基于电阻方法的岩石核心定向实验协议实验协议
Jiahuan He1,2,3, Zhijuan Tang1,3, Qiang Kang1
1Exploration and Development Research Institute, Southwest Oil and Gas Field Company, PetroChina, Chengdu, Sichuan, China.
PloS one
|March 2, 2026
概括
一种新的非破坏性方法使用辐射电阻测量来定位地下岩核. 这种技术提高了地质和地力学分析的效率和准确性.
科学领域:
- 地质物理学 地质物理学
- 石油地质学 石油地质学
- 地质工程是地质工程.
背景情况:
- 精确的地下表征依赖于正确的核心方向,这对于传统的钻探方法来说是具有挑战性的.
- 超过99%的岩芯是通过传统钻探获得的,通常缺乏精确的定位数据.
- 现有的导向方法可能耗时,需要专门的软件.
研究的目的:
- 引入一种新的,非破坏性的方法来定位通过传统钻探获得的圆柱状岩核.
- 为了提供核心测量和下洞日志之间的直接相关性,绕过了对图像匹配软件的需求.
- 提高地质和地力学研究核心方向的效率和可扩展性.
主要方法:
- 使用对全直径圆柱体核心的离散辐射电阻测量.
- 直接关联的亚齐图斯电阻值与下洞电成像日志.
- 实施一种非破坏性技术,以保持核心完整性.
主要成果:
- 在异型水库 (井ST12) 中达到±15°的定向精度.
- 每个样本的测量时间缩短到不到8小时.
- 增加了运营商的吞吐量,每年大约150个样本,效率提高了3至3.75倍.
- 根据需要,证明了更好的测量准确性.
结论:
- 拟议的基于电阻的方法提供了一个具有成本效益和可扩展的解决方案,用于定向传统获得的核心.
- 这种技术通过提供可靠的核心定向,使得地质和地力学分析能够得到增强.
- 非破坏性和效率的提升使其在地下表征中广泛适用.
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