Microhole Arrays Drilled With Advanced Abrasive Slurry Jet Technology To Efficiently Exploit Enhanced Geothermal Systems Geothermal Project

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Last modified on July 22, 2011.

Project Title Microhole Arrays Drilled With Advanced Abrasive Slurry Jet Technology To Efficiently Exploit Enhanced Geothermal Systems
Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis
Project Type / Topic 2 Drilling Systems

Project Description This project proposes to develop a cost-effective microhole drilling and completion technology with the Flash Abrasive Slurry Jet (ASJ) system and optimize it to maximize the efficiency of fluid circulation and heat removal for Enhanced Geothermal Systems (EGS). The proposed approach is expected to address the key obstacles that currently prevent EGS from becoming a technically feasible, commercially viable major contributor for electricity generation, namely: (1) reduce costs for drilling and well completion and (2) increase the volume of hot rock from which heat can be extracted.
State Oklahoma
Objectives -Evaluate and optimize the FLASH ASJTM system for drilling and completing microholes into deep 300°C geothermal reservoir rocks

-Optimize the completion method (hole sizing, length and placement of microhole arrays) for effective reservoir stimulation and heat recovery -Evaluate and optimize the required directional (kickoff, steering, measurement) capabilities for microholes -Demonstrate the potential for effective and efficient exploitation of EGS using microhole arrays

Awardees (Company / Institution) Impact Technologies, LLC

Awardee Website http://www.impact-tek.com/
Partner 1 Rock Mechanics & Explosives Research Laboratory, Missouri University of Science and Technology
Partner 2 Earth Sciences Division, Lawrence Berkeley National Laboratory









Funding Opportunity Announcement DE-FOA-0000075

DOE Funding Level (total award amount) $2,399,999.00
Awardee Cost Share $600,000.00
Total Project Cost $2,999,999.00



Principal Investigator(s) Kenneth Oglesby, Impact Technologies LLC


Targets / Milestones The configuration of microhole arrays and their operation can be optimized to:

-significantly increase the probability of intersecting flowing fractures (through larger number of boreholes and their flexible alignment with the local stress field) -reduce the risk of creating short-circuit flow paths between injecting and producing wells -maximize heat removal from a larger volume of stimulated rock matrix





Location of Project Tulsa, OK



Impacts This technology could increase the volume of hot rock from which heat can be extracted.
Funding Source American Recovery and Reinvestment Act of 2009

References EERE Geothermal Technologies Programs[1]

References

  1. EERE Geothermal Technologies Programs