权益分类	功能权益	普通用户	{{item.name}}会员
{{category.name}}	{{benefitItem.name}}

Imaging the fine-scale velocity structure, the physical properties and the sedimentary faulting that controls the fluid flow within the gas-charged se

对精细尺度的速度结构、物理性质和控制充气SE内流体流动的沉积断层进行成像

基本信息

批准号：
2288424
负责人：
金额：
--
依托单位：
University of Southampton
依托单位国家：
英国
项目类别：
Studentship
财政年份：
2019
资助国家：
英国
起止时间：
2019 至无数据
项目状态：
已结题

来源：
https://gtr.ukri.org/projects?ref=studentship-2288424
关键词：
Imaging fine scale velocity structure

项目摘要

Carbon Capture and Storage is a low carbon technology which captures the CO2 emitted during power generation, to securely and permanently store underground, for example within depleted oil and gas fields. Securely storing the CO2 within a reservoir requires a good knowledge of the physical properties of the overburden and the associated fluid pathways. During burial of sediments, the porosity of sediments decreases and fluids migrate vertically through chimney and pipe structures created by hydro-fracturing. In order to assess the leakage potential of a CO2 storage reservoir, it is critical to develop an understanding of the formation mechanisms and the longevity of these chimney and pipe structures. Seabed craters caused by erupting fluids, called pockmarks, provide natural analogues for studying the fluid pathways and the physical properties of chimney and pipe structures. In 2017, a state of the art ocean bottom seismic survey was acquired around a natural gas escape zone, Scanner Pockmark, North Sea to gain knowledge about the physical processes related to gas escape from shallow sediments. The aim of this project is to determine the fine-scale velocity structure, and the physical properties of thin gas-charged layers and the sedimentary faulting that controls the fluid-flow.

碳捕获和储存是一种低碳技术，它捕获发电过程中排放的二氧化碳，并将其安全永久地储存在地下，例如在枯竭的油气田中。在储层中安全地储存二氧化碳需要对覆盖层的物理性质和相关的流体路径有很好的了解。在沉积物埋藏过程中，沉积物孔隙度降低，流体通过水力压裂形成的烟囱和管道结构垂直迁移。为了评估二氧化碳储存库的泄漏潜力，了解这些烟囱和管道结构的形成机制和寿命至关重要。海底陨石坑是由喷出的液体形成的，被称为麻坑，为研究流体路径和烟囱和管道结构的物理特性提供了天然的类似物。2017年，在北海的Scanner Pockmark天然气逸出带周围进行了最先进的海底地震调查，以了解与天然气从浅层沉积物逸出相关的物理过程。该项目的目的是确定精细尺度的速度结构、薄充气层和控制流体流动的沉积断层的物理性质。