在采用分布式声学传感而获取的钻探数据时被动地震的模型驱动处理,无需使用传统的钻探比特试点测量
Emad Al-Hemyari1,2, Roman Pevzner1,2, Konstantin Tertyshnikov1,2
1Centre for Exploration Geophysics, Curtin University, GPO Box U1987, Perth, WA 6845, Australia.
Sensors (Basel, Switzerland)
|February 13, 2026
概括
这项研究引入了一种使用分布式声学传感 (DAS) 数据的新的地震在钻井 (SWD) 处理工作流. 该方法成功地在没有试点信号的情况下恢复了地下速度和结构信息,简化了被动地震部署.
科学领域:
- 地质物理学 地质物理学
- 地震学 地震学
- 石油地质科学 石油地质科学
背景情况:
- 传统的地震在钻井 (SWD) 依赖于测量的钻头签名来处理被动的地震数据.
- 获取试点信号对于关联被动地震记录和确定传统SWD中的源触发时间至关重要.
- 在SWD处理中,当飞行员信号不可用时,就会出现挑战,需要从记录的波场中推断源定时和签名.
研究的目的:
- 为基于分布式声学传感 (DAS) 的SWD数据提供高级处理工作流程,这些数据在没有试点信号的情况下获取.
- 为了将被动SWD数据转化为活跃的地震等价物,以简化地下表征.
- 为了证明可靠的速度和结构信息从基于DAS的SWD数据在交叉井设置中的恢复.
主要方法:
- 开发了一个以旅行时间和地震建模为指导的处理工作流.
- 将被动SWD数据转换为活跃的地震数据等效.
- 应用旅行时间断层扫描和交叉井成像对转换的数据.
主要成果:
- 在没有试点信号的交叉井环境中,成功处理了用DAS获得的SWD数据集.
- 证明了从记录的波场中推断源时间和签名的能力.
- 从基于DAS的SWD数据中恢复可靠的速度和结构信息.
结论:
- 提出的工作流程允许简化和可扩展的部署被动地震在钻井工作流程.
- 可靠的地下速度和结构信息可以从基于DAS的SWD数据中获得,即使没有试点测量.
- 该方法使用在钻探过程中获得的被动地震数据来促进先进的地下表征.
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