Subsurface Corrosion Challenges

OBJECTIVE

Produced water composition (especially chloride and bicarbonate ion concentrations) and presence/absence of elemental are important information required to select proper material for sweet and sour environment in high salininty production.

SCOPE

This course will address :

• Factors that would affect corrosion rates, depending on whether or not corrosion control procedures (i.e., corrosion inhibition and/or sulfur solvent additions) are employed to protect the production tubing, but would not necessarily impact materials selection from a resistance to environmental cracking perspective.
• Type of Corrosion-resistant alloys (CRA) production tubing might be needed if the reservoir fluids were too aggressive for steel production tubing, and corrosion mitigation practices were (or were deemed likely to be) ineffective.
• Flow modelling in Production Tubing and its impact on corrosion
• Susceptibility of material for environmental cracking
• The use of inhibitors for downhole corrosion control
• Coatings used for downhole applications (metallic and organic)
• Impact of well stimulation on corrosion and cracking of downhole tubings
• Corrosion of drilling fluids
• Corrosion monitoring of production tubings