Borehole muography of subsurface reservoirs
Borehole muography of subsurface reservoirs
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地下储层的钻孔孔径成像
DOI：
10.1098/rsta.2018.0060
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发表时间：
2018
期刊：
影响因子：
--
通讯作者：
R. Mellors
中科院分区：
文献类型：
--
作者：
A. Bonneville;R. Kouzes;J. Yamaoka;A. Lintereur;J. Flygare;G. Varner;I. Mostafanezhad;E. Guardincerri;C. Rowe;R. Mellors
多年来，对活火山下的地下岩层或地质对象(如油气藏、矿藏、洞穴甚至岩浆管道系统)进行成像一直是地球科学家的主要探索。由于这些地下物体不能直接观测，因此发展了不同的间接方法。这些方法都是基于地下材料的某些物理性质的变化，这些材料可以从地面或钻孔中检测到。为了确定密度分布，已经开发了一种使用部署在钻孔中的宇宙射线Muon探测器的新成像技术，并成功地测试了第一个钻孔Muon探测器的原型。除了提供三维(或三维层析成像)地下密度的静态图像外，钻孔断层成像还可以了解密度随时间的变化，这在最近随着大量流体(主要是水和二氧化碳)注入地下多孔储层(例如含水层储存和回收、废水处理、提高石油采收率和碳固存)而变得非常重要。这引发了人们对水库泄漏风险和机械完整性的几个担忧。因此，通过地球物理方法，如断层摄影术，确定由流体引起的场尺度驱替是当务之急。这篇文章是西奥·墨菲会议特刊《宇宙射线多道摄影术》的一部分。
Imaging subsurface rock formations or geological objects like oil and gas reservoirs, mineral deposits, cavities or even magmatic plumbing systems under active volcanoes has been for many years a major quest of geoscientists. Since these subsurface objects cannot be observed directly, different indirect methods have been developed. These methods are all based on variations of certain physical properties of the subsurface materials that can be detected from the ground surface or from boreholes. To determine the density distribution, a new imaging technique using cosmic-ray muon detectors deployed in a borehole has been developed and a first prototype of a borehole muon detector successfully tested. In addition to providing a static image of the subsurface density in three dimensions (or three-dimensional tomography), borehole muography can also inform on the variations of density with time, which recently became of major importance with the injection of large volumes of fluids, mainly water and CO2, in porous subsurface reservoirs (e.g. aquifer storage and recovery, wastewater disposal, enhanced oil recovery and carbon sequestration). This raises several concerns about the risk of leakage and the mechanical integrity of the reservoirs. Determining the field scale induced displacement of fluids by geophysical methods like muography is thus a priority. This article is part of the Theo Murphy meeting issue ‘Cosmic-ray muography'.