Domestic production growth, incentivized by demand for U.S. LNG exports, has been a driving factor behind a run of outsized fall storage injections that has substantially driven down natural gas prices in recent weeks.

That’s according to a recent research note published by the Energy Information Administration (EIA), which found that U.S. storage injections totaled 427 Bcf during September. That was part of a run of five consecutive triple-digit injections, including a 129 Bcf build for the week ended Sept. 30 that was the second-largest weekly net injection on record for data going back to 1993, according to the agency.

“For the past five injection seasons, an average of 18% of natural gas injections in storage during the refill season occurred during September,”...