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Calcimator

Crude Oil Blending Calculator

Calculate blend ratios to achieve target API gravity and sulfur specifications from two crude streams.

Inputs

bbl
°API
wt%
bbl
°API
wt%
°API
wt%

Results

Blend API Gravity

29.6 °API

Blend Sulfur Content

1.55 wt%

Blend Specific Gravity0.88
Total Blend Volume100,000 bbl
API Target Met0
Sulfur Target Met0
Crude 1 % Needed for API Target52.5%
Crude 1 % Needed for Sulfur Target52%
Estimated Value Differential-$3.20
How to Use This Calculator
  1. Enter Crude 1 Volume, Crude 1 API Gravity, and Crude 1 Sulfur.
  2. Set Crude 2 Volume, Crude 2 API Gravity, and Crude 2 Sulfur.
  3. Adjust Target API Gravity, Target Max Sulfur as needed.
  4. Review Blend API Gravity (°API) and Blend Sulfur Content (wt%).
  5. Use Blend Specific Gravity and Total Blend Volume (bbl) to inform your decision.

How the result changes with Crude 1 API Gravity

Crude 1 API GravityBlend API GravityBlend Sulfur Content
1116.3 °API1.55 wt%
2422.99 °API1.55 wt%
4130.95 °API1.55 wt%
5536.9 °API1.55 wt%

What each input means

Crude 1 Volume
Volume of the first crude stream in barrels.
Crude 1 API Gravity
API gravity of the first crude (lighter crude).
Crude 1 Sulfur
Sulfur content of the first crude in weight percent.
Crude 2 Volume
Volume of the second crude stream in barrels.
Crude 2 API Gravity
API gravity of the second crude (heavier crude).
Crude 2 Sulfur
Sulfur content of the second crude in weight percent.
Target API Gravity
Desired API gravity for the blend.
Target Max Sulfur
Maximum allowable sulfur content for the blend.

What each result means

API Target Met
1 = Yes, 0 = No

How this is calculated

Worked example, using the default values

  1. Identify Input Parameters
    4 parameters
    Crude 1 Volume = 50000, Crude 1 API Gravity = 38, Crude 1 Sulfur = 0.3, Crude 2 Volume = 50000 = 8 input(s) provided
  2. Calculate Blend API Gravity
    29.6 = 29.6
  3. Calculate Blend Sulfur Content
    1.55 = 1.55
  4. Calculate Blend Specific Gravity
    Blend Specific Gravity
    0.8783 = 0.8783
  5. Calculate Total Blend Volume
    Total Blend Volume
    100000 = 100000

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