51315-5713-Evaluation of Performance of Gas Condensate Inhibitors Tested with Different High Velocity Test Rigs

Available for download

Product Number: 51315-5713-SG

ISBN: 5713 2015 CP

Author: Andreas Prethaler

Publication Date: 2015

Member Price: $0.00

Non Member Price: $20.00

Price: $20.00

Qty:

An amine based CO2 corrosion inhibitors and an imidazoline based CO2 corrosion inhibitor have been tested in both a two-phase laboratory flow loop system and a jet impingement cell under conditions of a mature gas condensate well in Austria. After a detailed description of the experimental setups degradation rates of material API L-80 as function of flow velocity and inhibitor dosage are presented. Additionally residual inhibitor analysis was done to determine amount of consumed inhibitor. Influence of different chloride concentrations and addition of sand particles on inhibitor performance have been investigated. All results are discussed with respect to critical inhibitor concentration to reach nearly 100 % inhibitor efficiency. Inhibitor one exhibits as an active ingredient alkylamine dissolved in ethylene glycol and different alcohols and the effect of inhibitor two is basically based on imidazoline dissolved in different alcohols. Results demonstrate that both test rigs deliver comparable results with respect to inhibitor protection rates. Independent of superficial flow velocities (tested between 3 and 35 m/s) both inhibitors exhibit a good performance as long as dosed above their critical concentration. The critical concentration is clearly below 100 ppm to the liquid phase. Addition of chlorides affects the performance of the alkylamine based inhibitor significantly more than in case of the imidazoline. Keywords: flow induced corrosion CO2 corrosion inhibitor flow-loop jet impingement