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gas flow MMscf/day = MSm3/day

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  • gas flow MMscf/day = MSm3/day

    is it the same?
    std. cubic feet in imperial units, M is mega (1000) so MM (1000*1000) = million
    metric SI units, the prefix M is mega with a factor of 10^6 = million
    but again I am seeing field units in metric million as MMSm3/day

    Any ideas? thanks

  • #2
    Re: gas flow MMscf/day = MSm3/day

    Originally posted by Unregistered View Post
    is it the same?
    std. cubic feet in imperial units, M is mega (1000) so MM (1000*1000) = million
    metric SI units, the prefix M is mega with a factor of 10^6 = million
    but again I am seeing field units in metric million as MMSm3/day

    Any ideas? thanks
    It certainly isn't proper SI, so it must be a unit made up by the gas company and you'll have to ask them what they mean by it.

    In the SI, qualifiers like S for standard or N for normal can't be mixed with unit symbols (although it is a VERY common misuse.) A prefix may not be used alone and attaches to the unit, so Mm≥ would be cubic megameters. (I am sure that is not their intent). Roman numerals are never used.

    If you want to indicate a million cubic meters, you could use cubic hectometers hm≥

    However, I asked NIST a similar question a few years ago, and they recommended not using "standard" or "normal" gas volumes at all, but to use moles instead, with an appropriate prefix.

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    • #3
      Re: gas flow MMscf/day = MSm3/day

      1 mmscf= .028 mmscm

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      • #4
        Re: gas flow What is KSm3/d & m3Vn

        And so what is KSM3/D. Is it different from the MSM3/D which I understand means million cubic meter per day.
        What does the unit M3Vn mean

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        • #5
          Re: gas flow MMscf/day = MSm3/day

          Afraid you have "Mega" defined incorrectly.

          M or Mega is 10^6, or 1,000,000
          k or kilo is 10^3, or 1,000

          For the record:
          m is milli, 10^-3, or 0.001 (1/1,000)

          Problem is that m also means metres.

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          • #6
            Re: gas flow MMscf/day = MSm3/day

            MMscf/day = MSm3/day

            The M in the meters is probably Mega (10^6)
            the MM in cf is probably form the roman MM = 10^6

            Comment


            • #7
              Re: gas flow MMscf/day = MSm3/day

              From Schlumberger:

              MMscf

              1. n. [Production Testing] ID: 11227

              Abbreviation for million standard cubic feet, a common measure for volume of gas. Standard conditions are normally set at 60oF and 14.7 psia.

              See: million standard cubic feet

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