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51315-6035-Validation of New Test Facility for Erosion-Corrosion Inhibition Prediction

Picture for Validation of New Test Facility for Erosion-Corrosion Inhibition Prediction
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In the past the detrimental effects of pure erosion CO2 corrosion (sweet corrosion) and chloride corrosion and the combined effects of erosion-corrosion.  This study introduces a new test facility and testing procedure that allows all three components to be measured simultaneously using a variety of testing techniques.

Product Number: 51315-6035-SG
ISBN: 6035 2015 CP
Author: Alyssa Hall
Publication Date: 2015
Industry: Test Method
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$20.00
$20.00

The harsh effects and costly losses due to erosion-corrosion in the oil and gas industry have made studying aspects of erosion corrosion and the additive of the two erosion-corrosion a high priority in recent years. Corrosion and the combined effects of erosion-corrosion have been more prevalent in recent years primarily as a result of a combination of improved oil collection techniques where CO2 is injected into the reservoirs as well as increased development of crude with higher quantities of H2S and CO2 from drilling in deeper wells. Corrosion prediction has become more important because of the difficulties in taking measurements in deeper wells and offshore drilling sites. In the past the detrimental effects of pure erosion CO2 corrosion (sweet corrosion) and chloride corrosion and the combined effects of erosion-corrosion had to be considered separately. This study introduces a new test facility and testing procedure that allows all three components to be measured simultaneously using a variety of testing techniques. This new facility uses a three cell plugged-tee test cell configuration designed to measure pure erosion pure corrosion and combined erosion-corrosion in a single test. Testing was completed using linear polarization resistance (LPR) electrical resistance (ER) and weight loss (WL) measurement techniques. Data from this project are being used to more accurately and effectively model and predict erosion-corrosion for a variety of field conditions.The effect of sand on inhibited erosion-corrosion rates is important for the prediction of inhibitor effectiveness. Since the new testing facility can account for all three metal loss components it can be used to show how the addition of sand particles change corrosion rates. It can also show how an inhibitor could affect sand erosion rates. To present these effects a Frumkin adsorption isotherm is used to show a shift in inhibitor effectiveness as a result of a constant erosion rate under varying chemical inhibitor concentrations. Inhibitor effectiveness is shown as a comparison between the bare metal surface coverage and the inhibitor concentration. The isotherms will be incorporated into an existing prediction program that will be used to predict erosion-corrosion rates under a variety of environmental conditions.

Key words: conference papers, conference papers 2015, 3-Cell E/C Test Facility, Erosion, Corrosion, Erosion-Corrosion, Sand

The harsh effects and costly losses due to erosion-corrosion in the oil and gas industry have made studying aspects of erosion corrosion and the additive of the two erosion-corrosion a high priority in recent years. Corrosion and the combined effects of erosion-corrosion have been more prevalent in recent years primarily as a result of a combination of improved oil collection techniques where CO2 is injected into the reservoirs as well as increased development of crude with higher quantities of H2S and CO2 from drilling in deeper wells. Corrosion prediction has become more important because of the difficulties in taking measurements in deeper wells and offshore drilling sites. In the past the detrimental effects of pure erosion CO2 corrosion (sweet corrosion) and chloride corrosion and the combined effects of erosion-corrosion had to be considered separately. This study introduces a new test facility and testing procedure that allows all three components to be measured simultaneously using a variety of testing techniques. This new facility uses a three cell plugged-tee test cell configuration designed to measure pure erosion pure corrosion and combined erosion-corrosion in a single test. Testing was completed using linear polarization resistance (LPR) electrical resistance (ER) and weight loss (WL) measurement techniques. Data from this project are being used to more accurately and effectively model and predict erosion-corrosion for a variety of field conditions.The effect of sand on inhibited erosion-corrosion rates is important for the prediction of inhibitor effectiveness. Since the new testing facility can account for all three metal loss components it can be used to show how the addition of sand particles change corrosion rates. It can also show how an inhibitor could affect sand erosion rates. To present these effects a Frumkin adsorption isotherm is used to show a shift in inhibitor effectiveness as a result of a constant erosion rate under varying chemical inhibitor concentrations. Inhibitor effectiveness is shown as a comparison between the bare metal surface coverage and the inhibitor concentration. The isotherms will be incorporated into an existing prediction program that will be used to predict erosion-corrosion rates under a variety of environmental conditions.

Key words: conference papers, conference papers 2015, 3-Cell E/C Test Facility, Erosion, Corrosion, Erosion-Corrosion, Sand

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