The U.S. Energy Information Administration (EIA) has identified an error in the Natural Gas Monthly (NGM) data published on May 29. The error caused marketed and dry natural gas production for the first three months of 2015 to be underreported by about 1.5 billion cubic feet per day (Bcf/d). An adjustment for carbon dioxide produced in the “Other States” category did not properly account for required changes in the gross-to-marketed calculation used in preparation of data from EIA’s Form 914 monthly natural gas production survey. Dry gas production for the first quarter of 2015 is now estimated to be approximately 73.5 Bcf/d.
EIA will republish the May NGM as soon as possible, and the corrected data will be reflected in the June and subsequent NGMs. EIA is in the midst of a transition in its monthly production reports, expanding detailed reporting of natural gas production to more states. In contrast to EIA’s data prior to 2015, gross withdrawals reported for 2015 exclude volumes produced from carbon dioxide wells. For certain states, the May 29 computations double-counted the carbon dioxide removed from gross production, thus resulting in a lower level of marketed and dry natural gas production than should have been reported in Table 1 of the May NGM. Note: Marketed production is calculated as gross production less nonhydrocarbon gases, vented and flared gas, and reinjected gas.