{
  "@type": "dcat:Dataset",
  "accessLevel": "public",
  "bureauCode": [
    "019:20"
  ],
  "contactPoint": {
    "@type": "vcard:Contact",
    "fn": "Trenton T. Cladouhos",
    "hasEmail": "mailto:tcladouhos@altarockenergy.com"
  },
  "dataQuality": true,
  "description": "The Newberry Volcano EGS Demonstration in central Oregon, a 5 year project begun in 2010, tests recent technological advances designed to reduce the cost of power generated by EGS in a hot, dry well (NWG 55-29) drilled in 2008. First, the stimulation pumps used were designed to run for weeks and deliver large volumes of water at moderate well-head pressure. Second, to stimulate multiple zones, AltaRock developed thermo-degradable zonal isolation materials (TZIMs) to seal off fractures in a geothermal well to stimulate secondary and tertiary fracture zones. The TZIMs degrade within weeks, resulting in an optimized injection/ production profile of the entire well. Third, the project followed a project-specific Induced Seismicity Mitigation Plan (ISMP) to evaluate, monitor for, and mitigate felt induced seismicity. An initial stimulation was conducted in 2012 and continued for 7 weeks, with over 41,000 m3 of water injected. Further analysis indicated a shallow casing leak and an unstable formation in the open hole. The well was repaired with a shallow casing tieback and perforated liner in the open hole and re-stimulated in 2014. The second stimulation started September 23rd, 2014 and continued for 3 weeks with over 9,500 m3 of water injected. The well was treated with several batches of newly tested TZIM diverter materials and a newly designed Diverter Injection Vessel Assembly (DIVA), which was the main modification to the original injection system design used in 2012. A second round of stimulation that included two perforation shots and additional batches of TZIM was conducted on November 11th, 2014 for 9 days with an additional 4,000 m3 of water injected. The stimulations resulted in a 3-4 fold increase in injectivity, and PTS data indicates partial blocking and creation of flow zones near the bottom of the well.",
  "distribution": [
    {
      "@type": "dcat:Distribution",
      "accessURL": "https://gdr.openei.org/files/775/NEGS_Phase2.2_Report_Appendices_070315.pdf",
      "description": "Appendices for the Phase 2.2 Report",
      "format": "pdf",
      "mediaType": "application/pdf",
      "title": "Phase 2.2 Report Appendices.pdf"
    },
    {
      "@type": "dcat:Distribution",
      "accessURL": "https://gdr.openei.org/files/775/NEGS_Phase2.2_Report_Final_070315.pdf",
      "description": "Report detailing the findings of the Newberry EGS Demonstration Phase 2.2 which aimed to repair and re-stimulate Well 55-29.",
      "format": "pdf",
      "mediaType": "application/pdf",
      "title": "Phase 2.2 Report.pdf"
    }
  ],
  "identifier": "https://data.openei.org/submissions/6968",
  "issued": "2015-07-03T06:00:00Z",
  "keyword": [
    "EGS",
    "NEWGEN",
    "Newberry",
    "demonstration",
    "diverter material",
    "geothermal",
    "groundwater monitoring",
    "hydraulic",
    "microseismic monitoring",
    "repair",
    "stimulation",
    "temperature monitoring",
    "well"
  ],
  "landingPage": "https://gdr.openei.org/submissions/775",
  "license": "https://creativecommons.org/licenses/by/4.0/",
  "modified": "2024-07-09T16:57:23Z",
  "programCode": [
    "019:006"
  ],
  "projectLead": "Lauren Boyd",
  "projectNumber": "EE0002777",
  "projectTitle": "Newberry EGS Demonstration",
  "publisher": {
    "@type": "org:Organization",
    "name": "AltaRock Energy Inc"
  },
  "spatial": "{\"type\":\"Polygon\",\"coordinates\":[[[-121.4333333,43.51666667],[-121.0333333,43.51666667],[-121.0333333,43.91666667],[-121.4333333,43.91666667],[-121.4333333,43.51666667]]]}",
  "title": "Newberry EGS Demonstration: Repairing and Re-Stimulating Well 55-29 Report"
}