Probabilistic assessment of deep geothermal resources in the Cornubian Batholith and their development in Cornwall and Devon, United Kingdom

IF 3.5 2区工程技术 Q3 ENERGY & FUELS

Geothermics Pub Date : 2024-06-26 DOI:10.1016/j.geothermics.2024.103081

Aysegul Turan , Christopher S Brown , Robin Shail , Ingo Sass

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引用次数: 0

Abstract

Geothermal energy could play a pivotal role in decarbonisation as it can provide clean, constant base-load energy which is weather independent. With a growing demand for clean energy and improved energy security, geothermal resources must be quantified to reduce exploration risk. This study aims to quantify the untapped resource-potential of the Cornubian Batholith as a geothermal resource for power generation and direct heat use. Recent field work, laboratory measurements and petrophysical characterization provides a newly compiled dataset which is inclusive of subsurface samples taken from the production well of the United Downs Deep Geothermal Power Project. Deterministic and probabilistic calculations are undertaken to evaluate the: total heat in place, recoverable resource, technical potential and potential carbon savings. The Cornubian Batholith is considered a petrothermal system which may require stimulation as an enhanced geothermal system. This study shows the batholith has significant heat stored of 8988 EJ (P50), corresponding to 366 EJ recoverable and a technical potential of 556 GW_th. When evaluating the potential for power generation (i.e., electricity) the P50 is 31 GW_e. The total carbon savings when generating electricity (P50) equates to 106 Mt.

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英国康沃尔郡和德文郡康努比岩浆岩深层地热资源及其开发的概率评估

地热能可提供不受天气影响的清洁、稳定的基本负荷能源，因此可在去碳化过程中发挥关键作用。随着对清洁能源和提高能源安全的需求不断增长，必须对地热资源进行量化，以降低勘探风险。本研究旨在量化 Cornubian 浴岩作为地热资源尚未开发的资源潜力，以用于发电和直接供热。最近的实地工作、实验室测量和岩石物理特征描述提供了一个新编制的数据集，其中包括从联合唐斯深层地热发电项目生产井中采集的地下样本。通过确定性和概率计算，对以下方面进行了评估：就地总热量、可回收资源、技术潜力和潜在的碳减排量。Cornubian 浴岩被认为是一个岩热系统，可能需要作为增强型地热系统加以激发。这项研究表明，该浴岩储存了 8988 EJ（P50）的大量热量，相当于 366 EJ 的可采储量和 556 GWth 的技术潜力。在评估发电（即电力）潜力时，P50 为 31 GWe。发电（P50）的碳减排总量相当于 1.06 亿吨二氧化碳当量。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Geothermics 工程技术-地球科学综合

CiteScore

7.70

自引率

15.40%

发文量

237

审稿时长

4.5 months

期刊介绍： Geothermics is an international journal devoted to the research and development of geothermal energy. The International Board of Editors of Geothermics, which comprises specialists in the various aspects of geothermal resources, exploration and development, guarantees the balanced, comprehensive view of scientific and technological developments in this promising energy field. It promulgates the state of the art and science of geothermal energy, its exploration and exploitation through a regular exchange of information from all parts of the world. The journal publishes articles dealing with the theory, exploration techniques and all aspects of the utilization of geothermal resources. Geothermics serves as the scientific house, or exchange medium, through which the growing community of geothermal specialists can provide and receive information.