Chemical stimulation techniques for geothermal wells: experiments on the three-well EGS system at Soultz-sous-Forêts, France

Rock matrix stimulation is a method of enhancing well production or injection within a broad range of challenging environments, varying from naturally fractured limestones to sandstones with complex mineralogy. A common and often successful stimulation option, matrix acidizing, utilizes acids that r...

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Bibliographic Details
Published in:Geothermics 2009-12, Vol.38 (4), p.349-359
Main Authors: PORTIER, Sandrine, VUATAZ, François-David, NAMI, Patrick, SANJUAN, Bernard, GERARD, André
Format: Article
Language:English
Subjects:
Earth Sciences
Earth, ocean, space
Engineering and environment geology. Geothermics
Exact sciences and technology
Geothermics
Sciences of the Universe
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Summary:Rock matrix stimulation is a method of enhancing well production or injection within a broad range of challenging environments, varying from naturally fractured limestones to sandstones with complex mineralogy. A common and often successful stimulation option, matrix acidizing, utilizes acids that react and remove mineral phases restricting fluid flow. Reviewed is the technology of chemical treatments available for oil, gas and geothermal wells and the key elements and results of the chemical reservoir stimulation program at the Soultz-sous-Forets, France, Enhanced Geothermal System Project.
ISSN:0375-6505
1879-3576
DOI:10.1016/j.geothermics.2009.07.001