Gas Oil Ratio Calculator

Work out gas oil ratio instantly with clear inputs, formula shown and shareable results.

About Gas Oil Ratio Calculator

Producing gas-oil ratio is standard cubic feet of gas per stock tank barrel of oil. A rising GOR usually signals reservoir pressure falling below bubble point or gas cap breakthrough, both of which reduce ultimate oil recovery. Multi-stage separation recovers extra liquid, typically 3% per additional stage.

Formulas

Gas-oil ratio

GOR (scf/STB) = gas rate (scf/d) / oil rate (STB/d)

Energy equivalence

BOE = gas (scf) / 5800

Worked example

With the default values below, Gas Oil Ratio Calculator returns Gas-Oil Ratio of 800.0. Change any input above and every figure here is recalculated in your browser.

Inputs used

Gas Productionminimum 0 Mscf/day: 1,200 Mscf/day
Oil Productionminimum 0 bbl/day: 1,500 bbl/day
Separator Stagesaccepts 1–4: 2
Gas Priceminimum 0 per Mscf: 3.2 per Mscf

Results

Gas-Oil Ratio: 800.0
Gas In Barrels Of Oil Equivalent: 206.90
Daily Gas Revenue: $3,840.00
Stage Separation Liquid Uplift: 1.030

Step by step

1Values used
2Gas-oil ratio
3Energy equivalence
4Gas-Oil Ratio= 800.0
5Gas In Barrels Of Oil Equivalent= 206.90
6Daily Gas Revenue= 3,840.00
7Stage Separation Liquid Uplift= 1.030

Assumptions and limits

The result is derived only from the 4 inputs listed above. Anything not among them is not part of the calculation.
In particular, this calculator does not take inflation, tax, fees or charges or compounding frequency into account.
Figures are rounded for display to 3 decimal places, so totals built from several rounded parts can differ slightly from the unrounded arithmetic.

How these calculators are built and tested is described on the Methodology page. If a figure looks wrong, please report it.

Frequently Asked Questions

Why is a rising GOR a warning sign?

Free gas flowing to the wellbore steals pressure energy that would otherwise drive oil, and gas has far lower value per unit energy. Recovery falls once the reservoir goes below bubble point.

Is 6000 scf per barrel the right BOE conversion?

5800 or 6000 scf per barrel are both used, based on energy content. Note that BOE equates energy, not value — gas typically trades well below its BOE parity with oil.