某油田核桃壳过滤器撬块内管线选材评价  

Evaluation of Material Selection for Pipelines in Walnut Shell Filter Skid in an Oilfield

作　　者：桂晶 邹晋 李浩 张成果 陈迎锋 王修云 GUI Jing;ZOU Jin;LI Hao;ZHANG Chengguo;CHEN Yingfeng;WANG Xiuyun(Safetech Research Institute,Beijing 102209,China;China National Oil and Gas Exploration and Development Company Ltd.,Beijing 100034,China;Huayou Senior Engineering Limited,Beijing 100120,China)

机构地区：[1]安科工程技术研究院(北京)有限公司,北京102209 [2]中国石油国际勘探开发有限公司,北京100034 [3]北京华油鑫业工程技术有限公司,北京100120

出　　处：《腐蚀与防护》2024年第9期100-106,共7页Corrosion & Protection

摘　　要：为解决中东某油田核桃壳过滤器撬块内管线腐蚀穿孔严重的问题,通过文献调研优选出316L不锈钢、3Cr低合金钢、抗菌钢及耐高温聚乙烯(PE-RT II)等四种管材,进一步通过相容性、施工可行性及经济性进行选材评价。结果表明:在相容性评价试验后,PE-RT II管材表面无溶解、气泡、开裂及变形,参照静液压强度外推曲线可知PE-RT II管材在相应工况下服役周期应能超过20 a;316L不锈钢、3Cr低合金钢和抗菌钢表面呈均匀腐蚀形貌,其中316L不锈钢为轻微腐蚀、3Cr低合金钢和抗菌钢为中度腐蚀,三种管材在相应工况下服役周期均应能超过25 a;PE-RT II管材可通过热熔焊接和电熔焊接施工,316L不锈钢、3Cr低合金钢和抗菌钢可通过焊接施工,四种管材均能满足在核桃壳撬块内的安装施工要求;PE-RT II管材经济性最佳。综上,优选PE-RT II管材。In order to solve the problem of serious corrosion and perforation of the pipeline in the walnut shell filter skid in an oilfield in the Middle East,four kinds of pipes,316L stainless steel,3Cr low alloy steel,antibacterial steel and polyethylene of temperature resistance(PE-RT II),were selected through literature research,and the material selection was further evaluated by compatibility,construction feasibility and economy.The results show that there was no dissolution,bubble,cracking and deformation on the surface of PE-RT II pipe after compatibility evaluation test.According to the extrapolation curve of hydrostatic strength,the service period of PE-RT II pipe under corresponding working conditions should be more than 20 a.The surface of 316L stainless steel,3Cr low alloy steel and antibacterial steel showed uniform corrosion morphology,among which 316L stainless steel was slightly corroded,3Cr low alloy steel and antibacterial steel were moderately corroded,and the service cycle of the three pipes under the corresponding working conditions should be more than 25 a.The PE-RT II pipe could be welded by hot melt welding and electrofusion welding,and the 316L stainless steel,3Cr low alloy steel and antibacterial steel could be welded.All four pipes could meet the installation and construction requirements in the walnut shell filter skid.PE-RT II pipe was the most economical.In summary,PE-RT II pipe was preferred.

关 键 词：核桃壳过滤器 耐高温聚乙烯(PE-RT II)管材 316L不锈钢 3Cr低合金钢 抗菌钢 选材 

分 类 号：TE986[石油与天然气工程—石油机械设备]