Primary Analyses of Corrosive Cause of Gathering and Transportation Pipelines in Xingnan Region

Gathering and transportation pipelines corrode seriously in Xingnan Region of the Fifth Daqing Oil Factory, and pipeline perforation occurred frequently. Testing methods such as ion component analysis, bacteria analysis and corrosion velocity detection combined with the practical production analysis were used to study the corrosive perforations reasons of the gathering and transportation pipelines. It is concluded that the perforation resulted from underscale corrosion induced by SRB, Cl-, HCO3-, etc.