Shining a new light on mining: developing spectral metrics for process control and decision tools in mining exploration and operation.

为采矿业带来新的曙光：为采矿勘探和运营中的过程控制和决策工具开发光谱指标。

• 批准号: RGPIN-2020-03887
• 负责人: Rivard, Benoit
• 金额: $ 3.72万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=750910
• 关键词: Shining; new; light; mining; developing

For mining exploration firms and mine operators, limited near real-time knowledge of the characteristics of geologic materials manipulated in and around mines impedes the development of efficiencies during exploration and mine exploitation. This applies for example to the characteristics of drill core and the assessment of the resources (e.g. quality of ore or shale reservoir). A long-term goal of my program is to meet these needs by conducting fundamental research in the analysis of hyperspectral imagery and later transforming the findings into an enabling technology. In this discovery cycle I will conduct studies focusing on three short term objectives: 1. Develop the real time mineral and geochemical characterization of shale core. I will focus on three research questions relevant to the characterization of shale reservoirs: i) Can one predict the total organic carbon and major element geochemical characteristics of shale core across a range of formations/basins? Here, focus is on expanding early findings across a range of major shale gas and tight oil plays; ii) Can one infer organic carbon phase relationships - kerogen, bitumen, pyrobitumen, and hydrocarbons? This is important because the specific organic carbon phase present in a shale formation dictates the type of producible hydrocarbon and relative permeability properties that are important to understanding flow rates; and iii) How many forms of silica can be discriminated? This influences geomechanical properties in a shale formation and thus fracturing potential. This research stands to provide direct means of assessing the quality of shale gas/oil reservoirs from drill core imagery. 2. Developing models to predict the geomechanical characteristics of shale drill core. To safely and effectively produce shale reservoirs through horizontal drilling and multi-stage fracking, the rock mechanics must be well characterized. This research stands to provide direct means of assessing the fracturing potential of shale gas/oil reservoirs from drill core imagery. Foreseen impact: Answers provided as part of objectives 1 and 2 open up the development of a shale classification scheme based on chips (point spectra at well site) an innovative and valuable application for industry to guide geosteering during drilling. 3. Advancing the development of mine wall and outcrop spectral imaging as a new field of remote sensing. Compared to drill core imagery, those of outcrops and mine walls have poorer spatial resolution (mm to cm size) and higher measurement noise. Can our recently developed spectral angle based band selection method improve the mapping of minerals and their chemistry in such settings? I will begin by examining dolomitic alteration that presents a range of compositional and textural characteristics. This research is relevant for guiding exploration efforts and exploitation of several types of resource deposits (oil and gas reservoirs and lead-zinc deposits).

对于采矿勘探公司和矿山运营商，对在矿山和周围及其周围操纵的地质材料特征的几乎实时知识有限，这阻碍了勘探和矿山开发期间效率的发展。例如，这适用于钻头的特征和资源评估（例如矿石或​​页岩储层的质量）。我计划的一个长期目标是通过在分析高光谱图像的分析中进行基本研究来满足这些需求，然后将发现转变为有利的技术。在这个发现周期中，我将进行关注三个短期目标的研究：1。发展页岩核心的实时矿物和地球化学表征。我将重点关注与页岩储层的特征相关的三个研究问题：i）一个人可以预测在一系列地层/盆地中页岩核的总有机碳和主要元素地球化学特征吗？在这里，重点是扩大一系列大型页岩气和紧密油脂的早期发现； ii）一个可以推断有机碳相的关系 - 动脉粥样硬化，沥青，拟硫酸氢和碳氢化合物？这很重要，因为在页岩形成中存在的特定有机碳相决定对理解流速很重要的可生产的碳氢化合物和相对渗透率的类型。 iii）可以区分多少二氧化硅？这影响了页岩形成中的地质力学特性，从而影响了电势。这项研究将提供直接的手段来评估钻头核心图像的页岩气/油库质量。 2。开发模型以预测页岩钻芯的地质力学特征。为了通过水平钻孔和多阶段压裂安全有效地生产页岩储层，必须很好地表征岩石力学。这项研究将提供直接的方法来评估钻头核心图像中页岩气/石油储层的破裂潜力。预见的影响：作为目标1和2的答案，基于芯片（井站点的点光谱）开发了页岩分类方案的开发，用于行业的创新且有价值的应用，以指导在钻探过程中指导GeoSteering。 3。推进矿墙和露头光谱成像的开发，作为新的遥感领域。与钻头的核心图像相比，露头和矿墙的图像具有较差的空间分辨率（MM至CM尺寸）和更高的测量噪声。我们最近开发的基于光谱角度的频带选择方法可以改善在这种情况下矿物质及其化学的映射吗？我将首先检查一系列构图和质地特征的白云岩变化。这项研究与指导勘探工作以及对几种类型的资源存款（石油和天然气储层和铅锌矿床）的开发有关。