{
  "abstract": "Hydrogen consuming microorganisms can cause operational challenges for subterranean hydrogen storage. The systems and methods described herein provide sterilization techniques that include acidifying a subterranean reservoir prior to injection of hydrogen. Acidification may be facilitated by, at least partially, saturating a fluid with an acidifying agent such as carbon dioxide. The subterranean reservoir's fluid may be reduced to 3 pH to 4 pH. Hydrogen may then be injected into the subterranean reservoir for storage.",
  "assignees": [
    "EXXONMOBIL TECHNOLOGY & ENGINEERING COMPANY"
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  "authors": [
    "LEE ALEX G"
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  "source_date": "2026-02-12",
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  "supersedes": null,
  "title": "Eliminating microbial hydrogen consumption in subsurface hydrogen storage",
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