|
| Simulation Study on Influencing Factors of Sacrificial Anode Cathodic Protection Effect of Oil Pipeline of Lingshui Platform |
| Received:May 29, 2020 Revised:June 30, 2020 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2020.10.008 |
| KeyWord:submarine pipeline cathodic protection numerical simulation |
| Author | Institution |
| HOU Jing |
CNOOC Research Institute, Beijing , China ;CNOOC HaiNan Branch, Zhanjiang , China |
| LIANG Qing-wen |
CNOOC HaiNan Branch, Zhanjiang , China |
| ZHANG Yu |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao , China |
| LI Kai-wei |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao , China |
| HOU Jian |
State Key Laboratory for Marine Corrosion and Protection, Luoyang Ship Material Research Institute, Qingdao , China |
|
| Hits: |
| Download times: |
| Abstract: |
| The paper aims to study the sacrificial anode cathodic protection effect of seawater environmental factors and working conditions on its submarine pipelines. Aiming at the Lingshui platform, the first deep-water platform with independent intellectual property rights in China, the cathodic protection simulation calculation of pipelines was carried out based on boundary elements, focusing on the effects of different coating damage rates, seawater flow rate and seawater conductivity on the sacrificial anode protection of pipelines. As a result, the coating damage rate increased from 1% to 10%. With the same sacrificial anode protection scheme, the most positive cathodic protection potential of the pipeline increased by 102 mV; the seawater conductivity decreased from 4 S/m to 2 S/m. The positive cathodic protection potential increased by 10 mV; the seawater flow rate increased from 0 m/s to 4 m/s, and the most positive cathodic protection potential of the pipeline increased by 26 mV. The increase of coating breakage rate, decrease of seawater conductivity and the increase of seawater flow rate will reduce the cathodic protection effect. Therefore, in the design stage, the influence of environmental conditions on the cathodic protection effect needs to be considered to ensure reasonable cathodic protection effect. |
| Close |
|
|
|