The measurement and application of electro-kinetic measurements in hydrocarbon-bearing rock fractures

含烃岩石裂隙动电测量的测量及应用

• 批准号: 346253-2007
• 负责人: Glover, Paul
• 金额: $ 4.52万
• 依托单位: Université Laval
• 依托单位国家: 加拿大
• 项目类别: Research Tools and Instruments - Category 1 (<$150,000)
• 财政年份: 2006
• 资助国家: 加拿大
• 起止时间: 2006-01-01 至 2007-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=325727
• 关键词: measurement; application; electro; kinetic; measurements

Porous and fractured rocks and soils not only store fluids but also allow their movement through the earth. Consequently the study of fluid flow in rocks and soils is highly important to (i) provision of safe and plentiful water resources, (ii) production of oil and gas, and (iii) safe disposal of domestic, industrial and nuclear waste. Fluid flow and electrical flow are linked at a fundamental level by electro-kinetic phenomena, where fluid flow through a rock causes an electrical current to flow or vice versa. These phenomena are important because electrical signals measured before major earthquakes and around volcanoes are linked to fluid flow by electro-kinetic mechanisms. Accurate description of the mechanisms would enable us to improve the prediction of both earthquakes and volcanoes. The link may also allow fluid flow in the deep earth to be mapped from electrical measurements, aid the development of new oil, gas and water borehole tools, and provide methods for cleaning contaminated soils. There are two major problems. The first is the lack of an AC theory linking fluid flow and electrical conduction through electro-kinetic processes. The second is the current lack of understanding of the major controlling influences on fluid and electrical flow through rocks and soils. This project aims at overcoming these two problems by providing equipment to allow two pathways of research. The first is to measure the electro-kinetic properties of rocks in the laboratory and to develop a full AC theory for it. The second is to measure the electro-kinetic fluxes of fractured and porous rocks and to understand the microstructural parameters that control these flows. Each pathway will include experimental measurements, computer modelling and the development of fundamental theory providing tools that should allow us a previously unparalleled insight into the processes involving electrical and fluid flow in any porous medium. The results of these two pathways will be combined and applied to data existing from earthquakes (e.g., Parkfield), volcanoes (e.g., Piton la Fournaise) and underground reservoirs.

多孔和断裂的岩石和土壤不仅可以储存液体，还可以让液体在地球上移动。因此，岩石和土壤中的流体流动研究对于（i）提供安全和充足的水资源，（ii）石油和天然气的生产，以及（iii）家庭、工业和核废料的安全处置非常重要。流体流动和电流在基本层面上通过动电现象联系在一起，其中流体流过岩石会导致电流流动，反之亦然。这些现象很重要，因为在大地震前和火山周围测量到的电信号通过电动机制与流体流动相关。准确描述这些机制将使我们能够改进对地震和火山的预测。该链路还可以通过电测量来绘制地球深处的流体流动图，帮助开发新的石油、天然气和水钻孔工具，并提供清洁受污染土壤的方法。有两个主要问题。首先是缺乏通过动电过程将流体流动和电传导联系起来的交流理论。第二个是目前对通过岩石和土壤的流体和电流的主要控制影响缺乏了解。该项目旨在通过提供设备来实现两种研究途径来克服这两个问题。第一个是在实验室中测量岩石的电动特性并为其开发完整的交流理论。第二个是测量裂隙和多孔岩石的动电通量，并了解控制这些流动的微观结构参数。每个途径都将包括实验测量、计算机建模和基础理论的发展，提供工具，使我们能够对任何多孔介质中涉及电流和流体流动的过程有前所未有的洞察力。这两条路径的结果将被合并并应用于地震（例如 Parkfield）、火山（例如 Piton la Fournaise）和地下水库的现有数据。