论文-应对新木地面系统腐蚀防护技术研究.doc

XX大学 工程硕士专业学位论文 论文题目： 应对新木地面系统腐蚀防护技术研究 硕 士 生： 指导教师： 工程领域： Thesis for the Graduate Candidate Test Research on the XinMu floor system corrosion protection technology Candidate: Wang Lei Tutor: Wang Jun Field: Oil Field Chemistry Date of oral examination: 5th April, 2012 University: Northeast Petroleum University 应对新木地面系统腐蚀防护技术研究 摘 要 新木采油厂已经投产运行接近40年，近年来随着油田的大规模开采，已经入高含水、过度开发的阶段，地层环境的变化给开采带来了更大的挑战，同时给地面系统的设备带来了更大的压力。环境的多变性，采出水含量过高使得地面系统的腐蚀结垢现象逐年加剧，这已经成为新木采油厂地面系统正常生产的一重大瓶颈。本论文通过对新木采油厂各站水质变化的分析，归纳总结出结垢及腐蚀现象的原因及发展趋势。通过对水质进行分析，确定氯离子含量高、水中细菌的存在是引起腐蚀的主要原因；钙离子、镁离子、碳酸根离子和碳酸氢根离子是引发结垢的主要原因。实验研究分析确定通过添加JYHZ-03型和JYHZ-01型mm/a，阻垢率几乎达到100%，水中杂质含量和细菌含量均减少。对新木采油厂地面系统的结垢防护技术进行了系统的研究，分别介绍了化学物理除垢法、物理除垢法以及化学除垢法在现场的应用，比较了各种方法的优缺点及适用范围，这些除垢防护技术的实施，缓解了油田地面系统设备、管线结垢严重的现状，在各区域范围内结垢现象均得到了有效的减缓，平均排量大幅度增高，除垢前后最大相差11.1m3/d，日外输液流量增大至1777.5m3/d，掺输压力由原来的1.8MPa下降到0.6MPa，结垢速度由7.5mm/a下降至2mm/a，经过除垢处理，各系统均运行平稳。 关键词：新木采油厂，地面系统，除垢，防腐  Research on the XinMu floor system corrosion protection technology ABSTRACT Xinmu oil production plant has been developed 40 years, now it has entered into high water-content stage as large-scale exploitation. The variation of stratum environmental brings new challengehas to petroleum recovery, and gives pressure to ground equipment. The corrosion and scaling of surface system are serious year by year due to the complexity of environment and high water content, which became bottleneck to normal production of Xinmu Plant. The causes and developing trends of corrosion and scaling of surface system have been concluded on the basis of analysis of water quality variation. Then found that high content of Cl- and bacteria in water are the main reason of corrosion and Ca2+, Mg2+, CO32. and HCO3. are the main cause for scaling. The corrosion and scaling in oilfield could be effectively relieved the addition of JYHZ-03 and