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  2. Gas/oil ratio - Wikipedia

    en.wikipedia.org/wiki/Gas/oil_ratio

    When oil is produced to surface temperature and pressure it is usual for some natural gas to come out of solution. The gas/oil ratio (GOR) is the ratio of the volume of gas ("scf") that comes out of solution to the volume of oil — at standard conditions. In reservoir simulation gas/oil ratio is usually abbreviated .

  3. Energy return on investment - Wikipedia

    en.wikipedia.org/wiki/Energy_return_on_investment

    The issue is still subject of numerous studies, and prompting academic argument. That's mainly because the "energy invested" critically depends on technology, methodology, and system boundary assumptions, resulting in a range from a maximum of 2000 kWh/m 2 of module area down to a minimum of 300 kWh/m 2 with a median value of 585 kWh/m 2 according to a meta-study from 2013.

  4. Steam to oil ratio - Wikipedia

    en.wikipedia.org/wiki/Steam_to_oil_ratio

    The steam to oil ratio is a measure of the water and energy consumption related to oil production in cyclic steam stimulation and steam assisted gravity drainage oil production. SOR is the ratio of unit of steam required to produce unit of Oil. The typical values are three to eight and two to five respectively. This means two to eight barrels ...

  5. Reserves-to-production ratio - Wikipedia

    en.wikipedia.org/wiki/Reserves-to-production_ratio

    The reserves-to-production ratio is the most widely quoted of the key indicators used in the oil and gas industry. It has a certain strategic significance for companies, which try to keep the value reasonably constant at approximately 10 years. A ratio which falls too low indicates a company in poor health.

  6. Oil and gas reserves and resource quantification - Wikipedia

    en.wikipedia.org/wiki/Oil_and_gas_reserves_and...

    The materials balance method for an oil or gas field uses an equation that relates the volume of oil, water and gas that has been produced from a reservoir and the change in reservoir pressure to calculate the remaining oil & gas. It assumes that, as fluids from the reservoir are produced, there will be a change in the reservoir pressure that ...

  7. How to Calculate Gas Costs for Your Next Road Trip - AOL

    www.aol.com/calculate-gas-costs-next-road...

    The higher the mpg, the more fuel-efficient your car is and the less money you’ll spend on gas during your road trip. Now, to calculate gas cost per mile simply divide the total miles driven by ...

  8. Current ratio: What it is and how to calculate it - AOL

    www.aol.com/finance/current-ratio-calculate...

    How to calculate the current ratio. You can calculate the current ratio by dividing a company’s total current assets by its total current liabilities. Again, current assets are resources that ...

  9. Choked flow - Wikipedia

    en.wikipedia.org/wiki/Choked_flow

    The ratios were obtained using the criterion that choked flow occurs when the ratio of the absolute upstream pressure to the absolute downstream pressure is equal to or greater than ([+] /) / (), where is the specific heat ratio of the gas. The minimum pressure ratio may be understood as the ratio between the upstream pressure and the pressure ...