Development of an Improved Cement for Geothermal Wells Geothermal Project

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Last modified on July 22, 2011.

Project Title Development of an Improved Cement for Geothermal Wells
Project Type / Topic 1 Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis
Project Type / Topic 2 High Temperature Cements
Project Description Cementing of geothermal wells poses a unique challenge because these wells need to operate in the harsh environment of high temperature and/or high pressure. The current state of the art in geothermal well cementing is limited primarily to a proprietary blend of fly ash-modified calcium aluminate phosphate cement or CaP cement. Although CaP cements appear to perform effectively once placed, their use requires meticulous planning far above and beyond a normal cementing operations, and has unpredictable results, which tend to increase cost and limit their widespread use.
State Alaska
Objectives Develop a novel, zeolite-containing lightweight, high temperature, high pressure geothermal cement, which will provide operators with an easy to use, flexible cementing system that saves time and simplifies logistics.
Awardees (Company / Institution) Trabits Group, LLC
Awardee Website http://www.trabitsgroup.com/
Partner 1 University of Alaska Fairbanks
Partner 2 ThermaSource Cementing, Inc.





Funding Opportunity Announcement DE-FOA-0000075
DOE Funding Level (total award amount) $2,154,238.00
Awardee Cost Share $538,557.00
Total Project Cost $2,692,795.00


Principal Investigator(s) George Trabits


Targets / Milestones - Find the right type of zeolite, and its optimum blend with silica flour and other additives to achieve the cement characteristics desirable for geothermal applications.


- A systematic, iterative approach will be used to test a large number of zeolite cement samples and shortlist them in order to identify potential cement compositions suitable for geothermal applications.
- Cements will be field tested in geothermal wells.

Successful completion of the project will result in the development of a cementing solution for geothermal wells that is cost effective as well as logistically simple. This should greatly enhance rapid deployment of geothermal energy as a renewable energy source in USA, thereby reducing the flow of US dollars to petroleum exporting countries.



Location of Project Wasilla, AK, Fairbanks, AK, Arbuckle, CA, Reno, NV
, 64.8378°, -147.7164°, ,


Impacts If successful, the project will result in the development of a cementing solution for high temperature geothermal wells.
Funding Source American Recovery and Reinvestment Act of 2009
References EERE Geothermal Technologies Programs[1]

References

  1. EERE Geothermal Technologies Programs