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Petromium Tools / Formula set PVT-001

PVT Fluid Properties

Black-oil + gas correlations · pressure sensitivity · browser-only workspace · V2.0

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Units
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Current state and correlation response

Pressure sensitivity

Gas z factor versus pressure

Property against pressure · each series normalised to its own range, which the legend states

ControlledPVT-001 v1.0.0
Gas z factor versus pressure102030Pressure (MPa absolute)
Gas z · 0.84 to 0.985 over this pressure rangeGas viscosity · 0.000013 to 0.0000307 over this pressure range
Figure data
Sensitivity points behind Gas z factor versus pressure
Pressure (MPa a)Gas zGas viscosity
3.44740.946010.00001
4.74010.927310.00001
6.03290.909790.00001
7.32570.893720.00001
8.61840.879350.00001
9.91120.866950.00002
11.2040.856730.00002
12.49670.848840.00002
13.78950.843390.00002
15.08230.840360.00002
16.3750.839680.00002
17.66780.841220.00002
18.96060.84480.00002
20.68430.852430.00002
21.54610.857340.00002
22.83890.86590.00002
24.13170.875760.00002
25.42440.886750.00003
26.71720.898740.00003
28.010.911590.00003
29.30270.92520.00003
30.59550.939460.00003
31.88830.95430.00003
33.1810.969640.00003
34.47380.985420.00003

Each series is drawn normalised to its own range, so the curves can be compared in shape; the values here are the recorded ones.

Oil properties versus pressure

Property against pressure · each series normalised to its own range, which the legend states

ControlledPVT-001 v1.0.0
Oil properties versus pressure102030Pressure (MPa absolute)
Oil Rs · 16.4 to 107 over this pressure rangeOil Bo · 1.1 to 1.34 over this pressure rangeOil viscosity · 0.000583 to 0.00139 over this pressure range
Figure data
Sensitivity points behind Oil properties versus pressure
Pressure (MPa a)Oil RsOil BoOil viscosity
3.447416.410551.097090.00139
4.740123.702111.115420.00121
6.032931.40161.135170.00108
7.325739.438821.156170.00097
8.618447.766121.178310.00089
9.911256.34881.20150.00082
11.20465.160341.225680.00076
12.496774.179721.25080.00071
13.789583.389831.276790.00066
15.082392.776471.303630.00063
16.375102.32761.331280.00059
17.6678106.864561.343190.00058
18.9606106.864561.340670.00059
20.6843106.864561.337330.00061
21.5461106.864561.335660.00062
22.8389106.864561.333150.00063
24.1317106.864561.330660.00064
25.4244106.864561.328160.00066
26.7172106.864561.325680.00067
28.01106.864561.323190.00069
29.3027106.864561.320710.0007
30.5955106.864561.318240.00072
31.8883106.864561.315770.00074
33.181106.864561.313310.00075
34.4738106.864561.310850.00077

Each series is drawn normalised to its own range, so the curves can be compared in shape; the values here are the recorded ones.

Each property is independently scaled so trend direction remains legible. Exact values and units are retained in the Cases export sheet.

Correlation result · not a lab report

Current state

Pressure

3,000 psia

Oil state

undersaturated

Bubblepoint

2,463.01 psia

Gas z

0.85243

No fluid characterization, correlation selection, operating envelope, or reservoir decision is authorized by this worksheet.

Calculation mode

Declared workflow

Enter the current state, oil gravity, gas gravity, and bubblepoint solution GOR. The frozen correlation set and screening defaults remain visible but locked to the audited method set.

Absolute state and fluid descriptors

Basic inputs

Calculation complete

Calculation audit

0 warnings

Gas z

0.85243

Gas density

11.1374 lb/ft3

Gas Bg

0.0009157 rb/scf

Gas cg

0.000290528 1/psi

Gas viscosity

0.0218562 cP

Oil Rs

600 scf/STB

Oil Bo

1.337326

Oil density

44.209 lb/ft3

Oil viscosity

0.608758 cP

Ppr / Tpr

4.57 / 1.641

Calculation observations

STANDARD_Z_ASSUMED_UNITY

Gas FVF and stock-tank mass identities assume z=1.0 at the entered standard conditions.

CORRELATION_MODEL_ONLY

Correlation-based black-oil and gas screening only; laboratory PVT, compositional EOS, water, wax, asphaltene, and near-critical phase behavior are excluded.

Operational boundary: Correlation-based screening only. This worksheet does not replace laboratory PVT, compositional EOS regression, reservoir simulation, process simulation, or competent engineering review.

Named local cases

Browser snapshots

Save a snapshot to compare or restore an entered case on this device.

Current method status

Applicability map

DAK reduced range

Inside

Pseudocritical correction

sweet-gas

Pressure cases

25

Oil: California-oil Standing source envelope is screened explicitly; regional bias is not corrected.

Gas: DAK is not a compositional EOS and standard-condition z is declared as unity.

PVT-001 v1.0.0 · SPE PEH Vol. I · original-paper equation register Laboratory PVT remains authoritative Exact cases export independently of chart scaling