Corrosion behavior of 13Cr casing in cement synthetic pore solution

A. Sengupta, J. Beck, H. Zhao, R. Schatz, M. Ziomek-Moroz, S. N. Lvov

Research output: Chapter in Book/Report/Conference proceedingConference contribution

3 Scopus citations

Abstract

A test procedure was designed and employed for exposure and degradation testing of well cements in a simulated downhole environment of offshore deep drilling. A Class H cement sample was crushed to coarse grains and was exposed to 5 % mass NaCl(aq) solution in contact with CO2 at 100 °C and 10 MPa for 200 hours. Key ionic species were identified from the aqueous phase from the testing to develop the cement synthetic pore solution (CSPS) recipe. The CSPS was then used for corrosion characterization of high chromium well casing steel at the same conditions of the cement exposure for 60 hours. The corrosion potential in the measurements ranged between-0.4 and-0.5 V vs. SHE. The average corrosion rate of the steel samples was on the order of 0.1 mm/year, representing a worst-case scenario for degradation of the cement material, but significant for critical steel components like a well casing.

Original languageEnglish (US)
Title of host publicationCorrosion General Session
EditorsR. Buchheit
PublisherElectrochemical Society Inc.
Pages37-50
Number of pages14
Edition17
ISBN (Electronic)9781607685395
DOIs
StatePublished - 2015
EventSymposium on Corrosion General Session - 227th ECS Meeting - Chicago, United States
Duration: May 24 2015May 28 2015

Publication series

NameECS Transactions
Number17
Volume66
ISSN (Print)1938-5862
ISSN (Electronic)1938-6737

Other

OtherSymposium on Corrosion General Session - 227th ECS Meeting
CountryUnited States
CityChicago
Period5/24/155/28/15

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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    Sengupta, A., Beck, J., Zhao, H., Schatz, R., Ziomek-Moroz, M., & Lvov, S. N. (2015). Corrosion behavior of 13Cr casing in cement synthetic pore solution. In R. Buchheit (Ed.), Corrosion General Session (17 ed., pp. 37-50). (ECS Transactions; Vol. 66, No. 17). Electrochemical Society Inc.. https://doi.org/10.1149/06617.0037ecst