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基于分层地球模型和等效流逆转的异常场提取:在新疆白石川钻井zk506的案例研究

Yi Yang^1,2,3, Jie Zhang^1,2,3, Qingquan Zhi^1,2,3

¹State Key Laboratory of Deep Earth Exploration and Imaging, The Institute of Geophysical and Geochemical Exploration, CAGS, Dongli, Tianjin 300300, China.

Sensors (Basel, Switzerland)

|September 19, 2025

概括

这项研究引入了一种新的方法,通过提取异常场来改进钻井过渡电磁 (BHTEM) 数据的解释. 这种技术可以准确地定位隐藏的矿石,提高矿产勘探的准确性.

科学领域:

地质物理学地质物理学
电磁主义电磁主义
矿产勘探矿产勘探矿产勘探矿产勘探

背景情况:

钻井孔暂时电磁 (BHTEM) 测量对于地下勘探至关重要.
相当的旋流逆转提供了快速的数据处理,但与背景场噪声作斗争.
当前方法的直接应用受到测量数据中强烈的背景信号的限制.

研究的目的:

开发一种用于准确的BHTEM数据反转和解释的创新方法.
为了应对在BHTEM测量中的强背景场的挑战.
为了使矿产勘探BHTEM数据的快速定量反转和解释.

主要方法:

使用分层地球模型模拟背景场.
通过"差异方法"提取纯异常场.
在孤立的异常场中应用等效的旋流反转.

主要成果:

成功确定了zk506钻孔附近隐藏的矿石体的空间位置和分布.
验证了zk507和zk508钻孔的发现,确定了一个向西北倾斜的矿石体.
证明了准确的BHTEM反转解释,纠正了以前的地质理解.

结论:

开发的方法有效地从BHTEM数据中提取纯异常.
纯异常的等价旋流反转使得快速的定量解释成为可能.
这种方法对于探索高导电性硫化物矿石具有重要意义,改善了地质洞察力.

关键词:

在BHTEM中异常场的提取异常场的提取相当于流的流.这是纯粹的异常.

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