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Guardbridge Geothermal Technology Demonstrator Project Feasibility Report

Description
ISBN9781786521293
Official Print Publication Date
Website Publication DateMarch 23, 2016

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Compiled by
University of St Andrews
Written by Ramboll, Town Rock Energy, University of St Andrews, and Resource Efficient Solutions LLP

ISBN 978 1 78652 129 3 (Web only publication)
PPDAS 67484

This document is available in pdf format (17.3MB)
Appendix A is available in pdf format only (1.2MB)

Contents

Consortium Partners and Stakeholders

Executive Summary

Acknowledgements

1. Introduction
1.1 Project Scope
1.2 Objectives

2. Methodology
2.1 Overview of methods
2.1.1 Geological models
2.1.2 Geothermal well design and regional impacts
2.1.3 District heating network design and economic model
2.1.4 Environmental impacts and regulatory requirements
2.1.5 Stakeholder Engagement
2.2 Role of consortia partners
2.3 Data sources and key documents
2.4 Assumptions and limitations

3. Geothermal Model Development
3.1 Geological model
3.1.1 Background geology
3.1.2 Model construction
3.1.3 Production of simplified 3D geological model
3.2 Limitations of the geological model
3.3 Aquifer prospect evaluation
3.3.1 Scenario 1 - Well GB1
3.3.2 Scenario 2 - Well ES
3.3.3 Scenario 3 - Well GB2
3.3.4 Scenario 4 - Well GB2
3.4 Hydrogeological model
3.4.1 Regional groundwater flow system
3.4.2 Aquifer properties of the target formations
3.4.3 Dura Den Fault permeability
3.4.4 Hydrogeological model development
3.5 Play evaluation and de-risking
3.6 Regional impact of Guardbridge wells
3.6.1 Well GB1 - vertical well on site
3.6.2 Well ES - vertical well off site
3.6.3 Well GB-2 - deviated well on site

4. Heat Supply
4.1 Predicted aquifer properties at wells
4.1.1 Well GB-1
4.1.2 Well ES
4.1.3 Well GB-2
4.2 Well completion options and performance
4.2.1 Well GB-1 design
4.2.2 Well GB-1 design (deeper option)
4.2.3 Well ES design
4.2.4 Well GB-2 design
4.3 Well design and drilling
4.4 Well costs
4.5 Well risks and other drilling options
4.5.1 Lower cost drilling options
4.5.2 Other capital costs: water disposal
4.5.3 Well life operation and repair costs
4.6 Well engineering activities in Phase 2

5. Heat Demand Analysis
5.1 Identifying Potential Demand
5.2 Future Developments

6. Preliminary Network Analysis
6.1 Network Options and Phasing
1. FCO11 - Guardbridge
2. FCO12 - Guardbridge Phase 2
3. FCO21 - Leuchars Phase 1
4. FCO22 - Leuchars Phase 2
5. FCO23 - Leuchars Phase 3
6. FCO31 - Balmullo Phase 1
7. FCO32 - Balmullo Phase 2
6.2 Opportunity Assessment Tool
6.3 Network Analysis

7. Geothermal Heating Potential
7.1 Initial Estimates of Output
7.2 Final Heat Production Estimates

8. Network Design
8.1 Well location

9. Energy Centre Design
9.1 Combined heating and cooling operation

10. Economic Analysis
10.1 CAPEX
10.2 OPEX and REPEX
10.3 Revenue
10.4 Modelling results
10.4.1 Heating Customer Perspective
10.4.2 District Heating Company Perspective
10.4.3 Biomass energy centre perspective
10.4.4 Geothermal well and heat pump perspective
10.5 Carbon emissions
10.6 Sensitivity
10.7 Summary of Economic Analysis

11. Regulatory Considerations
11.1 Introduction to the environmental concerns
11.2 Regulatory requirements
11.3 Requirements for Phase 2 Stage

12. Stake Holder Management

13. Conclusions

14. Recommendations and Next Steps

15. References
15.1 Published articles and reports
15.2 Guidance and regulatory documents