetic interference•

igh reliability•

igh temperature performance >300 Deg C•

Extremely small <500m - easily deployed•

Point and distributed sensorsMultiplexing capabilities

3

idential

Distributed Temperature Installation OptionsSingle Ended

Double Ended

Check Valve

4

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UIL

MR

SE

DE

0.2 C Resolution 0 .15 C

0.5 C Accuracy 0.25 CTypical performance based upon a 20minute measurement period

reservoir z)urveiiiance basicsDrilling infill wells and sidetracks canincrease your recoverable reservesThe average well has some form ofreservoir surveillance performed on it lessthan once every two years

Reservoir surveillance is key tounderstanding the performance of yourreservoir

optimum placement of infill and sidetrackwells -information on single well performance

6

lronti n uous i"ceservoi iSurveillance

r Shifts the major cost of surveillance from OPEXto CAPEX (very small proportion of CAPEX)

Provides data in real time - without a 2 year wait(events can be observed as they happen - and animmediate response taken)

> No well intervention required (safety, no loss ofproduction)

Reliability of electrical sensors has been themajor drawback so far (they need to last 5+ years)

7

50

45

vvaLVr injectivnioreaKinrvugnMonitoring

0 400 800Depth (m)

maenuai

1200 1600

WarmbaInjection

k

Geothermal.

gradient Turn around sub

ar0a~ 40LYCt

35Q.E01-- 30

25

Measured vs Predicted Temperatures

75

U

a G5

W

3n

Q. 55EwF-

452700 3200 3700

Depth (m)

02700

GeothermalThermal modelPorosityTernperature

Geothermal Gradient

4200

Largeinflow at theheel of the -r well

Water flow

Total flow

Waterproduction at -

the toe

wE30

w

0.0

3200 4200Depth im

Perforations

9

9500

Monitoring Gas Wells2 .59MMscfd 9.55M Mscfd

Geothermal -40 Deg F Calculated 9.5MMscfd Flow Calculated 2.5MMscfd Flow Gamma Ray

10000

10500Depth (ft)

nfidential

1000

Boo

0

11000

200

350

340La1

330L

y 320QEWH 310

300

10

Steamflood Observation Wells400

LLD) 3000

0 400 800

Depth (ft)

ifidentii

Measurements over time

1200 1600

Steamflood Injectors/Producers

11 ifidentii

500

475

450

425

400

375

350

325

300

275

250 I'~

ii ~p225 V

200

175 j

150 h

125

100

75

0

100

200

300

400

500

600

700

800

900

1 2

0

90 -

180 -

270 -

360 -

450 -

. . . . . . . . . . .

540 -

Undisturbed* Steam 10 min

Steam 30 minSteam 75 min

•

Steam 140 min•

Steam 24 hrs

+

I .

900

I

I

I0.0

100.0

200.0

300.0

400.0

500.0Temperature (deg F)

500450

IM 400CL) 350

„ 300250

;5 200

a 150E 100F- 50

00

Confidenti ;

oaeiiing

Temperature into formation

ERNE

RuMIN1 '14 ∎ ~`

i I i i i-101411rrtes-30lnrrtes-75 tvinrrtes-140 tvinrrtes-24 His

5 10

Depth (ft)Is 20

1 3

SAGD Production

Steam InjectionPeriod

220210200190180170

150140130120110100908

,C,5

198n

-VO 'I 1

00CD C,4Q T

~fN T

~'

T

o

Depth

d

R0)mCEa)H

∎ 210-220

o200-210

o190-200

0180-190

0170-180

0160-170

0150-160

• 140-150

• 130-140

o120-130

• 110-120

0100-110

• 90-100

080-90

o70-80

• 60-70

050-60