Potential Calculation on the Oil-Gas Pipeline with Geosynthetic Clay Liners Based on BEM

Pengxiang Xing^1*, Yu Wang¹, Hailiang Lu¹, Lei Lan¹, Xishan Wen¹, Shulin Zhang²

¹School of Electrical Engineering, Wuhan University, Wuhan, China.
²China Liaohe Petroleum Engineering Co. Ltd., Panjin, China.

DOI: 10.4236/jpee.2014.24080                

Abstract

Put geosynthetic clay liners around underground oil-gas pipelines can reduce the potential damage to environment but it will also affect the distribution of cathodic protection current. Geosynthetic clay liners can be regarded as anisotropic soil structure and the potential distribution on the pipeline between two adjacent cathodic protection stations was calculated based on boundary
element method (BEM). The calculation results indicate that potential distribution on the pipeline with geosynthetic clay liner is lower than before. A 1500 m built pipeline with geosynthetic clay liners was selected to be calculated and to perform field test, which shows that the calculation results tally well with the field test results and the validity of the arithmetic in this paper was verified.

Keywords

Oil-Gas Pipeline; Geosynthetic Clay Liner; Cathodic Protection; Boundary Element Method (BEM)

Conflicts of Interest

The authors declare no conflicts of interest.

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