Please use this identifier to cite or link to this item: http://hdl.handle.net/10524/19361

Review and problem definition of water/rock reactions associated with injection of spent geothermal fluids from a geothermal plant into aquifers

File Size Format  
489571.pdf 4.43 MB Adobe PDF View/Open

Item Summary

Title:Review and problem definition of water/rock reactions associated with injection of spent geothermal fluids from a geothermal plant into aquifers
Authors:Elders, Wilfred A.
Keywords:chemical analysis
geochemistry
geothermal fluids
groundwater
Hawaii
show 1 morehydrology
show less
Date Issued:Jul 1986
Publisher:Institute of Geophysics and Planetary Physics, University of California -- Riverside
Citation:Elders WA. 1986. Review and Problem Definition of Water/Rock Reactions Associated with Injection of Spent Geothermal Fluids from a Geothermal Plant into Aquifers. Riverside (CA): Institute of Geophysics and Planetary Physics, University of California -- Riverside.
Abstract:Among the technical problems faced by the burgeoning geothermal industry is the disposal of spent fluids from power plants. Except in unusual circumstances the normal practice, especially in the USA, is to pump these spent fluids into injection wells to prevent contamination of surface waters, and possibly in some cases, to reduce pressure drawdown in the producing aquifers. This report is a survey of experience in geothermal injection, emphasizing geochemical problems, and a discussion of approaches to their possible mitigation. The extraction of enthalpy from geothermal fluid in power plants may cause solutions to be strongly supersaturated in various dissolved components such as silica, carbonates, sulfates, and sulfides. Injection of such supersaturated solutions into disposal wells has the potential to cause scaling in the well bores and plugging of the aquifers, leading to loss of injectivity. Various aspects of the geochemistry of geothermal brines and their potential for mineral formation are discussed, drawing upon a literature survey. Experience of brine treatment and handling, and the economics of mineral extraction are also addressed in this report. Finally suggestions are made on future needs for possible experimental, field and theoretical studies to avoid or control mineral scaling.
Description:Report Number: UCR/IGPP-85/17; OSTI ID: 5293572; Legacy ID: DE86015084; ON: DE86015084
Pages/Duration:129 pages
URI/DOI:http://hdl.handle.net/10524/19361
Appears in Collections: Federal Documents
The Geothermal Collection


Please email libraryada-l@lists.hawaii.edu if you need this content in ADA-compliant format.

Items in eVols are protected by copyright, with all rights reserved, unless otherwise indicated.