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PETE 216 Reservoir Rock and Fluid Properties Fall 2006-2007 Dr. Mahmut Parlaktuna CONVENTIONAL PVT MEASUREMENTS PowerPoint Presentation
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PETE 216 Reservoir Rock and Fluid Properties Fall 2006-2007 Dr. Mahmut Parlaktuna CONVENTIONAL PVT MEASUREMENTS. STANDARD PVT TESTS Compositional Analysis (CA) Multistage Separation (MSS) Constant Composition Expansion (CCE) (Flash vaporization test)

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slide1

PETE 216

Reservoir Rock and Fluid Properties

Fall 2006-2007

Dr. Mahmut Parlaktuna

CONVENTIONAL PVT MEASUREMENTS

PETE 216

slide2

STANDARD PVT TESTS

Compositional Analysis (CA)

Multistage Separation (MSS)

Constant Composition Expansion (CCE) (Flash vaporization test)

Differential Liberation Expansion (DLE) (Differential vaporization test)

Constant Volume Depletion (CVD)

PETE 216

slide4

OIL PVT ANALYSES

Bottomhole wellstream compositional analysis through C7+,

CCE

DLE

MSS

PETE 216

slide5

COMPOSITIONAL ANALYSIS

GAS CHROMATOGRAPHY (GC)

LIQUID CHROMATOGRAPHY (LC)

PETE 216

slide11

Constant Composition Expansion

Above bubblepoint

PETE 216

slide14

Differential Liberation Expansion

Gravity of residual oil = 35.1 °API @ 60 °F

1 Volume of gas at the standard conditions per volume of residual oil.

2 Volume of oil at indicated pressure and temperature per volume of oil at the standard conditions.

3 Volume of oil plus liberated gas at indicated pressure and temperature per volume of residual oil at the standard conditions.

4 Volume of gas at indicated pressure and temperature per volume at the standard conditions.

PETE 216

slide16

Multistage Separation Test

1 GOR per barrel of oil at indicated pressure and temperature.

2 GOR per barrel of stock-tank oil at 60 °F.

3 FVF per barrel of stock-tank oil at 60 °F.

4 Separator oil volume factor per barrel of stock-tank oil at 60 °F.

PETE 216

slide18

GAS CONDENSATE PVT ANALYSES

Recombined Wellstream Compositional Analysis (CA)

Constant Composition Expansion (CCE) (Flash vaporization test)

Constant Volume Depletion (CVD)

PETE 216

slide19

Constant Composition Expansion

1 Initial reservoir pressure

2 Saturation pressure at reservoir temperature

3 Vsat = volume of fluid at saturation pressure and reservoir temperature

4 Z=PV/nRT (n total number of moles)

5 (Volume of retrograde liquid at indicated pressure / total volume at saturation pressure)*100

PETE 216