Menu
Search
Filters
Close
Menu

A Further Look At The Impacts Of Corrosion Inhibitor On Scale Prevention

Picture for A Further Look At The Impacts Of Corrosion Inhibitor On Scale Prevention
Available for download

Scale and corrosion inhibitors are commonly used in many oil and gas production systems to prevent inorganic deposition and to protect asset integrity. Scale inhibitor products are based on organic compounds with phosphate or carboxylic functional groups such as amino phosphonates, phosphate esters, phosphino polymers, polycarboxylate and polysulfonates,1 as shown in Figure 1. These anionic groups have strong affinity to alkaline earth cations and can adsorb on the active growth sites of scale crystal (Figure 2), resulting in stopping or delaying the scale formation process.

Product Number: 51322-17676-SG
Author: Qiwei Wang, Tao Chen, Hameed Al-Badairy, Sultan Alsubaie, Yasser Al-Jeshi, Mohammad Alsidan
Publication Date: 2022
Industries: Cathodic Protection , Corrosion Monitoring and Control , Coatings and Linings , Coatings
$0.00
$20.00
$20.00

In the previous work (paper C2021-16736), we presented the results on calcium carbonate deposition and inhibition in the presence of 50 ppm of corrosion inhibitors. Further studies were performed to investigate the influence of three corrosion inhibitors at high concentrations on calcium carbonate formation and the performance of scale inhibitors, to simulate the conditions where high corrosion inhibitor dosages are applied or during the early flow back stage after batch treatment.

The active ingredients are, respectively, quaternary ammonium, phosphate ester and fatty acid; imidazoline acetate and ethoxylated fatty amine; and quaternary ammonium compounds, in the three corrosion inhibitors. Scale inhibitors are based on polyacrylate, ATMP phosphonate, and DETPMP phosphonate. Tests were conducted at 85 oC using the dynamic tube blocking method and test brine was characterized with high TDS (~ 65,000 mg/L) and high calcium (~ 4,000 mg/L). Change in scale deposition rate was used to assess the corrosion inhibitor impact. Contrary to the reported findings with barium sulfate scale, results from this study showed that even with 500 ppm corrosion inhibitors, no noticeable decreases in scale inhibitor performance were observed. Instead, the corrosion inhibitor based on imidazoline acetate and ethoxylated fatty amine prevented calcium carbonate scale deposition entirely without scale inhibitor. Additional tests also showed that this corrosion inhibitor had a significant impact on the morphology of calcium carbonate scale precipitates.

In the previous work (paper C2021-16736), we presented the results on calcium carbonate deposition and inhibition in the presence of 50 ppm of corrosion inhibitors. Further studies were performed to investigate the influence of three corrosion inhibitors at high concentrations on calcium carbonate formation and the performance of scale inhibitors, to simulate the conditions where high corrosion inhibitor dosages are applied or during the early flow back stage after batch treatment.

The active ingredients are, respectively, quaternary ammonium, phosphate ester and fatty acid; imidazoline acetate and ethoxylated fatty amine; and quaternary ammonium compounds, in the three corrosion inhibitors. Scale inhibitors are based on polyacrylate, ATMP phosphonate, and DETPMP phosphonate. Tests were conducted at 85 oC using the dynamic tube blocking method and test brine was characterized with high TDS (~ 65,000 mg/L) and high calcium (~ 4,000 mg/L). Change in scale deposition rate was used to assess the corrosion inhibitor impact. Contrary to the reported findings with barium sulfate scale, results from this study showed that even with 500 ppm corrosion inhibitors, no noticeable decreases in scale inhibitor performance were observed. Instead, the corrosion inhibitor based on imidazoline acetate and ethoxylated fatty amine prevented calcium carbonate scale deposition entirely without scale inhibitor. Additional tests also showed that this corrosion inhibitor had a significant impact on the morphology of calcium carbonate scale precipitates.

Product tags
Also Purchased
Picture for A Remote Monitoring System Featuring GPS Synchronized Instant-Off Potential And Line-Current Measurements
Available for download

A Remote Monitoring System Featuring GPS Synchronized Instant-Off Potential And Line-Current Measurements

Product Number: 51322-17635-SG
Author: Andreas Junker Olesen, Lars Vendelbo Nielsen
Publication Date: 2022
$20.00

There are several ways to validate the performance of a cathodic protection (CP) system for buried pipelines. Over the years, pipeline networks and their corrosion challenges have become increasingly complicated, not least due to the many sources of both AC and DC interference that affects CP operation. Also, the various measurement techniques that can be applied to test CP effectiveness has increased over the years. Finally, the sheer number of buried pipeline miles has been constantly increasing.
A Methodology, Database, and Maps For Seasonally-Adjusted Soil Resistivity
Available for download

A Methodology, Database, And Maps For Seasonally-Adjusted Soil Resistivity

Product Number: 51322-18216-SG
Author: Thomas Hayden, Alfonso Rojas Garcia, Steve Peaslee, Joseph Mazzella, Paul Murray, Robert R. Dobos
Publication Date: 2022
$20.00

The electrical conductivity of the electrolyte is one of the key parameters in the electromechanics of corrosion. Highly conductive electrolytes will permit more current and increase corrosion rates. Conversely, resistive electrolytes will enable less current to flow until the necessary conditions for corrosion are no longer satisfied or slowed.
A Case Study On Microbiologically Influenced Corrosion In Oil Producing Well Flowlines
Available for download

A Case Study On Microbiologically Influenced Corrosion In Oil Producing Well Flowlines

Product Number: 51322-17924-SG
Author: Amer Jarragh, Sandip Kuthe, Sharad Londhe, Akhil Jaithlya, Abeer Rashed, Nadine El-Kaouri
Publication Date: 2022
$20.00

Oil field operating company’s (1) flowline network in North and West Kuwait (NWK) has over 3000 wells connected through 6” carbon steel pipelines flowing from wellhead to the nearest Gathering Center (GC). Untreated wet crude is transported through the flowlines to GC’s directly or passing through the Remote Headers and Manifold (RHM) to GCs. In RHM, mixing of the wet crude takes place before it is sent to GC’s via transfer lines for further separation.  The flowlines are laid aboveground except at road crossings where they are buried. 
Categories
Industry
Recently viewed
Popular tags
View all

Association for Materials Protection and Performance

© AMPP All Rights Reserved.
Membership Terms of Content Use
Contact Customer Support