Pitting Corrosion of 13Cr Steel in Oxygen-free Completion Fluids of Organic Salt

doi:10.1007/s40195-012-0283-1

Acta Metallurgica Sinica (English Letters) ›› 2013, Vol. 26 ›› Issue (3): 271-276.DOI: 10.1007/s40195-012-0283-1

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Pitting Corrosion of 13Cr Steel in Oxygen-free Completion Fluids of Organic Salt

Lining XU, Yao MENG, Yunguang SHI,Yan LIU

Key Laboratory for Environmental Fracture (MOE), Institute of Advanced Materials and Technology, University of Science and Technology Beijing, Beijing 100083, China

Received:2012-12-31 Revised:2013-03-04 Online:2013-06-25 Published:2013-05-06
Contact: Lining XU
Supported by:
National Science & Technology Pillar Program(No. 2012BAK13B04)

Abstract

Abstract:

Corrosion behavior of 13Cr steel in oxygen-free completion fluids of the organic salt at 180℃ was studied. Cross-sectional morphologies of the corrosion products were observed by scanning electron microscopy. Energy dispersive spectrum (EDS) was used to study the element distribution of the corrosion product inside and outside the pits. The results show that the organic salt causes severe pitting corrosion of 13Cr steel. The width and depth of the pits increase simultaneously when the test duration prolongs, and potassium enriches inside the pits.

Key words: 13Cr steel, Pitting corrosion, Organic salt, Completion fluids

Lining XU, Yao MENG, Yunguang SHI,Yan LIU. Pitting Corrosion of 13Cr Steel in Oxygen-free Completion Fluids of Organic Salt[J]. Acta Metallurgica Sinica (English Letters), 2013, 26(3): 271-276.

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Pitting Corrosion of 13Cr Steel in Oxygen-free Completion Fluids of Organic Salt

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