A comparison between the simulation and experimental results of cathodic protection of oil well casings

Ghobadi Ali H.; Allahkaram Saeed R.; Parsa Mohammad H.

摘要

Abstract > Metallic structures such as oil well casings in contact with soil or submerged under water are subject to corrosion. Leaks that develop in the casing of a well, constitute a serious problem and are expensive to repair. Cathodic protection (CP) is the cost‐effective control of external well casing corrosion. There are certain methods to ensure that the applied CP should meet the required criteria. In CP of well casings, monitoring of potential values is often based on surface E ‐log ?I measurement which is a cost‐ and time‐consuming method. Simulation software and numerical methods often have been used to address this issue. In this paper, simulation of CP has been done by means of a computer software with finite element capability (ANSYS 11). Potential profiles were obtained by selecting different soil electrical conductivities (single‐ and multi‐layered media) and by changing applied current density values. Experimental procedure was established to determine the accuracy of simulation data. The results showed good agreement, especially in the single‐layered medium and at higher values of applied current. </abstract> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> <div class="translation abstracttxt"> <span class="zhankaihshouqi fivelineshidden" id="abstract"> <span>机译：</span><Abstract Type =“Main”XML：Lang =“en”> <标题类型=“main”>抽象</ title> > 金属结构如油井套管与土壤接触或浸没在水下的浸没物质受到腐蚀。在井中开发的泄漏构成严重的问题，修复昂贵。阴极保护（CP）是对外部孔壳体腐蚀的成本效益控制。有一些方法可以确保所应用的CP应符合所需的标准。在井外壳的Cp中，监测潜在值通常基于表面 e </ i> -日志？我</ i> 测量是一种成本和耗时的方法。仿真软件和数值方法通常已被用于解决此问题。在本文中，通过具有有限元件（ANSYS 11）的计算机软件来完成CP的模拟。通过选择不同的土壤电导率（单层和多层介质）并通过改变施加的电流密度值来获得潜在的曲线。建立实验程序以确定模拟数据的准确性。结果表明，良好的一致性，特别是在单层介质中和较高的施加电流值。 </ p> </摘要> </span> <span class="z_kbtn z_kbtnclass hoverxs" style="display: none;">展开▼</span> </div> </div> <div class="record"> <h2 class="all_title" id="enpatent33" >著录项</h2> <ul> <li> <span class="lefttit">来源</span> <div style="width: 86%;vertical-align: text-top;display: inline-block;"> <a href='/journal-foreign-24514/'>《Materials and Corrosion》</a> <b style="margin: 0 2px;">|</b><span>2019年第9期</span><b style="margin: 0 2px;">|</b><span>共7页</span> </div> </li> <li> <div class="author"> <span class="lefttit">作者</span> <p id="fAuthorthree" class="threelineshidden zhankaihshouqi"> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ghobadi Ali H.&option=202" target="_blank" rel="nofollow">Ghobadi Ali H.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Allahkaram Saeed R.&option=202" target="_blank" rel="nofollow">Allahkaram Saeed R.;</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Parsa Mohammad H.&option=202" target="_blank" rel="nofollow">Parsa Mohammad H.;</a> </p> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zkzz" style="display: none;">展开▼</span> </div> </li> <li> <div style="display: flex;"> <span class="lefttit">作者单位</span> <div style="position: relative;margin-left: 3px;max-width: 639px;"> <div class="threelineshidden zhankaihshouqi" id="fOrgthree"> <p>School of Metallurgy and Materials EngineeringCollege of Engineering University of TehranTehran Tehran Iran;</p> <p>School of Metallurgy and Materials EngineeringCollege of Engineering University of TehranTehran Tehran Iran;</p> <p>School of Metallurgy and Materials EngineeringCollege of Engineering University of TehranTehran Tehran Iran;</p> </div> <span class="z_kbtnclass z_kbtnclassall hoverxs" id="zhdw" style="display: none;">展开▼</span> </div> </div> </li> <li > <span class="lefttit">收录信息</span> <span style="width: 86%;vertical-align: text-top;display: inline-block;"></span> </li> <li> <span class="lefttit">原文格式</span> <span>PDF</span> </li> <li> <span class="lefttit">正文语种</span> <span>eng</span> </li> <li> <span class="lefttit">中图分类</span> <span><a href="https://www.zhangqiaokeyan.com/clc/7194.html" title="金属腐蚀与保护、金属表面处理">金属腐蚀与保护、金属表面处理;</a></span> </li> <li class="antistop"> <span class="lefttit">关键词</span> <p style="width: 86%;vertical-align: text-top;"> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=cathodic protection&option=203" rel="nofollow">cathodic protection;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=distribution of current&option=203" rel="nofollow">distribution of current;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=finite element method&option=203" rel="nofollow">finite element method;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=potential profiles&option=203" rel="nofollow">potential profiles;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=simulation&option=203" rel="nofollow">simulation;</a> <a style="color: #3E7FEB;" href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=well casing&option=203" rel="nofollow">well casing;</a> </p> <div class="translation"> 机译：阴极保护;电流分布;有限元法;潜在的轮廓;模拟;井套管; </div> </li> </ul> </div> </div> <div class="literature cardcommon"> <div class="similarity "> <h3 class="all_title" id="enpatent66">相似文献</h3> <div class="similaritytab clearfix"> <ul> <li class="active" >外文文献</li> <li >中文文献</li> <li >专利</li> </ul> </div> <div class="similarity_details"> <ul > <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/journal-foreign-detail/0704023575639.html">A comparison between the simulation and experimental results of cathodic protection of oil well casings</a> <b>[J]</b> . <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Ghobadi Ali H.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Ghobadi Ali H.,</a> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=Allahkaram Saeed R.&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor">Allahkaram Saeed R.,</a> <a 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</b><a class="enjiyixqcontent" href="/academic-degree-domestic_mphd_thesis/020313988395.html">基于脉冲电流的油井套管阴极保护效果评价方法研究</a> <b>[A] </b> <span> <a href="/search.html?doctypes=4_5_6_1-0_4-0_1_2_3_7_9&sertext=张涛&option=202" target="_blank" rel="nofollow" class="tuijian_auth tuijian_authcolor"> . 张涛</a> <span> . 2016</span> </span> </div> </li> </ul> <ul style="display: none;"> <li> <div> <b>1. </b><a class="enjiyixqcontent" href="/patent-detail/061202813691.html">一种油井套管阴极保护专用脉冲恒电位电源控制方法</a> <b>[P]</b> . <span> 中国专利： CN104467510B </span> <span> . 2018.04.06</span> </div> </li> <li> <div> <b>2. </b><a class="enjiyixqcontent" href="/patent-detail/061202639571.html">基于脉冲电流供电的油井套管阴极保护系统及其构建方法</a> <b>[P]</b> . <span> 中国专利： CN104532263B </span> <span> . 2017.11.10</span> </div> </li> <li> <div> <b>3. </b><a class="enjiyixqcontent" href="/patent-detail/06130405805069.html">Device for cathodic protection of casing strings of wells and oilfield pipelines against corrosion</a> <b>[P]</b> . <span> 外国专利：  RU181226U1 </span> <span> . 2018-07-06</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：阴极保护油井套管和油田管道的装置免受腐蚀 </span> </p> </li> <li> <div> <b>4. </b><a class="enjiyixqcontent" href="/patent-detail/06130405799923.html">METHOD OF CATHODE PROTECTION OF CASING STRINGS OF WELLS AND OIL-FIELD PIPELINES AGAINST CORROSION</a> <b>[P]</b> . <span> 外国专利：  RU2636540C1 </span> <span> . 2017-11-23</span> </div> <p class="zwjiyix translation" style="max-width: initial;height: auto;word-break: break-all;white-space: initial;text-overflow: initial;overflow: initial;"> <span>机译：井筒和输油管道防腐的阴极保护方法 </span> </p> </li> <li> <div> <b>5. </b><a class="enjiyixqcontent" href="/patent-detail/06130405799924.html">METHOD OF CATHODE PROTECTION OF CASING STRINGS OF WELLS AND OIL-FIELD PIPELINES AGAINST CORROSION</a> <b>[P]</b> . <span> 外国专利：  RU2636539C1 </span> <span> . 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