CO2 Corrosion Behaviors of Tubing and Casing Steels in Simulation Produced Water for Deep Natural Gas Wells

DOI

10.2991/icaemt-15.2015.124How to use a DOI?

Keywords

CO2 Corrosion; Corrosion Products; Tubing and Casing Steels; Deep Natural Gas Wells; Xushen Gasfield

Abstract

The influence of temperature and CO2 partial pressure on tubing and casing steels widely used in Daqing Oilfield including J55, N80 and P110 steels in simulation water for deep natural gas wells with CO2 corrosion was studied, using autoclave, Scanning Electron Microscope (SEM), Energy Spectrum Analysis (ESA), X-Ray Diffraction (XRD). The results show that the average corrosion rate of the test steel increases rapidly at first as temperature rises until 60 , then decreases rapidly as temperature continues to rise; the average corrosion rate increases rapidly as CO2 partial pressure rises until a peak is reached, then tends to be flat as temperature continues to rise; CO2 corrosion products are mainly FeCO3 and CaMg(CO3)2.

Copyright

© 2015, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

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TY  - CONF
AU  - Nan Li
AU  - Dekui Xu
AU  - Wenhai Ma
AU  - Pingang Ma
AU  - Junliang Li
PY  - 2015/08
DA  - 2015/08
TI  - CO2 Corrosion Behaviors of Tubing and Casing Steels in Simulation Produced Water for Deep Natural Gas Wells
BT  - Proceedings of the 2015 International Conference on Advanced Engineering Materials and Technology
PB  - Atlantis Press
SP  - 643
EP  - 646
SN  - 2352-5401
UR  - https://doi.org/10.2991/icaemt-15.2015.124
DO  - 10.2991/icaemt-15.2015.124
ID  - Li2015/08
ER  -