张德平,孙苗苗,曹祥康,董泽华.油气工业缓蚀剂评价与腐蚀监测技术进展[J].表面技术,2020,49(11):1-12.
ZHANG De-ping,SUN Miao-miao,CAO Xiang-kang,DONG Ze-hua.Progress in Corrosion Inhibitor Evaluation and Corrosion Monitoring Technology in Oil Recovery Industries[J].Surface Technology,2020,49(11):1-12 |
| 油气工业缓蚀剂评价与腐蚀监测技术进展 |
| Progress in Corrosion Inhibitor Evaluation and Corrosion Monitoring Technology in Oil Recovery Industries |
| 投稿时间：2020-10-14 修订日期：2020-11-09 |
| DOI：10.16490/j.cnki.issn.1001-3660.2020.11.001 |
| 中文关键词: 油田腐蚀 缓蚀剂 腐蚀监测 智能加注 |
| 英文关键词:oilfield corrosion corrosion inhibitor corrosion monitoring intelligent injection |
| 基金项目:国家重大科技专项资助项目(2016ZX05016-002) |
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| Author | Institution |
| ZHANG De-ping | School of Petroleum Engineering, Northeast Petroleum University, Daqing 163318, China;National Energy and CO2 Flooding and Sequestration Technology Research Experiment Center, Songyuan 138000, China |
| SUN Miao-miao | Yantai Nanshan University, Yantai 265713, China |
| CAO Xiang-kang | Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
| DONG Ze-hua | Hubei Key Laboratory of Material Chemistry and Service Failure, School of Chemistry and Chemical Engineering, Huazhong University of Science and Technology, Wuhan 430074, China |
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| 中文摘要: |
| 油气开采行业由于井下管柱以及地面集输管线受高矿化度产液、CO2或H2S等的影响而遭受严重腐蚀，导致停工停产，甚至出现重大环境事故和经济损失。缓蚀剂是油气开采行业使用最为广泛的防腐蚀技术，当前缓蚀剂的评价方法主要包括失重法、极化曲线、交流阻抗、电化学噪声、恒电量法和电化学石英晶体微天平分析等。虽然室内评价技术比较成熟，但现场应用中由于流体复杂性和腐蚀产物包覆和FeS的导电性影响，导致现场效率与室内评价结果出现较大偏差，且缺乏可靠缓蚀剂现场评价方法。首先介绍了一些广泛使用的缓蚀剂快速评价方法，此外，结合现场腐蚀监测技术发展，介绍了电化学阻抗、电阻探针、磁阻探针、氢通量探头、场指纹电流法以及缓蚀剂残余浓度在线分析等用于监测缓蚀剂的现场效果，分析了各种缓蚀剂在线监测方案的优势与不足之处。最后还探讨了油田在线腐蚀监测与缓蚀剂智能加注管理方案。该方案不仅可有效降低设备腐蚀，还可通过比例积分微分(Proportion Integration Differentiation, PID)控制器，实现缓蚀剂的自适应加入，降低水处理成本，提高缓蚀剂使用的经济性。尽管当前油气田腐蚀在线监测技术已取得较大进展，但受制于油田腐蚀系统的复杂性，其检测精度与可靠性仍与实际要求有较大差距，大多数腐蚀监测技术对于局部腐蚀监测仍然十分粗略，难以对局部腐蚀速率和发生位置进行可靠预测，需要腐蚀科学工作者的进一步努力。 |
| 英文摘要: |
| Due to the influence of salinity, CO2 or H2S, the underground pipe column and surface gathering and transportation pipeline suffer from severe corrosion in oil and gas exploitation industry, which leads to shutdown and even serious environmental accidents and economic losses. Corrosion inhibitor is the most widely used anti-corrosion technique in the above industries and the current evaluation methods for corrosion inhibitor include weight loss, Tafel polarization, linear polarization, electrochemical impedance, electrochemical noise, coulomb discharging method, and quartz crystal microbalance. Although the indoor evaluation methods are relatively mature, in the field applications, due to the complex fluid composition and corrosion products, the inhibitor performance in field is greatly different from that in indoor test, and there is still lack of reliable field evaluation method for corrosion inhibitor. Some widely used evaluation methods for corrosion inhibitors were introduced firstly. In addition, combined with the development of field corrosion monitoring techniques, electrochemical impedance probe, electrical resistance probe, magnetic resistance probe, hydrogen flux probe, FSM field fingerprint current method and residual concentration analysis of corrosion inhibitors were introduced to monitor the field performance of corrosion inhibitors and analyze the advantages and disadvantages of various online monitoring schemes for corrosion inhibitors. Finally, the management scheme of online corrosion monitoring and intelligent injection of corrosion inhibitor in oil field was discussed, which not only effectively reduced the corrosion of oil and gas pipelines, but also realized appropriate addition of corrosion inhibitor by PID controller, thus reducing water treatment cost and improving the effectiveness and economy of corrosion inhibitor. Despite online corrosion monitoring techniques have made great progress in oil and gas industries, due to the complexity of oilfield corrosion, the precision and reliability still has a big gap from industrial requirements. Most corrosion monitoring techniques are still very rough for local corrosion monitoring, and cannot predict the local corrosion rate and occurrence location reliably, so corrosion engineers need to pay attention to further developing new corrosion monitoring solutions. |
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