Oce-1 PVT Final Report B

8/4/2019 Oce-1 PVT Final Report B

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Reservoir Fluid Study

for

Hocol, S.A.

Ocelote-1 Well

RFL 0703054

Core Laboratories

Cra 39 Nro. 168-52, Bogot, Colombia

Tel: +57 (1) 6740400 Fax: +57 (1) 6730060 Web: http://www.corelab.com

The analyses, opinions or interpretations in this report are based on observations and material supplied

by the client to whom, and for whose exclusive and confidential use, this report is made. The

interpretations or opinions expressed represent the best judgement of Core Laboratories Venezuela,S.A. (all errors and omissions excepted); but Core Laboratories Venezuela, S.A. and its officers and

employees assume no responsibility and make no warranty or representations as to the productivity,

proper operation or profitability of any oil, gas or any other mineral well formation in connection with

which such report is used or relied upon.


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Core Laboratories

Cra. 39 Nro. 168-52

Bogot, Colombia

Tel: 57 1 6740400

Web: http://www.corelab.com

Sincerely,CORE LABORATORIES

Simn Rodrguez

SupervisorReservoir Fluids Laboratory

January 30th, 2007

Perenco Colombia, LTD.

Bogota, Colombia.

Attention : Eng. Jina Martinez

Subject: Reservoir Fluid Study

Well: Candalay-1

Formation: Carbonera C7

Interval: 6,028' - 6,040'

File: 0603147

Dear Eng. Martinez:

Two wellhead samples from the subject well were collected on August 26th of 2006 by Core

Laboratories representatives and delivered to our fluid laboratory in Bogot for use in the

performance of a Reservoir Fluid Study. The samples were transported to the laboratory

whereupon sample validation and analysis commenced.

The final report of the Reservoir Fluid Study is presented in the following pages.

It has been a pleasure to perform this study for Perenco Colombia, LTD. Should any

questions arise or if we may be of further service in any way, please do not hesitate to

contact us.

April 20th, 2007

Hocol, S.A.

Bogot, Colombia

Attention : Eng. Larry Prent

Subject: Reservoir Fluid StudyWell: Ocelote-1

Formation:

Interval:

File: 0703054

Dear Sirs.:

Three bottomhole samples from the subject well were collected on December 16th of 2006

by Core Laboratories representatives and delivered to our fluid laboratory in Bogot for use

in the performance of a Reservoir Fluid Study.

Initial quality control checks were performed as soon as the samples were received and the

study proceded thereafter. Preliminary data was transmitted electronically during the

course of the study and the final report of this study is presented in the following pages.

It has been a pleasure to perform this study for Hocol, S.A. Should any questions arise or

if we may be of further service in any way, please do not hesitate to contact us.


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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Table of Contents

Section A - Summary of Analysis Methods and PVT Data Page

Summary of analysis methods...................................................................................................... A.1-A.3

Summary of PVT data................................................................................................................... A.4

Section B - Summary of Samples Received and Validation Data

Well information for bottomhole samples..................................................................................... B.1

Summary of samples received...................................................................................................... B.2

Section C - Compositional Analysis of Bottomhole Reservoir Fluid

Compositional analysis of bottomhole sample to C36+................................................................ C.1-C.2

Section D- Constant Composition Expansion (CCE)

Constant composition expansion data at 207 F.......................................................................... D.1

Graph of constant composition expansion data at 207 F............................................................ D.2

Section E - Differential Vaporization

Differential vaporization data........................................................................................... E.1

Graphs from differential vaporization data....................................................................... E.2

Differential vaporization data converted to surface separator conditions........................ E.3-E.4

Section F - Reservoir Fluid Viscosity Data

Reservoir fluid viscosity data........................................................................................... F.1

Section G - Separator Test Data

Data from separator test 1............................................................................................... G.1

Compositional analysis of gas sample from separator test............................................. G.2

Data from separator test 2............................................................................................... G.3

Compositional analysis of gas sample from separator test............................................. G.4

Section H - Appendix

Data used in gas compositional calculations................................................................... H.1

Data used in liquid compositional calculations................................................................ H.2

___________________________________________________________________________________________

Core LaboratoriesBogot, Colombia


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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Section A - Summary of PVT Analysis Methods and Data

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Summary of Analyses Methods

Sample Validation

The bubble point pressure at ambient temperature and free water content of each bottomholesample were determined as initial quality checks. From this quality control, the measured bubble

point pressures of the samples showed good agreement with one another and very little free

water was measured.

Heat Treatment

The selected bottomhole fluid sample was heated to 200F prior to subsampling for laboratory

tests to avoid potential wax deposition problems.

Pressurized Fluid Composition

Approximately 30 cc of pressurized fluid was flashed to atmospheric pressure at 120 F and

separated into its respective gas and oil phases. The evolved gas and residual liquid were

analyzed separately, using gas-liquid chromatography and recombined on a weight basis toproduce a C36+ weight percent composition.

Gas Compositions

Gas composition were measured using a "one shot" Varian 3800 gas analyzer using GPA 2286

method. The gas chromatograph utilizes 3 columns to clearly identify all of the eluted

components from N2, CO2 and C1 through C11+.

The chromatograph is calibrated weekly using air and synthetic hydrocarbon gas with a known

composition. The resultant calibration data is checked statistically against previous calibrations

prior to performing analyses on unknown samples.

Liquid CompositionResidual/stocktank liquid composition were measured using a Varian 3400 chromatograph. The

gas chromatograph utilizes a cold on column, "sandwich injection" technique to ensure that a

representative sample is injected and swept onto the column. The sample is run twice; first the

original fluid and then fluid spiked with n-tetradecane. This allows the laboratory to take into

account any heavy end (C36+) losses that may have occurred during the chromatographic run,

and make an accurate correction prior to reporting the liquid composition. The data obtained

from the gas chromatograph is in weight %. Calculations to mole% and the plus fractions

properties are described later.

The chromatograph for liquid samples is checked daily, using a gravimetric n-paraffin mix

containing a range of pure components from C8 through C36 and a synthetic gas-oil mix (D2887)

with known composition. The resultant calibration data is checked statistically against previous

calibrations prior to performing analyses on unknown samples.

A.1

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Summary of Analyses Methods, continuation

Calculation of Mole% Compositions and Plus Fraction Properties

The residue or stocktank liquid whole sample molecular weight and density are measured using

a cryscope and a PAAR densitometer respectively.

The mole% data is calculated using GPSA mole weight and density data, where individual

components are identified, from carbon dioxide through decanes. Katz and Firoozabadi data are

used from undecanes through pentatriacontanes. The residue mole weight and density values

are calculated so that the pseudo average mole weight and density are the same as the

measured values. This can lead to anomalous residue mole weights and densities where the

Katz and Firoozabadi values may not be suitable for the isomer groups detected.

Other alternatives are to use an assumed C36+ molecular weight and density value, use a linear

extrapolation technique for components from C10 to C35 to calculate the C36+ properties or to

utilise distillation analysis to produce a C11+, C20+ or C36+ residual oil fraction and physicallymeasure the molecular weight and density.

Constant Composition Expansion

A portion of the bottomhole fluid sample was charged to a high pressure visual cell at ambient

laboratory temperature. The sample was thermally expanded to the reservoir temperature and a

constant composition expansion was carried out during which the bubble point pressure at

reservoir temperature was determined. Pressure-volume data for the single phase and two

phase fluid were also measured. The density of the single phase fluid was determined by

weighing measured volumes pumped from the cell at 5000 psig. Density data for other

pressures were calculated using the volumetric data.

Differential VaporizationThis was carried out in a high pressure visual cell, at reservoir temperature. At several pressure

stages below the observed saturation pressure, the sample was stabilized. The gases evolved

were then pumped out of the cell and its volume, compressibility and gravities were determined.

The final stage was carried out at atmospheric pressure when the residual liquid was pumped

out of the cell and its volume, density and molecular weight were measured.

A.2

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Summary of Analyses Methods, continuation

Reservoir Fluid ViscosityLive-oil viscosity was measured in an electromagnetic viscometer at reservoir temperature.

Viscosity determinations were carried out over a wide range of pressures from above the reservoir

pressure to atmospheric pressure.

The measurements were repeated at each pressure stage until five or more results agreed to within

0.5%. The densities, obtained from the constant composition expansion and differential

vaporization tests, were used in the calculation of viscosities in centipoise.

Separator Tests

Finally, two single-stage separator tests were carried out using a pressurized test separator cell. A

portion of the bottomhole fluid sample, at a pressure above saturation pressure, was pumped into

the separator cell and stabilized at the pressure and temperature required for the first stageseparation. The gas evolved was pumped out of the cell and the volume and composition were

determined. The final stage was carried out at atmospheric pressure and separator temperature

and the density of the residual liquid was determined.

A.3

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Section B - Summary of Samples Received and Validation Data

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Reported Well and Sampling Information

Reservoir and Well Information

Field......................................................................... OceloteWell.......................................................................... Ocelote-1Reservoir Fluid......................................................... Black OilFormation.................................................................Current Reservoir Pressure .................................... 1645 psiaReservoir Temperature............................................ 173 F

Installation................................................................ *DST.......................................................................... *Perforated Interval .................................................. *

Sampling Information

Date sampled........................................................... 16-Dec-06Time sampled ..........................................................Type of samples....................................................... BottomholeSampling company................................................... Core LaboratoriesSampling Depth....................................................... 4127 ft. MD

Choke....................................................................... *Status of well............................................................ Shut-in

Bottomhole pressure................................................ *Bottomhole temperature........................................... *

Wellhead pressure................................................... *Wellhead temperature.............................................. *

Separator pressure ................................................. *Separator temperature ............................................ *

Pressure base.......................................................... 14.7 psiaTemperature base ................................................... 60 F

Separator gas rate................................................... *Separator oil rate ..................................................... *Separator gas-Oil ratio............................................. *Water flowrate.......................................................... *Gas gravity (Air = 1)................................................. *Supercompressibility factor...................................... *H2S.......................................................................... *BS&W....................................................................... *API Oil Gravity ........................................................ *

Comments:* Data not provided to Core Laboratories

18:15 - 19:45 Hrs.

B.1

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Summary of Samples Received

Bottomhole Samples

LaboratorySample Cylinder Sampling :- Bubble point :- Free water SampleNumber Number Pressure Temp. Pressure Temp. drained Volume BSW

(psia) (F) (psig) (F) (cc) (cm3) (%)

1.1 59423D 178 67

1.2 896612C 240 71

1.3 818411 191 73

Notes:

Bottomhole Sample 1.3 was selected for compositonal analysis and PVT study.

B.2

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Section C - Compositional Analysis of Bottomhole Reservoir Fluid

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Hocol, S.A.

Ocelote-1 Well______________________________________________________________________________________________RFL 0703054

Compositional Analysis of Bottomhole Sample to C36 plus

Component Mole % Weight %

H2 Hydrogen 0.00 0.00

H2S Hydrogen Sulphide 0.00 0.00CO2 Carbon Dioxide 0.08 0.01N2 Nitrogen 0.10 0.01C1 Methane 7.00 0.42C2 Ethane 0.10 0.01C3 Propane 0.02 0.00iC4 i-Butane 0.04 0.01nC4 n-Butane 0.01 0.00C5 Neo-Pentane 0.00 0.00iC5 i-Pentane 0.17 0.05nC5 n-Pentane 0.04 0.01C6 Hexanes 0.95 0.31 M-C-Pentane 0.53 0.17 Benzene 0.03 0.01 Cyclohexane 0.23 0.07

C7 Heptanes 2.30 0.86 M-C-Hexane 2.06 0.75 Toluene 0.02 0.01

C8 Octanes 4.72 2.01 E-Benzene 0.35 0.14 M/P-Xylene 0.45 0.18 O-Xylene 0.16 0.06

C9 Nonanes 3.94 1.88 1,2,4-TMB 0.38 0.17

C10 Decanes 4.23 2.24C11 Undecanes 4.11 2.25C12 Dodecanes 3.94 2.37C13 Tridecanes 4.79 3.13C14 Tetradecanes 4.57 3.24

C15 Pentadecanes 4.81 3.69C16 Hexadecanes 4.11 3.40C17 Heptdecanes 3.75 3.31C18 Octadecanes 4.07 3.81C19 Nonadecanes 3.49 3.42C20 Eicosanes 3.14 3.22C21 Heneicosanes 2.80 3.03C22 Docosanes 2.51 2.86C23 Tricosanes 2.31 2.74C24 Tetracosanes 2.11 2.60C25 Pentacosanes 1.92 2.46C26 Hexacosanes 1.75 2.34C27 Heptacosanes 1.67 2.33C28 Octacosanes 1.55 2.24C29

Nonacosanes 1.48 2.21C30 Triacontanes 1.35 2.09C31 Hentriacontanes 1.21 1.94C32 Dotriacontanes 1.02 1.68C33 Tritriacontanes 0.93 1.60C34 Tetratriacontanes 0.81 1.42C35 Pentatriacontanes 0.72 1.30

C36+ Hexatriacontanes Plus 7.17 25.94 _____ _____

Totals : 100.00 100.00

Note: 0.00 means less than 0.005.

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C.1


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Hocol, S.A.

Ocelote-1 Well______________________________________________________________________________________________RFL 0703054

Compositional Analysis of Bottomhole Sample to C36 plus

Calculated Residue Properties

C7 plus Mole% 91.49

Molecular Weight (g mol-1) 291

Density at 60F (g cm-3) 0.9160

C11 plus Mole% 72.09Molecular Weight (g mol-1) 337


C20 plus Mole% 34.45



C36 plus Mole % 7.17



Calculated Whole Sample Properties

Average mole weight (g mol-1) 268


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C.2


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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Section D- Constant Composition Expansion (CCE)

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Constant Composition Expansion at 173F

Single-phase Fluid Properties

Saturation pressure (bubble-point pressure) 167 psig

Thermal expansion factor of single phase fluid at 5000 psig

(Vol at 173F)/(Vol at 60F) 1.0490 vol / vol

Average single phase compressibility

(From 1630 psig to 167 psig) 5.73 x 10 -6 psi-1

Density at saturation pressure 0.8782 g cm-3

Mean Single-phase Compressibilities

Pressure Range MeanInitial Pressure Final Pressure Compressibility

(psig) (psig) (psi-1) (1)

5000 4000 4.41 x 10 -6

4000 3000 4.59 x 10 -6

3000 1630 4.91 x 10 -6

1630 167 5.73 x 10 -6

(1) Mean compressibility = (V2-V1) / [(V1+V2)/2] x 1/(P1 - P2)

D.1

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Constant Composition Expansion at 173F

Pressure Relative Density Instantaneous Y-Function (3)

(psig) Volume (1) (g cm-3) Compressibility(psi-1 x 10-6) (2)

5000 0.9762 0.8996 4.33

4000 0.9805 0.8957 4.49

3000 0.9850 0.8916 4.71

2000 0.9898 0.8873 5.01

1630 Reservoir pressure 0.9917 0.8856 5.17

1000 0.9950 0.8826 5.52

900 0.9955 0.8821 5.60

800 0.9961 0.8816 5.68

700 0.9967 0.8811 5.77

600 0.9973 0.8806 5.86

500 0.9978 0.8801 5.97

400 0.9984 0.8796 6.08300 0.9991 0.8790 6.20

200 0.9997 0.8785 6.28

167 Saturation pressure 1.0000 0.8782

160 1.0080

159 1.0092

156 1.0131

154 1.0159

152 1.0188

149 1.0235 4.685

140 1.0395 4.414

122 1.0843 3.906

101 1.1691 3.373

76 1.3546 2.829

49 1.7841 2.362

(1) Relative Volume = V / Vsat ie. volume at indicated pressure per volume at saturation pressure.

(2) Instantaneous compressibility = (V2-V1) / V1 x 1/(P1-P2)

'(3) Y-function = (Psat - P ) / ((Pabs)(V/Vsat - 1)).

D.2

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Graphs of Constant Composition Expansion Data

Relative Volume vs Pressure

Y Function vs Pressure

0.970

0.975

0.980

0.985

0.990

0.995

1.000

1.005

0 1000 2000 3000 4000 5000 6000

Pressure (psig)

Rel

ativeVolume,V/Vsat

2.000

2.500

3.000

3.500

4.000

4.500

5.000

0 20 40 60 80 100 120 140 160

Pressure (psig)

Y-Function

D.3

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Section E - Differential Vaporization

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Differential Vaporisation at 173F

Solution Relative Relative Deviation Gas Incremental

Pressure Gas-Oil Oil Total Density Factor Formation Gas Gravity

(psig) Ratio Volume Volume (g cm-3) (Z) Volume (Air = 1.000)

Rs(1) Bod(2) Btd(3) Factor (4)

167 20 1.054 1.054 0.8782 Saturation Pressure80 10 1.051 1.384 0.8790 0.994 0.18785 0.722

0 0 1.048 0.8798 0.786

At 60F = 1.000

Residual Oil Properties

Density of residual oil 0.9220 g cm-3 at 60F

API 21.8

(1) GOR in cubic feet of gas at 14.70 psia and 60F per barrel of residual oil at 60F.

(2) Volume of oil at indicated pressure and temperature per volume of residual oil at 60F.

(3) Volume of oil plus liberated gas at indicated pressure and temperature per volume of residual oil at 60F.

(4) Volume of gas at indicated pressure and temperature per volume at 14.70 psia and 60F.

E.1

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Graphs of Differential Vaporization

Solution Gas-Oil Ratio v Pressure

Relative Oil Volume v Pressure

0

5

10

15

20

25

0 20 40 60 80 100 120 140 160 180

Pressure (psig)

Gas

-OilR

atio(scf/bbl)

1.044

1.046

1.048

1.050

1.052

1.054

1.056

0 20 40 60 80 100 120 140 160 180

Pressure (psig)

Rel

ativeOilV

olume(V/Vr)

E.2

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Differential Vaporization Data Converted to Production Separator Conditions

Oil Solution Formation Gas Formation

Pressure Density Gas/Oil Volume Volume

(psig) (g cm-3) (scf / bbl) Factor Factor

Rs(1) Bo(1) Bg(2)

5000 0.8996 1.016

4000 0.8957 1.021

3000 0.8916 1.025

2000 0.8873 1.030

1630 Reservoir pressure 0.8856 1.032

1000 0.8826 1.036

900 0.8821 1.036

800 0.8816 1.037

700 0.8811 1.038

600 0.8806 1.038

500 0.8801 1.039

400 0.8796 1.039

300 0.8790 1.040

200 0.8783 1.041

167 Saturation pressure 0.8782 19 1.041

80 0.8790 9 1.038 0.18785

Notes:

(1) Differential data corrected to surface separator conditions of :-

Stage 1 70 psig and 85F


Rs = Rsfb - (Rsdb - Rsd) x (Bofb / Bodb)

Bo = Bod x (Bofb/Bodb)


E.3

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Differential Vaporization Data Converted to Production Separator Conditions

Oil Solution Formation Gas Formation

Pressure Density Gas/Oil Volume Volume

(psig) (g cm-3) (scf / bbl) Factor Factor

Rs(1) Bo(1) Bg(2)

5000 0.8996 1.017

4000 0.8957 1.022

3000 0.8916 1.026

2000 0.8873 1.031

1630 Reservoir pressure 0.8856 1.033

1000 0.8826 1.037

900 0.8821 1.037

800 0.8816 1.038

700 0.8811 1.039

600 0.8806 1.039

500 0.8801 1.040

400 0.8796 1.040

300 0.8790 1.041

200 0.8783 1.042

167 Saturation pressure 0.8782 19 1.042

80 0.8790 9 1.039 0.18785

Notes:

(1) Differential data corrected to surface separator conditions of :-



Rs = Rsfb - (Rsdb - Rsd) x (Bofb / Bodb)

Bo = Bod x (Bofb/Bodb)


E.4

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Reservoir Fluid Viscosity Data at 173F

Pressure Oil Calculated Oil/Gas

(psig) Viscosity Gas Viscosity Viscosity

(cP) (cP) (1) Ratio

5000 14.226

4000 12.656

3000 11.201

2000 9.888

1630 Reservoir pressure 9.447

1000 8.767

500 8.314

167 Saturation pressure 8.07880 8.724 0.0125 698.3

0 9.490

Reservoir Fluid Viscosity v Pressure at 173F

0.00

2.00

4.00

6.00

8.00

10.00

12.00

14.00

16.00

0 1000 2000 3000 4000 5000 6000

Pressure (psig)

V

iscosity

(cP)

F.1

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Section G - Separator Test Data

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Data from Separator Test 1

Gas-Oil Gas-Oil Oil Formation Separation Gas Gravity

Pressure Temperature Ratio Ratio Density Volume Volume of flashed gas

(psig) (F) Rsfb (g cm-3) Factor Factor (Air = 1.000)

(1) (2) Bofb (3) (4)

167 173 - 19 0.8782 1.041 Saturation Pressure

70 85 15 15 0.9049 1.017 0.677 *

0 60 4 4 0.9197 1.000 0.707



API 22.2

Note :

* Evolved gas collected and analysed to C11+.

(1) GOR in cubic feet of gas at 14.70 psia and 60F per barrel of oil at indicated pressure and temperature.

(2) GOR in cubic feet of gas at 14.70 psia and 60F per barrel of stocktank oil at 60F.

(3) Volume of saturated oil at 167 psig and 173F per volume of stocktank oil at 60F.

(4) Volume of oil at indicated pressure and temperature per volume of stocktank oil at 60F.

G.1

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Compositional Analysis of Separator Test Gas to C11+

Sampling Date 12-Apr-2007

Sample Description Ocelote-1 - 70psi Sep Test - First Stage Gas

Cylinder Number 818411

Sampling Conditions 70.0 psig @ 85.0F

Comments



H2S Hydrogen Sulphide 0.00 0.00CO2 Carbon Dioxide 2.83 6.35N2 Nitrogen 2.40 3.43C1 Methane 89.56 73.28C2 Ethane 2.41 3.70C3 Propane 0.21 0.47iC4 i-Butane 0.36 1.07

nC4 n-Butane 0.05 0.15iC5 i-Pentane 0.30 1.10nC5 n-Pentane 0.04 0.15C6 Hexanes 0.29 1.27C7 Heptanes 0.35 1.79

C8 Octanes 0.87 5.07

C9 Nonanes 0.31 2.03

C10 Decanes 0.02 0.14C11+ Undecanes + 0.00 0.00

______ ______

Totals : 100.00 100.00Note: 0.00 means less than 0.005.

Calculated Residue Properties Mole Weight Density

(g mol-1) (g cm-3 @ 60F )

C7+ Heptanes plus 114.1 0.7067C8+ Octanes plus 118.2 0.7117

C10+ Decanes plus 134.0 0.7780

C11+ Undecanes plus - -

Calculated Whole Gas Properties

Real Relative Density 0.6789 (Air=1 @ 14.73 psia & 60F)

Whole Sample Mole Weight 19.61 g mol-1

Real Gas Density 0.8317 kg m-3 @ 15C

Ideal Gross Calorific Value 1092.6 BTU.ft-3 @ 14.73psia, 60F

Ideal Net Calorific Value 988.1 BTU.ft-3 @ 14.73psia, 60F

Pseudo Critical Press. 668.5 psia

Pseudo Critical Temp. 367.1 Rankine

Gas Compressibility Factor, Z 0.9971 @ 14.73 psia & 60F

Gas Viscosity 0.011 cP

GPM (C2+) 1.863GPM (C3+) 1.222

G.2

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Data from Separator Test 2

Gas-Oil Gas-Oil Oil Formation Separation Gas Gravity

Pressure Temperature Ratio Ratio Density Volume Volume of flashed gas

(psig) (F) Rsfb (g cm-3) Factor Factor (Air = 1.000)

(1) (2) Bofb (3) (4)

167 173 - 19 0.8782 1.042 Saturation Pressure

20 85 17 17 0.9059 1.016 0.691 *

0 60 2 2 0.9201 1.000 0.706



API 22.1

Note :

* Evolved gas collected and analysed to C11+.

(1) GOR in cubic feet of gas at 14.70 psia and 60F per barrel of oil at indicated pressure and temperature.

(2) GOR in cubic feet of gas at 14.70 psia and 60F per barrel of stocktank oil at 60F.

(3) Volume of saturated oil at 167 psig and 173F per volume of stocktank oil at 60F.

(4) Volume of oil at indicated pressure and temperature per volume of stocktank oil at 60F.

G.3

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Hocol, S.A.

Ocelote-1 Well___________________________________________________________________________________________RFL 0703054

Compositional Analysis of Separator Test Gas to C11+

Sampling Date 12-Apr-2007

Sample Description Ocelote-1 - 20psi Sep Test - First Stage Gas

Cylinder Number 818411

Sampling Conditions 20.0 psig @ 85.0F

Comments



H2S Hydrogen Sulphide 0.00 0.00CO2 Carbon Dioxide 2.91 6.40N2 Nitrogen 1.94 2.71C1 Methane 88.74 71.10C2 Ethane 3.17 4.76C3 Propane 0.26 0.57iC4 i-Butane 0.38 1.10

nC4 n-Butane 0.06 0.17iC5 i-Pentane 0.33 1.19nC5 n-Pentane 0.05 0.18C6 Hexanes 0.37 1.59C7 Heptanes 0.42 2.10

C8 Octanes 0.96 5.48

C9 Nonanes 0.34 2.18C10 Decanes 0.07 0.47C11+ Undecanes + 0.00 0.00

______ ______

Totals : 100.00 100.00Note: 0.00 means less than 0.005.

Calculated Residue Properties Mole Weight Density

(g mol-1) (g cm-3 @ 60F )

C7+ Heptanes plus 114.4 0.7084C8+ Octanes plus 118.7 0.7140

C10+ Decanes plus 134.0 0.7780

C11+ Undecanes plus - -

Calculated Whole Gas Properties

Real Relative Density 0.6936 (Air=1 @ 14.73 psia & 60F)

Whole Sample Mole Weight 20.02 g mol-1

Real Gas Density 0.8498 kg m-3 @ 15C

Ideal Gross Calorific Value 1120.9 BTU.ft-3 @ 14.73psia, 60F

Ideal Net Calorific Value 1014.4 BTU.ft-3 @ 14.73psia, 60F

Pseudo Critical Press. 668.9 psia

Pseudo Critical Temp. 372.0 Rankine

Gas Compressibility Factor, Z 0.9969 @ 14.73 psia & 60F

Gas Viscosity 0.011 cP

GPM (C2+) 2.258GPM (C3+) 1.414

G.4

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Section H - Appendix

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Data Used in Gas Compositional Calculations

Component Mole Weight Density Component Mole Weight Density(g mol-1) (g cm-3 at 60F) (g mol-1) (g cm-3 at 60F)

Hydrogen * 2.016 N/A 33DMC5 * 100.20 0.6954

Oxygen/(Argon) ** 31.999 1.1410 Cyclohexane * 84.16 0.7827

Nitrogen (Corrected) ** 28.013 0.8086 2MC6/23DMC5 * 100.20 0.6917

Methane ** 16.043 0.2997 11DMCYC5/3MC6 * 99.20 0.7253

Carbon Dioxide ** 44.010 0.8172 t13DMCYC5 * 98.19 0.7528

Ethane ** 30.070 0.3558 c13DMCYC5/3EC5 * 99.20 0.7262

Hydrogen Sulphide ** 34.080 0.8006 t12DMCYC5 * 98.19 0.7554

Propane ** 44.097 0.5065 Heptanes (nC7) * 100.20 0.6875

i-Butane ** 58.123 0.5623 22DMC6 * 114.23 0.6994

n-Butane ** 58.123 0.5834 MCYC6 * 98.19 0.7740

Neo-Pentane * 72.15 0.5968 ECYC5 * 98.19 0.7704

i-Pentane ** 72.150 0.6238 223TMC5/24&25DMC6 * 114.23 0.7060n-Pentane ** 72.150 0.6305 ctc124TMCYC5 * 112.21 0.7511

22DMC4 * 86.18 0.6529 ctc123TMCYC5 * 112.21 0.7574

23DMC4/CYC5 * 78.16 0.7129 Toluene * 92.14 0.8734

2MC5 * 86.18 0.6572 Octanes (nC8) * 114.23 0.7063

3MC5 * 86.18 0.6682 E-Benzene * 106.17 0.8735

Hexanes (nC6) * 86.18 0.6631 M/P-Xylene * 106.17 0.8671

22DMC5 * 100.20 0.6814 O-Xylene * 106.17 0.8840

M-C-Pentane * 84.16 0.7533 Nonanes (nC9) * 128.26 0.7212

24DMC5 * 100.20 0.6757 Decanes *** 134 0.778

223TMC4 * 100.20 0.6947 Undecanes *** 147 0.789

Benzene * 78.11 0.8820 Dodecanes *** 161 0.800

Data Source Refs :

* ASTM Data Series Publication DS 4B (1991) - Physical Constants of Hydrocarbon and Non-Hydrocarbon

Compounds.

** GP A Table of Physical Constants of Paraffin Hydrocarbons and Other Components of Natural Gas,

GPA 2145-96.

*** Journal of Petroleum Technology, Nov 1978, Pages 1649-1655.

Predicting Phase Behaviour of Condensate/Crude Oil Systems Using Methane Interaction Coefficients

- D.L. Katz & A. Firoozabadi.

Note :The gas mole % compositions were calculated from the measured weight % compositions using

the most detailed analysis results, involving as many of the above components as were identified.

The reported component mole % compositions were then sub-grouped into the generic carbon

number components.

H.1

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Data Used in Oil Compositional Calculations

Component Mole Weight Density Component Mole Weight Density(g mol-1) (g cm-3 at 60F) (g mol-1) (g cm-3 at 60F)

Hydrogen * 2.016 N/A Undecanes *** 147 0.789

Hyd. sulphide ** 34.080 0.8006 Dodecanes *** 161 0.800

Carbon Dioxide ** 44.010 0.8172 Tridecanes *** 175 0.811

Nitrogen ** 28.013 0.8086 Tetradecanes *** 190 0.822

Methane ** 16.043 0.2997 Pentadecanes *** 206 0.832

Ethane ** 30.070 0.3558 Hexadecanes *** 222 0.839

Propane ** 44.097 0.5065 Heptadecanes *** 237 0.847

i-Butane ** 58.123 0.5623 Octadecanes *** 251 0.852

n-Butane ** 58.123 0.5834 Nonadecanes *** 263 0.857

i-Pentane ** 72.150 0.6238 Eicosanes *** 275 0.862

n-Pentane ** 72.150 0.6305 Heneicosanes *** 291 0.867

Hexanes ** 86.177 0.6634 Docosanes *** 305 0.872Me-cyclo-pentane * 84.16 0.7533 Tricosanes *** 318 0.877

Benzene * 78.11 0.8820 Tetracosanes *** 331 0.881

Cyclo-hexane * 84.16 0.7827 Pentacosanes *** 345 0.885

Heptanes ** 100.204 0.6874 Hexacosanes *** 359 0.889

Me-cyclo-hexane * 98.19 0.7740 Heptacosanes *** 374 0.893

Toluene * 92.14 0.8734 Octacosanes *** 388 0.896

Octanes ** 114.231 0.7061 Nonacosanes *** 402 0.899

Ethyl-benzene * 106.17 0.8735 Triacontanes *** 416 0.902

Meta/Para-xylene * 106.17 0.8671 Hentriacontanes *** 430 0.906

Ortho-xylene * 106.17 0.8840 Dotriacontanes *** 444 0.909

Nonanes ** 128.258 0.7212 Tritriacontanes *** 458 0.912

1-2-4-T-M-benzene * 120.19 0.8797 Tetratriacontanes *** 472 0.914

Decanes ** 142.285 0.7334 Pentatriacontanes *** 486 0.917

Data Source Refs :

* ASTM Data Series Publication DS 4B (1991) - Physical Constants of Hydrocarbon and Non-Hydrocarbon

Compounds.

** GPA Table of Physical Constants of Paraffin Hydrocarbons and Other Components of Natural Gas

GPA 2145-96.

*** Journal of Petroleum Technology, Nov 1978, Pages 1649-1655.

Predicting Phase Behaviour of Condensate/Crude Oil Systems Using Methane Interaction Coefficients

- D.L. Katz & A. Firoozabadi.

Note :

The residue mole weight and density values ( eg heptanes plus, undecanes plus, eicosanes plus) are

calculated so that the calculated average mole weights and densities correspond with the measured

values. This can lead to anomalous residue mole weights and densities where the Katz and

Firoozabadi values may not be suitable for the isomer groups detected.

H.2

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Report prepared by Report approved by

David McEvoy Simn RodrguezProject Manager SupervisorReservoir Fluid Laborator Reservoir Fluid Laborator

Oce-1 PVT Final Report B

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