[1]张 萌,张骁勇,王吉喆.X80管线钢在不同矿化度油田采出液中的腐蚀行为研究[J].焊管,2019,42(2):7-10,18.[doi:10.19291/j.cnki.1001-3938.2019.2.002]
 ZHANG Meng,ZHANG Xiaoyong,WANG Jizhe.Corrosion Behavior of X80 Pipeline Steel in the Different-salinity Oilfield Fluids[J].,2019,42(2):7-10,18.[doi:10.19291/j.cnki.1001-3938.2019.2.002]
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X80管线钢在不同矿化度油田采出液中的
腐蚀行为研究
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《焊管》[ISSN:1001-3938/CN:61-1160/TE]

卷:
42
期数:
2019年第2期
页码:
7-10,18
栏目:
试验与研究
出版日期:
2019-02-28

文章信息/Info

Title:
Corrosion Behavior of X80 Pipeline Steel in the Different-salinity Oilfield Fluids
文章编号:
10.19291/j.cnki.1001-3938.2019.2.002
作者:
张 萌张骁勇王吉喆
 西安石油大学 材料科学与工程学院, 西安 710065
Author(s):
ZHANG Meng ZHANG Xiaoyong WANG Jizhe
College of Material Science and Engineering, Xi’an Shiyou University, Xi’an 710065, China
关键词:
X80管线钢矿化度腐蚀速率腐蚀产物
Keywords:
X80 pipeline steel salinity corrosion rate corrosion products
分类号:
TG172.8
DOI:
10.19291/j.cnki.1001-3938.2019.2.002
文献标志码:
A
摘要:
为了研究X80管线钢在不同矿化度油田采出液中的腐蚀行为,利用高温高压釜动态模拟试验研究了在60 ℃、CO2分压1.5 MPa、流速1.5 m/s、含水率40%条件下不同矿化度对X80管线钢在模拟油田采出液中的腐蚀情况,并利用扫描电镜(SEM)、能谱仪(EDS)和X射线衍射仪(XRD)对试样表面腐蚀产物形貌和成分进行了分析。结果表明,随矿化度增加,X80钢平均腐蚀速率降低,腐蚀形态呈现严重局部点蚀、轻微点蚀和均匀腐蚀的变化规律;腐蚀产物膜厚度随矿化度降低而减小,在矿化度为20 g/L时,试验钢的腐蚀最为严重,产物膜最厚,腐蚀产物主要为FeCO3及少量Fe和CaCO3。
Abstract:
In order to make X80 pipeline steel use as crude oil gathering pipeline, the dynamic simulation test of high temperature autoclave was used to study the corrosion of X80 pipeline steel in simulated oilfield production fluid with different salinity under the conditions of temperature 60 ℃, CO2 partial pressure 1.5 MPa, flow rate 1.5 m/s and water content 40%. The morphology and composition of the corrosion products on the surface of the samples were analyzed by scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS) and X-ray diffractometry (XRD). The results show that the average corrosion rate of X80 steel decreased with the increasing salinity, and the corrosion morphology showed severe local pitting, slight pitting and uniform corrosion with the change of salinity. The corrosion product film thickness decreases with the decrease of salinity. At 20 g/L, the corrosion of the test steel was the most serious, and the product film is the thickest. The corrosion products are mainly FeCO3, a small amount of Fe and CaCO3.

参考文献/References:

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备注/Memo

备注/Memo:

收稿日期:2018-09-26

基金项目: 陕西省自然科学基金“高钢级管线钢摩擦焊焊接接头形成机理研究”(项目编号2018JM5076 )。
作者简介:张  萌(1993—),女,硕士, 主要从事金属材料腐蚀与防护研究。

更新日期/Last Update: 2019-03-20