Sulfide scaling in low enthalpy geothermal environments; A survey

Journal Article · Sat Dec 31 23:00:00 EST 1988 · Geothermics; (USA)

DOI:https://doi.org/10.1016/0375-6505(89)90012-6· OSTI ID:5385965

Criaud, A; Fouillac, C ^[1]

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1. Bureau de Recherches Geologiques et Minieres (BRGM), 45 - Orleans (France)

A review of the sulfide scaling phenomena in low-temperature environments is presented. While high-temperature fluids tend to deposit metal sulfides because of their high concentrations of dissolved metals and variations of temperature, pressure and fluid chemistry, low temperature media are characterized by very low metal content but much higher dissolved sulfide. In the case of the goethermal wells of the Paris Basin, detailed studies demonstrate that the relatively large concentrations of chloride and dissolved sulfide are responsible for corrosion and consequent formation of iron sulfide scale composed of mackinawite, pyrite and pyrrhotite. The effects of the exploitation schemes are far less important than the corrosion of the casings. The low-enthalpy fluids that do not originate from sedimentary aquifers (such as in Iceland and Bulgaria), have a limited corrosion potential, and the thin sulfide film that appears may prevent the progress of corrosion.

• OSTI ID: 5385965
• Journal Information: Geothermics; (USA), Journal Name: Geothermics; (USA) Vol. 18:1; ISSN GTMCA; ISSN 0375-6505
• Country of Publication: United States
• Language: English

Related Subjects

15 GEOTHERMAL ENERGY
150903* -- Geothermal Engineering-- Corrosion
Scaling & Materials Development
152001 -- Geothermal Data & Theory-- Properties of Aqueous Solutions
AQUIFERS
CHALCOGENIDES
CHEMICAL REACTIONS
CHEMISTRY
CHLORIDES
CHLORINE COMPOUNDS
CORROSION
CORROSIVE EFFECTS
DEVELOPING COUNTRIES
ENTHALPY
EUROPE
FLUIDS
FRANCE
GEOCHEMISTRY
GEOTHERMAL FLUIDS
GEOTHERMAL SYSTEMS
GEOTHERMAL WELLS
HALIDES
HALOGEN COMPOUNDS
HIGH TEMPERATURE
ICELAND
ISLANDS
LOW TEMPERATURE
PHYSICAL PROPERTIES
PRESSURE GRADIENTS
SCALING
SULFIDES
SULFUR COMPOUNDS
SURFACES
TEMPERATURE GRADIENTS
THERMODYNAMIC PROPERTIES
VARIATIONS
WELL CASINGS
WELLS
WESTERN EUROPE