High Temperature, High Pressure Devices for Zonal Isolation in Geothermal Wells Geothermal Project
Last modified on July 22, 2011.
|Project Title||High Temperature, High Pressure Devices for Zonal Isolation in Geothermal Wells|
|Project Type / Topic 1||Recovery Act: Enhanced Geothermal Systems Component Research and Development/Analysis|
|Project Type / Topic 2||Zonal Isolation|
|Project Description|| For Enhanced Geothermal Systems (EGS), high-temperature high-pressure zonal isolation tools capable of withstanding the downhole environment are needed. In these wells the packers must withstand differential pressures of 5,000 psi at more than 300°C, as well as pressures up to 20,000 psi at 200°C to 250°C. Furthermore, when deployed these packers and zonal isolation tools must form a reliable seal that eliminates fluid loss and mitigates short circuiting of flow from injectors to producers. At this time, general purpose open-hole packers do not exist for use in geothermal environments, with the primary technical limitation being the poor stability of existing elastomeric seals at high temperatures.
Key elements of the work plan include designing materials and mechanisms based on advanced shape-memory polymer materials, constructing prototype packers, and demonstrating their performance relative the needs of the geothermal industry.
|Objectives||To address the demand for improved zonal isolation devices, CTD is proposing to develop high-temperature high-pressure packers based on its experience developing remotely and autonomous deployable structures for space and our high temperature composite technology developed for downhole applications. These devices offer several attractive features for EGS applications, including autonomous setting once the tool has been positioned downhole and the ability to retrieve the zonal isolation device.|
|Awardees (Company / Institution)||Composite Technology Development, Inc.|
|Partner 2||Brontosaurus Technologies|
|Partner 3||Sandia National Laboratory|
|Funding Opportunity Announcement||DE-FOA-0000075|
|DOE Funding Level (total award amount)||$954,546.00|
|Awardee Cost Share||$240,000.00|
|Total Project Cost||$1,194,546.00|
|Principal Investigator(s)||Paul E. Fabian, Composite Technology Development, Inc.|
|Targets / Milestones||In this program, CTD and its collaborators will work together to develop and demonstrate high-temperature high-pressure zonal isolation devices suitable for use in EGS wells.|
|Location of Project||Lafayette, CO|
|Impacts||Technology is designed to provide the ability to isolate sections of the wellbore to enable stimulation and seal off unwanted flow regions in EGS completion schemes under high-temperature (>200°C) environments.|
|Funding Source||American Recovery and Reinvestment Act of 2009|
|References||EERE Geothermal Technologies Programs|