Ameren Illinois' Horizontal Drilling Success in Natural Gas Storage is Breaking New Ground In Freeburg
FREEBURG - Ameren Illinois literally had to go underground to do some "cosmetic surgery" to several of its natural gas storage fields, but the results are reshaping these 60-year-old-plus facilities. The company is utilizing horizontal drilling in its shallow depleted reservoirs in Tilden, Freeburg, Eden and Centralia – an approach that’s proving to be both technically innovative and economically transformative. The concept of horizontal drilling first surfaced at Ameren Illinois around 2016. While a few other storage operators had experimented with it, Ameren Illinois faced a challenge: aging infrastructure across multiple farmer's fields, including Tilden and Freeburg, with dozens of legacy wells and miles of vintage pipeline nearing the end of their useful life. Tilden had 51 wells and Freeburg had 81 wells – most which were installed in the 1960s and could not be modernized to comply with evolving Federal Regulations. These wells were scattered across many acres
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