Injection Zone

{
  "id": "MLC-T-ENV-014395",
  "term": "Injection Zone",
  "field": "Environment",
  "definition": "1. A geological formation, group of formations, or part of a formation that receives fluids through a well.\n\n2. A geological formation receiving fluids through a well.\n\n3. The injection zone is the geological formation or group of formations or part of a formation receiving fluids through an injection well. In deep hazardous injection wells, it is composed of two parts: the injection interval (or emplacement interval) and the arrestment interval. The injection fluid is injected directly into the injection interval; the arrestment interval includes those rock layers into which the injection fluid may move either directly or by diffusion. Above the injection zone, there must be a confining zone.\n\n4. Geological formation, group of formations, or part of a formation receiving fluids through a well.[40 CFR 144.3 (CFR 2018)]",
  "subject": "Land, waste and cleanup",
  "references": [
    "Underground Injection Control Glossary",
    "Terms of Environment",
    "Underground Injection Control Terms",
    "40 CFR 146.3 (CFR 2018)"
  ],
  "url": "https://mlchart.com/terminology/environment/injection-zone/"
}