Application of Chicory as Corrosion Inhibitor for Acidic Environments
- Yogesh Kumar Choudhary (Halliburton) | Anupom Sabhapondit (Halliburton) | Arunesh Kumar (British Petroleum)
- Document ID
- Society of Petroleum Engineers
- SPE Production & Operations
- Publication Date
- June 2013
- Document Type
- Journal Paper
- 268 - 276
- 2013. Society of Petroleum Engineers
- 3.2.4 Acidising, 5.4.10 Microbial Methods, 4.2.3 Materials and Corrosion
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- 342 since 2007
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During acidizing stimulation or cleanup operations, metal tubulars, downhole tools/valves, and surface lines are exposed to acidic fluids and are prone to corrosion. Because corrosion rates drastically increase in high-temperature wells, controlling corrosion is critical and must be dealt with carefully. In addition, corrosion protection is important for maintaining the integrity and long life of downhole tools installed in a well. Several corrosion inhibitors, such as quaternary ammonium compounds and propargyl alcohol-based compounds, have been effectively used in the industry. However, because of stringent environmental regulations, attention has focused on the development of new corrosion inhibitors that are environmentally benign. Food-grade products that are considered "green" chemicals have significant potential as corrosion inhibitors in the oil and gas industry.
In this paper, application of chicory as a corrosion inhibitor for high-temperature and strong-acidic conditions is discussed. Chicory is a perennial bush plant available in many parts of the world. The root of the chicory plant can be roasted and ground for use as a coffee substitute or additive. Chicory is environmentally acceptable and, being of plant origin, is widely recognized as biodegradable in nature. This study shows that chicory can provide corrosion protection for alloys such as N-80, 13Cr-L80, and 1010 steel in the presence of either inorganic or organic acids at temperatures up to 250°F (121°C). Considering its performance and lack of toxicity issues, chicory has significant potential for acid corrosion-inhibition applications. The mixing procedure for preparing the blend, experimental setup and test procedure, and laboratory results of high-pressure/high temperature (HP/HT) corrosion tests are discussed.
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