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Corrosion Failure Analysis And Corrosion Prevention Practice Of Water Injection Pipeline In Middle East Carbonate Oilfield

Picture for Corrosion Failure Analysis And Corrosion Prevention Practice Of Water Injection Pipeline In Middle East Carbonate Oilfield
Available for download
Product Number: 51321-16672-SG
Author: Zhengrong Ye; Xiang Zhou; Weidong Jiang; Zhichao Qiu; Xiaodong Cui; Guohao Chen; Huachang Chi; Weixiao Li; Zhiwen Yang; Maomao Wang
Publication Date: 2021
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$20.00
$20.00

In order to build up formation pressure and maintain oil production, a carbonate oilfield in the Middle
East adopted water injection technology, then in less than two years, a number of corrosion perforation
failures were seen in the water injection pipeline. In this paper, several methods are used to find out
the pipeline failure mechanism, such as the corrosion simulation experiment, bacteria testing, scanning
electron microscopy (SEM) and X-ray diffractometer (XRD). The results show that the composition of
corrosion products was FeS, Fe3O4, FeCO3 and CaCO3, which created the possibility of under-deposit
corrosion. The localized corrosion was more serious under the condition of coexistence of 100 mg/L S2-
and bacteria than the condition of 100 mg/L S2- in the injected water. Deposition of scale and bacteria in
the injected water are the important factors for the pipelines' fast corrosion and leakage. The corrosion
prevention strategies of water quality modification and HDPE lining technology were proposed and
achieved obvious result.

In order to build up formation pressure and maintain oil production, a carbonate oilfield in the Middle
East adopted water injection technology, then in less than two years, a number of corrosion perforation
failures were seen in the water injection pipeline. In this paper, several methods are used to find out
the pipeline failure mechanism, such as the corrosion simulation experiment, bacteria testing, scanning
electron microscopy (SEM) and X-ray diffractometer (XRD). The results show that the composition of
corrosion products was FeS, Fe3O4, FeCO3 and CaCO3, which created the possibility of under-deposit
corrosion. The localized corrosion was more serious under the condition of coexistence of 100 mg/L S2-
and bacteria than the condition of 100 mg/L S2- in the injected water. Deposition of scale and bacteria in
the injected water are the important factors for the pipelines' fast corrosion and leakage. The corrosion
prevention strategies of water quality modification and HDPE lining technology were proposed and
achieved obvious result.

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This paper pertains to a study of an API 5L X-60, Carbon steel, injection water pipeline, which failed prematurely in 4 years after commissioning due to under-deposit corrosion. A detailed study was carried out to investigate the failure causes.

 
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