Corrosion monitoring
Materials Selection and Corrosion Considerations for Low Enthalpy Geothermals Wells

There are several corrosion monitoring methods that can be used to assess the integrity of the producer and injector wells. Some of these include:

• casing Log whereby the tubing is pulled and a casing inspection tool using electromagnetic sensors is pulled through the intermediate casing. A baseline casing inspection is recommended at the start of a well’s life, as the baseline “signature” can be used to validate metal loss indications on subsequent logs;

• visual inspection of the producer tubing and ESP may be carried out during routine maintenance of the ESP. Furthermore, a portable tubing inspection rig using electromagnetic techniques can be used to scan the ID/OD wall surfaces;

• ultrasonic, radiographic, and visual inspection may be performed on the wellhead equipment (valves,...