Reservoir Stimulation Optimization with Operational Monitoring for Creation of EGS

Description

EGS field projects have not sustained production at rates greater than 1/2 of what is needed for economic viability. The primary limitation that makes commercial EGS infeasible is our current inability to cost-effectively create high-permeability reservoirs from impermeable, igneous rock within the 3,000-10,000 ft depth range. Our goal is to develop a novel fracturing fluid technology that maximizes reservoir permeability while reducing stimulation cost and environmental impact. Laboratory equipment development to advance laboratory characterization/monitoring is also a priority of this project to study and optimize the physicochemical properties of these fracturing fluids in a range of reservoir conditions. Barrier G is the primarily intended GTO barrier to be addressed as well as support addressing barriers D, E and I.

Resources

Name Format Description Link
10 Description of the videos generated during acoustic emission analysis on lab-scale fracturing experiments performed on samples Newberry-1 and Newberry-4 obtained at 706 m depth. https://gdr.openei.org/files/455/Acoustic%20emission%20description%20on%20two%20fracturing%20experiments%20on%20Newberry%20samples%201%20and%204%20%281%29.docx
77 Video showing the response of 8 sensors located around the rock sample being fractured by PNNL fracturing fluids at two different confining P/T https://gdr.openei.org/files/455/Newberry-1.mp4
10 Analysis of the pressure generated by PNNL fracturing fluid as a result of the CO2-triggered volume expansion of a polymer solution https://gdr.openei.org/files/455/Gel%20expansion-based%20Stress%20analysis%20%281%29.docx
77 Video showing the response of 8 sensors located around the rock sample being fractured by PNNL fracturing fluids at two different confining P/T https://gdr.openei.org/files/455/Newberry-4.mp4
10 A summary of permeability values and x-ray microtomography (XMT) images before and after lab-scale fracturing exps at different confining pressures, temperatures and pH on rock cores from two different EGS reservoirs, Newberry and Coso. https://gdr.openei.org/files/455/XMT%20images%20%26%20permeabilities%20before%20and%20after%20fracturing%20Newbery%20and%20Coso%20EGS%20cores%20at%20different%20P-T-pHs%20%281%29.docx

Tags

  • volume-expansion
  • egs
  • fracture-response
  • rheoreversible-fluids
  • acoustic-signature
  • xmt
  • igneous-rock
  • permeability
  • fracturing
  • laboratory-scale
  • x-ray-microtomography
  • stress
  • geothermal
  • acoustic-emission

Topics

Categories