Calculator Inputs
Use one page for ratio, gas, or liquid back-calculation.
Plotly Graph
The chart uses your result basis. It shows the current point and the ratio line over a range of liquid values.
Example Data Table
| Stream | Gas Rate (scf/d) | Liquid Rate (bbl/d) | GLR (scf/bbl) | Interpretation |
|---|---|---|---|---|
| Well A | 150,000 | 80 | 1,875.00 | Moderate gas loading |
| Well B | 210,000 | 95 | 2,210.53 | Elevated gas loading |
| Well C | 325,000 | 120 | 2,708.33 | Elevated gas loading |
| Well D | 475,000 | 160 | 2,968.75 | Elevated gas loading |
| Well E | 620,000 | 185 | 3,351.35 | Elevated gas loading |
Formula Used
Gas Liquid Ratio: GLR = Vg / Vl
Gas from ratio: Vg = GLR × Vl
Liquid from ratio: Vl = Vg / GLR
Normalized daily gas: Gasd = Gas × (24 / period hours)
Normalized daily liquid: Liquidd = Liquid × (24 / period hours)
This tool converts all inputs to canonical units of scf and bbl before calculation. Standard-condition gas basis should remain consistent across compared datasets.
How to Use This Calculator
- Select the calculation mode based on whether you need GLR, gas, or liquid.
- Enter known gas and liquid values with their units.
- Choose the ratio basis for displayed output and comparisons.
- Add design and alert ratios when you want deviation or threshold checks.
- Enter the operating period hours to normalize daily equivalent rates.
- Press calculate to view metrics, export files, and inspect the chart.
Frequently Asked Questions
1. What does gas liquid ratio measure?
It measures how much gas is produced per unit of liquid. Engineers use it to compare wells, separators, production trends, and changing reservoir behavior.
2. Why does the calculator support several unit systems?
Field reports and simulation packages often use different gas and liquid units. Multi-unit support helps you compare datasets without performing manual conversions first.
3. What is the difference between GLR and GOR?
GLR uses total liquid in the denominator, while GOR often uses oil only. If water production is high, GLR and GOR can differ meaningfully.
4. When should I use daily rates instead of total volumes?
Use daily rates when comparing operating performance over time. Use total volumes for a specific test or batch period. The ratio itself remains consistent if both use the same period.
5. Why is the threshold check useful?
A threshold helps flag unusual gas loading or process changes quickly. It is useful for surveillance dashboards, well testing reviews, and separator monitoring.
6. What does inverse LGR mean?
Inverse LGR expresses liquid per gas volume, often in bbl per MMscf. Some teams prefer it when evaluating condensate-rich streams or comparing gas handling efficiency.
7. Can I calculate gas or liquid if I only know the ratio?
Yes. Choose gas or liquid back-calculation mode, enter the known stream, and provide a design ratio. The calculator derives the missing quantity automatically.
8. Does temperature or pressure affect the result?
Yes, if reported gas volumes are based on different standard conditions. Keep your gas basis consistent before comparing results from labs, facilities, or vendors.