METHOD AND APPLICATION OF GaPO4 CRYSTAL MICROBALANCE TO HIGH ACID CRUDE CORROSION TESTING

摘要

A new technique to measure corrosion rates in naphthenic crudes in a high temperature environment has been designed using a gallium phosphate (GAPO) crystal microbalance. The technique is highly sensitive and can measure instantaneous corrosion rates. Due to the high temperature stability of the GAPO crystals, this technique can be used to measure in the laboratory dynamic naphthenic acid corrosion rates of iron at the high temperatures that are prevalent in various locations in oil and gas production and refining facilities, therefore opening a new and more accurate method to study naphthenic corrosion.

主权项

1. A device for measuring the corrosivity of a high temperature or hydrocarbon based fluid by determining a mass density change from a metal layer deposited on a surface of a GaPO4 crystal microbalance, wherein said device comprises:
(a) a first chamber in fluidic contact with a second chamber, wherein each of said first and second chambers is configured to retain said fluid; and (b) said GaPO4 crystal microbalance disposed within said second chamber.