新型高温高密度盐水钻井液研究

发布时间：2018-05-03 18:38

本文选题：高温高密度盐水钻井液 + 高温交联　；参考：《钻井液与完井液》2017年03期

【摘要】：针对中国高温高密度盐水钻井液普遍存在的"使用处理剂种类过多,加量过大,钻井液老化后HTHP造壁性和流变性难以控制,配制成本和维护成本居高不下"的难题,分析长期攻关而至今没能很好解决的原因,在此基础上提出了"以利用钻井液中处理剂高温交联作用为基础,结合使用优化重晶石级配以解决高密度钻井液黏度高、HTHP失水量大、且性能很难调控的难题,综合形成了高温高密度盐水钻井液研究"新的技术路线,并由此研发出性能好(HTHP失水量低,流变性良好……)而处理剂种类少(共4种)、总用量大幅度降低(仅为现用量的1/2~1/3)的高温高密度盐水钻井液体系,而且具有高温条件下使用性能越来越好,性能维护方便的潜力和趋势,为有效解决中国高温高密度盐水钻井液多年未能很好解决的技术难题,提供一条可行的途径。
[Abstract]:In view of the common problems of high temperature and high density brine drilling fluid in China, such as too many kinds of treating agents and too large amount of additives, it is difficult to control the wall-building property and rheology of HTHP after drilling fluid aging, and the cost of preparation and maintenance is high. This paper analyzes the reasons why the problem has not been solved well for a long time, and puts forward that the solution of high density drilling fluid with high viscosity and high HTHP water loss is based on the use of high temperature crosslinking effect of treating agent in drilling fluid and optimization of barite gradation. It is difficult to control the performance of the drilling fluid. A new technical route for the study of high temperature and high density brine drilling fluid is formed, and a good performance of HTHP with low water loss and good rheology is developed. However, the high temperature and high density brine drilling fluid system with less kinds of treating agents (4 kinds of treatment agents, total dosage of which is only 1 / 2 / 1 / 3 of the current dosage) has the potential and trend of better performance and easier maintenance under high temperature conditions. This paper provides a feasible way to solve the technical problems of high temperature and high density brine drilling fluid in China for many years.
【作者单位】：中海油田服务股份有限公司油田化学事业部;油气藏地质及开发工程国家重点实验室·西南石油大学;西南石油大学化学化工学院;
【分类号】：TE254

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