Stinger Enhanced Bits for Engineered Geothermal Systems (EGS) Geothermal Project

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Last modified on July 22, 2011.

Project Title Stinger Enhanced Bits for Engineered Geothermal Systems (EGS)
Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis
Project Type / Topic 2 Drilling Systems
Project Description Stinger enhanced durable fixed bladed bits and long-life roller cone bits present the best opportunity for increasing ROP in the construction of EGS assets in the near term. Additionally, the new turbine driven JackHammer will core out the center of the borehole ahead of the bit, thereby relieving the confining

pressure of the formation and providing an additional free surface for rapid rock disintegration.

State Wyoming
Objectives Apply Novatek's Stinger® and JackBit® technology in the development of an innovative, durable fixed bladed bit and improved roller cone bit that will increase ROP by three times in drilling hard rock formations normally encountered in developing EGS resources.
Awardees (Company / Institution) Novatek, Inc.
Awardee Website

Funding Opportunity Announcement DE-FOA-0000075
DOE Funding Level (total award amount) $4,500,000.00
Awardee Cost Share $7,200,000.00
Total Project Cost $11,700,000.00

Principal Investigator(s) David Hall

Location of Project Casper, WY
42.8667°, -106.3131°

Impacts Three times conventional rates of penetration with life expectancy of roller cone bits extended to 100 hours (compared to 10 to 25 hours for current commercially manufactured bits).
Funding Source American Recovery and Reinvestment Act of 2009
References EERE Geothermal Technologies Programs[1]


  1. EERE Geothermal Technologies Programs