GOR Vs GVF
Short Description
Download GOR Vs GVF...
Description
Multi Phase Flow Meter Vendors quote on their specification sheets GVF functional range. What is GVF? Let us understand it. Operations Engineer should have full clarity on GVF  What it is and how it is calculated from the readily known well fluid ope understanding GVF and calculating it from the normally known well fluid operating data and the expected variations. Useful f Vop=Ps*Vs*Zop*Top/(Pop*Zs*Ts)
Most of the Multi Phase Flow Metering specifications require that GVF range is specified. This spreadsheet calculates GVF, from the normally known Flow, GOR & WC data. GVF is gas to total fluids percentage at actual conditions
Temp in Rankine, Pressure, psia Black font is user input RED Font data cells are Std/Calculated.
GAS VOLUME(VOID) FRACTION, GVF  CALCULATION S
Parameter Case/Units
C A S E 1
C A S E
GOR
WC Water Cut
W Water Flow
Liquid (oil+water)
Vg,std, Gas Flow at Standard Conditions
BBLs/DAY
SCF/BBL
%
BWPD
BLPD
SCFD
1000 5000 20000
500 600 1000
70 50 50
2333 5000 20000 0 0 0 0
3333 10000 40000 0 0 0 0
500,000 3,000,000 20,000,000 
0 0 0 0 0
0 0 0 0 0

0 0 0 0 0 0 0 0 0 0
0 0 0 0 0 0 0 0 0 0

O Oil Flow
10000 20000
When liquid & gas flows are given use this row. GOR & WC are not needed
1,700,000 500,000
C A S E 2
When liquid & gas flows are given use this row. GOR & WC are not needed
Gas Volume (void) Fraction (GVF.) Definition: GVF, or gas volume fraction, is defined as the ratio of the gas volumetric flowrate to the total volumetric flowrate. The total volumetric flowrate is the sum of the liquid volumetric rate and the gas volumetric flowrate. These volumetric flows are usually expressed in actual (not standardized )volumetric terms. Express in either percentage (0100%) or WC = Water Cut or Percentage Gas Oil Ratio (GOR) is expressed in Standard Cubic Feet of gas per barrel of hydrocarbon liquid crude (SCF/BBL) BWPD = Barrels of Water Per Day BLPD = Barrels of Liquid (Crude+Water) Per Day SCFD = Standard Cubic Feet Per Day
at is GVF? Let us understand it. Needless to say, before MPFMs selection the specifying he readily known well fluid operating data of Water Cut, GOR and flows. This spreadsheet readily helps Operating Engineer in he expected variations. Useful for reviewing and specifying the GVF range while ordering the MPFMs. 1 2 3 4 5
e Std/Calculated.
Case 1 = When Oil Flow, Water cut and GOR are given Case 2= When Standard oil, water and Gas Flows are given. GOR & WC Not necessary. Go Any one row is enough for a condition, table can be used to find a range of GVF by varyin Variation in liquid volumes at Standard and actual conditions is taken as negligible Input Zop & Zs values correctly by using the other worksheet. Refer other worksheet tit Z values are also dependent on the compositions of N2, CO2 & H2S use other worksheet
ION, GVF  CALCULATION SPREADSHEET FROM UPSTREAM WELL DATA  P, T, OIL FLOW, WATER CUT & GOR
Vg,op= G Gas Flow at Operating Conditions
Ps Pressure Std
Ts Temp Std
Zs Comp Factor
Pop Operating Pressure
Top Operating Temp
Zop Comp Factor
PSIA
Rankine
No.
PSIA
Rankine
No.
14.7 14.7 14.7 14.7 14.7 14.7 14.7
520 520 520 520 520 520 520
0.9987 0.9987 0.9987
100 200 300
600 700 800
0.9937 0.9927 0.9948
14.7 14.7 14.7 14.7 14.7
520 520 520 520 520
#DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!
14.7 14.7 14.7 14.7 14.7 14.7 14.7 14.7 14.7 14.7
520 520 520 520 520 520 520 520 520 520
#DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!
14.7 14.7 14.7
520 520 520
1 1
100 200
600 700
0.9937 0.9927
G, in Ft3/Day 84,383 295,044 1,501,805 #DIV/0! #DIV/0! #DIV/0! #DIV/0!
286,530 49,110 #DIV/0!
14.7 14.7
520 520
volumetric flowrate. owrate. These n either percentage (0100%) or corresponding Fraction (0.0 to 1.0) as needed.
crude (SCF/BBL)
#DIV/0! #DIV/0!
s Operating Engineer in
given. GOR & WC Not necessary. Go to Row for case2 for GVF calculation. sed to find a range of GVF by varying oil, water cut, GOR or flows. nditions is taken as negligible rksheet. Refer other worksheet titled "Z Calculation" in this file 2, CO2 & H2S use other worksheet to correctly input Z values.
W, WATER CUT & GOR
Vg,op= G Gas Flow at Operating Conditions G, in BPD 15,028 52,546 267,463 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! 51,029 8,746 #DIV/0!
GAS+OIL+WATER Total Liquid Flow at Operating Conditions BLPD
GAS VOLUME(VOID) FRACTION= 100*G/(G+O+W) GVF in %
18,361 62,546 307,463 #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!
81.85 84.01 86.99 #DIV/0! #DIV/0! #DIV/0! #DIV/0!
61,029 28,746
83.61 30.43 #DIV/0!
#DIV/0!
#DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0! #DIV/0!
#DIV/0! #DIV/0!
#DIV/0! #DIV/0!
#DIV/0! #DIV/0!
Description: This spreadsheet calculates gas compressibility factor based on Brill and Beggs correlation. Instruction: 1) Select a unit system; 2) Update data in the Input Data section;
3) Review result in the Solution section. 1
0
14.7 psia
30 MPa
Input Data:
Pressure: Temperature: Gas specific gravity: Mole fraction of N2: Mole fraction of CO2: Mole fraction of H2S:
60 F 0.65 air = 1 0.1
100 C 0.65 air = 1 0.1
0.08
0.08
0.02
0.02
Solution:
Pseudocritical pressure = Pseudocritical temperature = Pseudoreduced pressure = Pseudoreduced temperature = A= B= C= D= Gas compressibility factor z =
697 psia 345 R 0.02 1.60 0.4684 0.0053 0.0668 0.9849 0.9987
4.74 MPa 191.53 K 0.02 1.60 0.4684 0.0053 0.0668 0.9849 0.9987
Reference: BrillBeggsZ.xls http://petroleumsupport.com/brillbeggsz/
14.7 psia 92 F 0.65 1 for air 0.1 0.08 0.02
View more...
Comments