The exploration and development of oil and gas resources towards the direction of ultra-deep, low permeability, and unconventional in China. In addition, some oil and gas fields have developed into the middle or late stage, the application of various EOR technologies, such as acid fracturing, CO2 flooding, air foam flooding and polymer flooding, resulting in the service environment of oil and gas gathering pipelines becoming more and more complex and harsh, such as high temperature, high pressure, high H2S/CO2, Cl- and bacteria, corrosion failures became one of the biggest challenges of oil and gas gathering pipelines.
Product Number:
51322-17741-SG
Author:
Anqing Fu, Juntao Yuan, Zihan Chen, Xuanpeng Li, Naixin Lv, Wensheng Li, Lei Fan, Houbu Li
Publication Date:
2022
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The service environment of oil and gas gathering pipelines becoming more and more complex and harsh, resulting in frequent failure, which not only causes the loss of oil and gas resources, but also the environmental and safety issues. Therefore, this paper focuses on the internal corrosion characteristics and most concerned issues of the oil and gas gathering pipelines and its mitigation measures. Firstly, several typical corrosion-induced failures of oil and gas gathering pipelines are introduced, moreover, the internal corrosion characteristics and advanced understanding of corrosion causes and mechanisms are analyzed. Then, internal corrosion control techniques including inhibitor, coating, clad pipe, non-metallic pipe, and life extension techniques including PE pipe insertion lining repair, air pressure extrusion coating repair, local repair and reinforcement were introduced.