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Subsection corrosion inhibition of acidic-oxidized polymer degradant in offshore oil field

Yanhua Zhu (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Southwest Petroleum University, Chengdu, China)
Liqiang Zhao (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Southwest Petroleum University, Chengdu, China)
Pingli Liu (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Southwest Petroleum University, Chengdu, China)
Ming Yang (State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation Engineering, Southwest Petroleum University, Chengdu, China)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 30 July 2018

Issue publication date: 1 October 2018

98

Abstract

Purpose

This paper aims to introduce a method to reduce corrosion caused by acidic-oxidized polymer degradant through subsection injection with different inhibitor.

Design/methodology/approach

This paper introduced a method to reduce corrosion caused by acidic-oxidized polymer degradant through subsection injection with different inhibitor.

Findings

The experimental results indicated that the influence of pre-corrosion status on corrosion rate and effectiveness of corrosion inhibitor are significant. The corrosion inhibitors in both injection stage inhibited the corrosion process by preventing the contact of corrosive medium and steel surface through formation of a protective film on the surface of N80 steel. The corrosion rate of polymer degradant can be reduced to 0.63 g/m 2 h through subsection injection with different inhibitor.

Originality/value

This result will increase the production of polymer injection plugging wells through expanding the application of acidic-oxidized polymer degradant.

Keywords

Citation

Zhu, Y., Zhao, L., Liu, P. and Yang, M. (2018), "Subsection corrosion inhibition of acidic-oxidized polymer degradant in offshore oil field", Anti-Corrosion Methods and Materials, Vol. 65 No. 5, pp. 451-457. https://doi.org/10.1108/ACMM-01-2018-1888

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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