Sulfide scaling in low enthalpy geothermal environments; A survey

Journal Article · Sun Jan 01 00:00:00 EST 1989 · 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), Vol. 18:1; ISSN 0375-6505
• Country of Publication: United States
• Language: English

Related Subjects

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