Enhanced oil recovery

{
  "id": "MLC-T-ENV-009670",
  "term": "Enhanced oil recovery",
  "field": "Environment",
  "definition": "1. Removal of some of the heavy oil left in an oil well after primary and secondary recovery. See primary oil recovery, secondary oil recovery.\n\n2. Removal of some of the heavy oil left in an oil well after primary and secondary recovery.\n\n3. Injection of steam, gas, or other chemical compounds into hydrocarbon reservoirs to stimulate the production of usable oil beyond what is possible through natural pressure, water injection, and pumping at the wellhead.\n\n4. Use of certain methods such as water flooding or gas injection into existing wells to increase the recovery of crude oil from a reservoir. In the context of this subpart, EOR applies to injection of critical phase or immiscible carbon dioxide into a crude oil reservoir to enhance the recovery of oil.",
  "abbreviation": "EOR",
  "subject": "Biological substances",
  "references": [
    "Greenhouse Gas Emissions",
    "Greenhouse Emissions Glossary",
    "USGS Energy Resources Program at http://energy.usgs.gov/EnvironmentalAspects/EnvironmentalAspectsofEnergyProductionandUse/GeologicCO2Sequestration/Definitions.aspx",
    "40 CFR 98.238 (CFR 2013)"
  ],
  "url": "https://mlchart.com/terminology/environment/enhanced-oil-recovery/"
}