Research universal combined inhibitor for the oil and gas industry
https://doi.org/10.31615/j.corros.prot.2020.96.2-4
Abstract
Using the gravimetric method, the inhibitory efficiency of the combined inhibitor with respect to hydrogen sulfide and carbon dioxide corrosion of St3 steel in model produced water MI was studied. Corrosion tests were carried out in 0,5 liter sealed vessels on St3 samples of size 30х20х1.
Gossypol resin + MARZA was used as a multifunctional combined inhibitor. Diesel fuel and kerosene were used as solvent. It has been established that the protective effect of using a multi-functional combined inhibitor in formation water with oil containing hydrogen sulfide and carbon dioxide using kerosene as a solvent ranges from 75 to 96 and for diesel as 80 to 100.
The combined inhibitor allows to achieve in the MI medium containing hydrogen sulfide and carbon dioxide in the process of daily testing the corrosion rate of steel is about 0,04 g/m2·h. only in a concentration of not less than 70 mg/l. However, with an increase in the duration of the test by an order of magnitude, a similar corrosion rate is observed already at an inhibitor concentration of 50 mg/l. The same is characteristic of carbon dioxide and hydrogen sulfide - carbon dioxide solutions.
About the Author
M. B. Adygezalova
Azerbaijan State University of Oil and Industry
Azerbaijan
Azerbaijan
Mehpara B. Adigezalova, Ph.D. in Сhemistry, associated
Professor
16/21, Azadliq av., AZ 1010, Baku
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For citations:
Adygezalova M.B. Research universal combined inhibitor for the oil and gas industry. Theory and Practice of Corrosion Protection. 2020;25(2):34-44. (In Russ.) https://doi.org/10.31615/j.corros.prot.2020.96.2-4
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