RAPID CASING CORROSION IN HIGH TEMPERATURE LIQUID DOMINATED GEOTHERMAL FIELDS

Conference · Tue Jan 22 00:00:00 EST 1985

OSTI ID:892401

Bixley, P F; Wilson, D M

Downhole logging and workover operations on 12-20 year old wells in several high temperature, liquid-dominated geothermal fields in New Zealand has shown that severe corrosion has commonly occurred in the production casing string where this is unprotected by larger diameter casings. To date corrosion products from only one well have been examined in detail. These indicate that corrosion attack commences at the outer casing wall and continues at a rate as great as 0.8mm/year. Rapid corrosion has been attributed to neutral or slightly acid high bicarbonate waters formed by the absorption of steam and gas into shallow aquifers not directly connected to the deeper, high chloride reservoir.

• Research Organization: Ministry of Works and Development, Wairakei, New Zealand
• Sponsoring Organization: USDOE
• OSTI ID: 892401
• Report Number(s): SGP-TR-84; CONF-850107-32; TRN: US200623%%63
• Resource Relation: Conference: 10. annual workshop on geothermal reservoir engineering, Stanford, CA (US), 01/22/1985
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
15 GEOTHERMAL ENERGY
ABSORPTION
ACID CARBONATES
AQUIFERS
CHLORIDES
CORROSION
CORROSION PRODUCTS
GEOTHERMAL FIELDS
NEW ZEALAND
PRODUCTION
RESERVOIR ENGINEERING
STEAM
Geothermal Legacy