Cubic feet a day (cf/d)
  • At standard conditions, the number of cubic feet of natural gas produced from a well over a 24-hour period, normally an average figure from a longer period of time.
  • Generally expressed as
    • mcf/d = thousand cubic feet a day;
    • mmcf/d = million cubic feet a day;
    • bcf/d = billion cubic feet a day; or
    • tcf/d = trillion cubic feet a day

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