## How to Calculate and Solve for Standing Bubble Point | The Calculator Encyclopedia

The image above represents standing bubble point.

To compute for the standing bubble point, three essential parameters are needed and these parameters are Specific Gravity of Solution Gas (γg), Bubble Point Pressure (Pb) and Standing Bubble Point Parameter (a).

The formula for calculating the standing bubble point:

Rs = 18.2[((Pb / γg)0.83 x 10a) – 1.4]

Where:

Rs = Standing Bubble Point
γg = Specific Gravity of Solution Gas
Pb = Bubble Point Pressure
a = Standing Bubble Point Parameter

Let’s solve an example;
Find the standing bubble point with a specific gravity of solution gas of 24, bubble point pressure of 70 and standing bubble point parameter of 45.

This implies that;

γg = Specific Gravity of Solution Gas = 24
Pb = Bubble Point Pressure = 70
a = Standing Bubble Point Parameter = 45

Rs = 18.2[((Pb / γg)0.83 x 10a) – 1.4]
Rs = 18.2[((70 / 24)0.83 x 1045) – 1.4]
Rs = 18.2[((2.916)0.83 x 1045) – 1.4]
Rs = 18.2[(2.43 x 1045) – 1.4]
Rs = 18.2[2.431e+45 – 1.4]
Rs = 18.2[2.431e+45]
Rs = 4.425e+46

Therefore, the standing bubble point is 4.425e+46.

## How to Calculate and Solve for MBAL Gas Solubility | The Calculator Encyclopedia

The image above represents the MBAL gas solubility.

To compute for the MBAL gas solubility, four essential parameters are needed and these parameters are Specific Gravity of Solution Gas (γg), Specific Gravity of Stock Tank Oil (γo), Oil FVF (Bo) and Oil Density (ρo).

The formula for calculating MBAL gas solubility:

Rs = Boρo – 62.4γo / 0.0136γg

Where:

Rs = MBAL Gas Solubility
γg = Specific Gravity of Solution Gas
γo = Specific Gravity of Stock Tank Oil
Bo = Oil FVF
ρo = Oil Density

Let’s solve an example;
Given that specific gravity of solution gas is 9, specific gravity of stock tank oil is 13, oil FVF is 19 and oil density is 27. Find the MBAL gas solubility?

This implies that;

γg = Specific Gravity of Solution Gas = 9
γo = Specific Gravity of Stock Tank Oil = 13
Bo = Oil FVF = 19
ρo = Oil Density = 27

Rs = Boρo – 62.4γo / 0.0136γg
Rs = 19 x 27 – 62.4 x 13 / 0.0136 x 9
Rs = 513 – 811.19 / 0.1224
Rs = -298.19 / 0.1224
Rs = -2436.27

Therefore, the MBAL gas solubility is -2436.27.

## How to Calculate and Solve for Petrosky-Farshad Gas Solubility Parameter | The Calculator Encyclopedia

The image above represents petrosky-farshad gas solubility parameter.

To compute for the petrosky-farshad gas solubility parameter, two essential parameters are needed and these parameters are API Gravity (°API) and temperature (°Rankine) (T).

The formula for calculating the petrosky-farshad gas solubility parameter:

Rs = [7.716(10-4) (°API)1.541] – [4.561(10-5) (T -460)1.3911]

where:

Rs = Petrosky-Farshad Gas Solubility Parameter, x
°API = API Gravity
T = Temperature (°Rankine)

Let’s solve an example;
Find the petrosky-farshad gas solubility parameter with an API Gravity of 11 and a temperature of 90.

This implies that;

°API = API Gravity = 11
T = Temperature (°Rankine) = 90

Rs = [7.716(10-4) (°API)1.541] – [4.561(10-5) (T -460)1.3911]
Rs = [7.716(10-4) (11)1.541] – [4.561(10-5) (90 – 460)1.3911]
Rs = [7.716(10-4) (11)1.541] – [4.561(10-5) (-370)1.3911]
Rs = [7.716(10-4) (11)1.541] – [4.561(10-5) (NaN)]
Rs = [7.716(10-4) (40.2518)] – [4.561(10-5) (NaN)]
Rs = [0.03105] – [4.561(10-5) (NaN)]
Rs = 0.03105 – NaN
Rs = NaN

Therefore, the Petrosky-Farshad gas solubility parameter, x is NaN.

## How to Calculate and Solve for Glass Gas Solubility in a Fluid | The Calculator Encyclopedia

The image above represents glass gas solubility.

To compute for the glass gas solubility, four essential parameters are needed and these parameters are API Gravity (°API), Temperature (°Rankine) (T), Mean Bubble Point (Pb*) and Gas Gravity at Actual Separator Psep and Tsepg).

The formula for calculating the glass gas solubility:

γgs = γg[((°API)0.989 / (T – 460)0.172)Pb*]1.2255

Where:

γgs = Glass Gas Solubility
°API = API Gravity
T = Temperature (°Rankine)
Pb* = Mean Bubble Point
γg = Gas Gravity at Actual Separator Psep and Tsep

Let’s solve an example;
Find the glass gas solubility when the API Gravity is 15, the temperature is 30, the mean bubble point is 40 and the gas gravity at actual separator is 54.

This implies that;

°API = API Gravity = 15
T = Temperature (°Rankine) = 30
Pb* = Mean Bubble Point = 40
γg = Gas Gravity at Actual Separator Psep and Tsep = 54

γgs = γg[((°API)0.989 / (T – 460)0.172)Pb*]1.2255
γgs = 54[((15)0.989 / (30 – 460)0.172)40]1.2255
γgs = 54[((15)0.989 / (-430)0.172)40]1.2255
γgs = 54[((15)0.989 / (NaN))40]1.2255
γgs = 54[(14.5 / NaN)40]1.2255
γgs = 54[(NaN)40]1.2255
γgs = 54[NaN]1.2255
γgs = 54[NaN]
γgs = NaN

Therefore, the glass gas solubility is NaN.

## How to Calculate and Solve for Separator Gas Gravity in a Fluid | The Calculator Encyclopedia

The image above represents separator gas gravity.

To compute for the separator gas gravity, four essential parameters are needed and these parameters are API Gravity (°API), Actual Separator Temperature (°Rankine) (Tsep), Actual Separator Pressure (Psep) and Gas Gravity at Actual Separator Psep and Tsepg).

The formula for calculating the separator gas gravity:

γgs = γg[1 + 5.912(10-5)(°API)(Tsep – 460)log(Psep / 114.7)]

Where:

γgs = Separator Gas Gravity
°API = API Gravity
Tsep = Actual Separator Temperature (°Rankine)
Psep = Actual Separator Pressure
γg = Gas Gravity at Actual Separator Psep and Tsep

Let’s solve an example;
Find the separator gas gravity with an API Gravity of 21, actual separator temperature of 18, actual separator pressure of 14 and gas gravity at actual separator of 32.

This implies that;

°API = API Gravity = 21
Tsep = Actual Separator Temperature (°Rankine) = 18
Psep = Actual Separator Pressure = 14
γg = Gas Gravity at Actual Separator Psep and Tsep = 32

γgs = γg[1 + 5.912(10-5)(°API)(Tsep – 460)log(Psep / 114.7)]
γgs = 32[1 + 5.912(10-5)(21)(18 – 460)log(14 / 114.7)]
γgs = 32 [1 + 5.912(10-5)(21)(18 – 460) log(0.1220)]
γgs = 32 [1 + 5.912(10-5)(21)(-442) log(0.1220)]
γgs = 32 [1 + 5.912(10-5)(21) (-442) (-0.9134)]
γgs = 32 [1 + 0.501]
γgs = 32 [1.501]
γgs = 48.039

Therefore, the separator gas gravity is 48.039.

## How to Calculate and Solve for Vasquez-Beggs Gas Solubility in a Fluid | The Calculator Encyclopedia

The image above represents the Vasquez-Beggs Gas Solubility.

To compute for the Vasquez-Beggs gas solubility, five essential parameters are needed and these parameters are API Gravity (°API), Temperature (°Rankine) (T), Gas Gravity at Reference Separator Pressure (γgs), Gas Gravity at Actual Separator Psep and Tsep g) and Gas Solubility Parameter (C1, C2, C3).

The formula for calculating Vasquez-Beggs gas solubility:

Rs = C1 γgs γgC2 exp[C3(°API / T)]

Where:

Rs = Vasquez-Beggs Gas Solubitity
°API = API Gravity
T = Temperature (°Rankine)
γgs = Gas Gravity at Reference Separator Pressure
γg = Gas Gravity at Actual Separator Psep and Tsep
C1, C2, C3 = Gas Solubility Parameter

Let’s solve an example;
Find the Vasquez-Beggs gas solubility when the API Gravity is 24, Temperature is 180, gas gravity at reference separator pressure is 60, gas gravity at actual separator is 56, gas solubility parameter is 72, 66 and 45.

This implies that;

°API = API Gravity = 24
T = Temperature (°Rankine) = 180
γgs = Gas Gravity at Reference Separator Pressure = 60
γg = Gas Gravity at Actual Separator Psep and Tsep = 56
C1, C2, C3 = Gas Solubility Parameter = 72, 66, 45

Rs = C1 γgs γgC2 exp[C3(°API/ T)]
Rs = 72 x 60 x 5666 exp[45(24/ 180)]
Rs = 72 x 60 x 5666 exp[45(0.133)]
Rs = 72 x 60 x 5666 exp[6]
Rs = 72 x 60 x 2.401e+115 exp[6]
Rs = 72 x 60 x 2.401e+115 x 403.428
Rs = 6.974e+119

Therefore, the Vasquez-Beggs gas solubility is 6.974e+119.

## How to Calculate and Solve for Standing Gas Solubility Parameter | Nickzom Calculator

The image above represents the standing gas solubility parameter.

To compute for the standing gas solubility parameter, two essential parameters are needed and these parameters are API Gravity (°API) and Temperature (°Rankine) (T).

The formula for calculating the standing gas solubility parameter:

x = 0.0125°API – 0.00091(T – 460)

Where:

x = Standing Gas Solubility Parameter
°API = API Gravity
T = Temperature (°Rankine)

Let’s solve an example;
Given that the API Gravity is 22 and the temperature is 120.
Find the standing gas solubility parameter?

This implies that;

°API = API Gravity = 22
T = Temperature (°Rankine) = 120

x = 0.0125°API – 0.00091(T – 460)
x = 0.0125(22) – 0.00091(120 – 460)
x = 0.275 – 0.00091(-340)
x = 0.275 – -0.3094
x = 0.5844

Therefore, the standing gas solubility parameter is 0.5844.

## How to Calculate and Solve for Standing Gas Solubility of a Fluid | The Calculator Encyclopedia

The image above represents standing gas solubility.

To compute for the standing gas solubility, three essential parameters are needed and these are Solution Gas Specific Density (γg), System Pressure (P) and Standing Gas Solubility Parameter (x).

The formula for calculating the standing gas solubility:

Standing Rs = γg[(P / 18.2 + 1.4) 10x ]1.2048

Where:

Standing Rs = Standing Gas Solubility
γg = Solution Gas Specific Density
P = System Pressure
x = Standing Gas Solubility Parameter

Let’s solve an example;
Find the standing gas solubility when the solution gas specific density is 12, the system pressure is 40 and the standing gas solubility parameter is 20.

This implies that;

γg = Solution Gas Specific Density = 12
P = System Pressure = 40
x = Standing Gas Solubility Parameter = 20

Standing Rs = γg[(P / 18.2 + 1.4) 10x ]1.2048
Standing Rs = 12[(40 / 18.2 + 1.4) 1020 ]1.2048
Standing Rs = 12[(3.597802197802198) 1020]1.2048
Standing Rs = 12[(3.597802197802198) (100000000000000000000)]1.2048
Standing Rs = 12[359780219780219800000]1.2048
Standing Rs = 12[5.833292021408776e+24]
Standing Rs = 6.999950425690531e+25

Therefore, the standing gas solubility is 6.999950425690531e+25.

## How to Calculate and Solve for the Water – Oil Ratio of a Reservoir Fluid Flow | The Calculator Encyclopedia

The above image represents Water – Oil Ratio.

To compute for the water – oil ratio, six essential parameters are needed and these parameters are o)Oil Viscosity, (μw)Water Viscosity, (krw)Relative Permeability to Water, (kro)Relative Permeability to Oil, (Bw)Water Formation Volume Factor and (Bo)Oil Formation Volume Factor.

The formula for calculating the water – oil ratio:

WOR = [krw / kro] [μoBo  / μwBw ]

Where;

WOR = Water Oil Ratio
μo = Oil Viscosity
μw = Water Viscosity
krw = Relative Permeability to Water
kro = Relative Permeability to Oil
Bw = Water Formation Volume Factor
Bo = Oil Formation Volume Factor

Let’s solve an example;
Find the water – oil ratio when the oil viscosity is 9, water viscosity is 11 with a relative permeability to water of 21, relative permeability to oil of 7 and a water formation volume factor of 14 with oil formation volume factor of 27.

This implies that;

μo = Oil Viscosity = 9
μw = Water Viscosity = 11
krw = Relative Permeability to Water = 21
kro = Relative Permeability to Oil = 7
Bw = Water Formation Volume Factor = 14
Bo = Oil Formation Volume Factor = 27

WOR = [krw / kro] [μoBo  / μwBw ]
WOR = [21/7] [9 x 27 /11 x 14]
WOR = [21/7] [243/154]
WOR = [21/7] [1.5779]
WOR = [3] [1.5779]
WOR = 4.73

Therefore, the Water – Oil Ratio is 4.73.