辽河双台子地区钻井液体系的优选和应用

发布时间：2018-05-08 06:58

本文选题：双台子区块 + 泥页岩组分　；参考：《东北石油大学》2017年硕士论文

【摘要】：辽河油区双台子区块为辽河油田的重点区块,该区块内东营组和沙河街组地层的泥页岩地层厚度大、组分复杂、不稳定性强、埋藏深度深,在钻井施工中经常发生泥页岩不稳定引起的缩径坍塌,高温条件下钻井液性能不稳定等问题。结合生产实际,本文通过对双台子区块泥页岩组分的详细研究与分析,根据地层岩性的组分性质,找出与之匹配的钻井液处理剂和钻井液体系。通过对钻井液进行性能评价及对添加剂进行试验优选,并结合现场效果统计,最终优选出KCl聚合物钻井液体系和硅稳定剂钻井液,该体系具有良好的井壁稳定性能和抗高温性能;同时,根据该区块施工井的实际特点进行钻井液优化设计。优选的KCl聚合物钻井液体系在双兴1井进行应用,在应用过程中实时根据井下情况进行调整,增强了井壁稳定性、降低了井下故障、缩短了施工周期、提高了综合经济效益。
[Abstract]:Shuangtai block in Liaohe oil area is the key block in Liaohe oilfield. The shale formation of Dongying formation and Shahejie formation in this block is thick, complex, unstable and deep buried. The shrinkage collapse caused by shale instability and the instability of drilling fluid performance are often occurred in drilling operation. According to the production practice, this paper studies and analyzes the shale components in Shuangtai block in detail, and finds out the matching drilling fluid treatment agent and drilling fluid system according to the composition properties of formation lithology. KCl polymer drilling fluid system and silicon stabilizer drilling fluid were selected by evaluating the performance of drilling fluid and selecting additives, combined with field effect statistics. The system has good sidewall stability and high temperature resistance, at the same time, the drilling fluid optimization design is carried out according to the actual characteristics of the construction well in this block. The optimized KCl polymer drilling fluid system is applied in Shuangxing 1 well. In the process of application, the downhole stability is enhanced, the downhole fault is reduced, the construction period is shortened, and the comprehensive economic benefit is improved by adjusting in real time according to the downhole condition.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TE52

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