埋地钢质管道腐蚀防护系统模糊评价贺焕婷
第36卷第3期（2017.03）行业论坛
摘要：为保证理地钢质金属管道的安全运行，掌提其肩蚀防护系统的安全现状，利用模赖综合评价法对影响埋地钢质管道肩蚀防护系统的各项指标建立模潮集，
采用层次分析法确定其指标
的权重大小，对埋地钢质管道的离蚀防护系统进行分城评价，通过非开挖检测和开挖验证，依据检测结果对其高蚀防护系统进行综合评价。以青海油田涩北气田某管道为例，通过对此管道外防高层状况、阴极保护有效性、土缘离蚀性、杂散电流干扰、排流保护效果5个方面的非开挖检测，根据检测结果对该埋地钢质管道的高蚀防护系统进行综合评价，得出该管道的高蚀防护
系统等级为良。同时对该管道的防腐层外观、
防高层厚度、
管道壁厚进行开挖验证，开挖5处探
坑内的管道均未发现明显的外壁高蚀，防腐层厚度基本符合要求，该管线的扇蚀程度为I级，与模糊综合评价法的结果吻合。
模期综合评价方法简单易行、操作方便，其评价结果可以指导
生产实践，具有一定的工程应用价值，
关键词：埋地钢质管道；腐蚀防护；模糊评价：检测：验证 Doi : 10.3969/j.issn.10066896.2017.3.001
The Fuzzy Evaluation of Buried Steel Pipeline Corrosion Protection System He Huanting
Abstract: To ensure the safe operation of buried steel metal pipes and master the safety status of its corrosion protection system, α comprehensive eveluation of the corrosion protection system should be aaoasasoa is used to establish fuzzy sets of indexes for the corrosion protection system of buried steel pipes and the
weight of its indicators could be determined by using the analytic hierarchy process.
tection system of buried steel pipes wds graded and evaluated.
Qinghai Oilfield as an example, spection which include 5
corrosion,
and impurity curren
the pipe is good.
The corrosion pro
Taking a pipeline in Sebei gas field of
evaluation is based on the test results of trenchless in
comprehensive
cathode protection effectiveness, soil
interference,
concluded that the corrosion protection system of
the appearance and the thickness of the coating, the wall thick
At the same time.
ness of the pipes are verified.
Excavation of the five pits within the pipeline did not find significant ex
ternal wall corrosion, the thickness of the coating is basically in line with the requirements, the corro* sion degree of the pipeline is grade I , which consistent with the results of fuzzy comprehensive evalu* ation method. The fuzzy comprehensive evaluation method is simple and easy to operate, and its eval
uation result can guide the production practice and have certain engineering application value. Key words: buried steel pipeline; corrosion protection; fuzzy eveluation; detect; verify
影响埋地管道外防腐层腐蚀破坏的因素很多，目前国内对外防腐层检测技术通常是使用单一仪器对单一因素的检测，而不同检测方法的检测原理和检测精度各异，应用范围和抗干扰能力不同，在不同的影响因素和使用条件下，得到检测结果不尽相
青海油田分公司钻案工艺研究院
油气田地面工程https/wwwayqtdmgc.com 万方数据
同，导致评价效果带有一定的局限性。因此，综合考患影响埋地管道腐蚀防护系统的不同影响指标，依据一定的标准，选用相对合理有效的检测方法结合多指标信息融合技术进行综合评判，才能得到该管线的腐蚀防护系统评价结果，
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