在钻井过程中设计和实验研究一种新的液压工具,用于在钻井过程中堵塞流失材料 (LCM)
Guohua Wang1, Hailong Jiang2, Wei Li3
1Petroleum Engineering School, Southwest Petroleum University, Chengdu, 610500, China.
Scientific reports
|November 29, 2024
概括
这项研究引入了一种新的物理方法,用于控制钻井过程中流失的循环,使用液压工具将颗粒注入骨折中. 现场测试证实了其在密封结构和改善井口压力控制方面的有效性.
科学领域:
- 石油工程是石油工程中的一个.
- 钻井技术 钻井技术
- 井口的完整性 井口的完整性
背景情况:
- 失去循环是普遍存在的钻井问题,补救治疗成功率很低.
- 现有的流失材料 (LCM) 和技术往往表现不佳.
- 传统的治疗方法主要依赖于化学方法,限制了它们的有效性.
研究的目的:
- 提出和评估一种新的物理方法来控制和堵塞钻探期间流失的循环.
- 为了解决常规化学治疗失去循环的局限性.
- 通过改进的密封机制来增强井口压力控制 (WPC).
主要方法:
- 使用一种新的液压工具,将带有颗粒的钻井液注入形成骨折中.
- 工具产生的压差有助于粒子注入和密封.
- 诸如磨砂大理石,坚果和石墨等添加剂被用作密封剂.
- 数字模拟 (使用Fluent) 评估环形流量对液压工具喷气的影响.
- 现场测试验证了物理插头方法的性能.
主要成果:
- 液压工具有效地将钻井液和颗粒注入破裂中,从而创建一个牢固的密封.
- 密封机制隔离了井口液体压力,防止了断裂扩展.
- 应力理论的应用表明了井口压力控制 (WPC) 的改进.
- 数字模拟显示,喷气上环状流的干扰最小.
- 现场测试显示了显著的堵塞效应和改善的形成承压能力.
结论:
- 拟议的物理堵塞方法为失去循环的传统化学处理提供了可行的替代方案.
- 该技术有效地密封了断裂,并提高了井口的稳定性.
- 该方法显示出在油田行业广泛采用的巨大潜力.
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