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The 5Th London Geothermal Symposium The 5th London Geothermal Symposium 25 October 2016 . The Geological Society ABSTRACT BOOK Convenors Charlotte Adams (Durham University) Guy Macpherson-Grant (EGS Energy) David Townsend (Town Rock Energy) Potential UK Geothermal Targets Background image: Ásgeir Eggertsson, Krafla geothermal power plant in Iceland, colour edited version (Creative Commons). (Creative edited version colour in Iceland, plant power geothermal Krafla Eggertsson, Ásgeir image: Background 5th London Geothermal Symposium CONTENT PAGE Conference programme Pages 2 - 3 Abstracts & biographies (in programme order) Pages 4 - 42 Fire safety information & floor plan Pages 43 - 44 October 2016 Page 1 5th London Geothermal Symposium 12.30 Registration & tea, coffee 13.00 Welcome Address Session 1: Geothermal Overseas 13.05 Technical developments in geothermal systems in the Netherlands Floris Veeger, Veegeo Energy 13.20 Seeking a successful business model for low temperature geothermal in Denmark David Simmons, GEOOP 13.35 History of geothermal utilisation in India- Opportunities for future development Ritesh Arya, International Sustainable Energy Organisation 13.50 Questions & discussion Session 2: Innovation, Investment & Policy 14.00 Single well deep geothermal heat projects in the UK Ryan Law, GEON Energy 14.15 Mine Water Treatment Schemes; a Cost Effective Low Carbon Heat Source Jeremy Crooks, The Coal Authority 14.30 Well Recycling – making use of existing assets Gareth Digges La Touche, Golder Associates 14.45 What Geothermal means to investors Nick Lyth, Green Angel Syndicate 15.00 Achieving SDG7 – Application of UNFC-2009 to geothermal energy resources Gioia Falcone, Cranfield University 15.15 Questions & discussion 15.25 Tea & coffee break Session 3: Industry & Local Authority 15.45 Development of geothermal technology to address the climate change issue in the densely populated areas of the world Roy Baria, EGS Energy 16.00 Minewater and HSA geothermal business opportunities David Townsend, Town Rock Energy 16.15 Surface Exploration in the Fantale Geothermal Licence Area, Ethiopia Tom Elliott, Cluff Geothermal 16.30 De-risking geothermal energy in the Cheshire Basin Councillor David Brown, Cheshire East Council & Mike Smith, Engie 16.45 District Heating Network with a Deep Geothermal heat source (Hot Sedimentary Aquifer) in Stoke-on-Trent Andrew Briggs, City of Stoke-on-Trent 17.00 Questions & discussion Session 4: Research Highlights 17.10 Ruth Robinson, University of St Andrews 17.25 Using surface geochemistry to identify and map fluid and gas conduits in deep geothermal systems Helen Robinson, University of Glasgow October 2016 Page 2 5th London Geothermal Symposium 17.40 Britain’s Geothermal Revolution: The Search for Deep Karst Nadia Narayan, Durham University 17.55 Subsurface temperature perturbations beneath Tyneside: implications for urban heat supply and energy management Rob Westaway, University of Glasgow 18.10 Questions & discussion 18.20 Summary 18.30 – Wine reception 20.00 October 2016 Page 3 5th London Geothermal Symposium ABSTRACTS & BIOGRAPHIES (in programme order) Technical developments in geothermal systems in the Netherlands Floris Veeger Veegeo Energy Abstract 14 deep geothermal doublets for direct heat use have been realised in the Netherlands since 2007 and two are being drilled at this moment. Due to a public available GEO-database, good subsidy schemes and a thriving greenhouse sector, many more projects are in development. The used reservoirs are the Lower Cretaceous / Upper Jura Delft and Rijswijk Sandstones, the Trias Bunter Sands, the Permian Rotliegend Sandstone and the Carboniferous Limestones. The deepest geothermal well is 2900 meters and the highest production temperature is 95 degrees Celsius. All projects use the heat directly. Technically the approach of doublet design and realisation has changed. The four major learnings are: 1. Stable injectivity in sandstone reservoirs was a serious challenge in many projects. With a limit on injection pressures by the authorities, very fine filtering and scaling control are essential. 2. The co-production of dissolved gas and oil traces were first unexpected. With gas water ratio’s exceeding 1 Sm3 gas per m3 brine it is uneconomic to keep this gas dissolved. All new wells are now being drilled and completed according oil and gas standards. The gas contains high methane levels and is therefore used in a CHP or boiler for additional energy recovery. 3. Corrosion and scaling is inevitable in the thermodynamic system of a high saline geothermal loop. Each project is different in terms of geochemistry, but in general CO2 corrosion and carbonate scaling are the major challenges. Corrosion inhibitors are being used successfully and other methods are being tested at the moment. 4. The well test designs have been changed from initial gaslift to ESP lift with downhole pressure sensors in both wells in order to retrieve high quality data and proper analysis for the decision making processes. Current developments in the Netherlands include the focus on deeper reservoirs with higher temperatures. Composite casings are being developed to eliminate the corrosion issues and to drill with lighter rigs. Synergies with the oil and gas industries are being developed further in order to re-use E&P infrastructure and to decrease exploration risks. October 2016 Page 4 5th London Geothermal Symposium Biography Floris Veeger has been involved in geothermal projects since 2009 while doing his Master at Delft University of Technology. He graduated on the synergy opportunities between the geothermal and hydrocarbon industries and won a Geo Energy Master Award and this work was picked up by the industry. As a project engineer he has been responsible for well test execution and design, completions, injectivity blockage solving, monitoring programmes and corrosion and scaling management. As a project manager he is now responsible for the entire doublet related works including geological studies, well designs and project realisation and workovers. Floris is owner of Veegeo Energy, a geothermal project management and engineering company. October 2016 Page 5 5th London Geothermal Symposium NOTES October 2016 Page 6 5th London Geothermal Symposium Seeking a successful business model for low temperature geothermal in Denmark David Simmons GEOOP Abstract Denmark has a huge geothermal potential that remains largely unexploited. Investors remain shy due to the perception of high costs and risks principally associated with the drilling process. Investment decisions are currently based on the costs of expensive ‘prototype’ projects. By industrialising the process of drilling and production the economics of geothermal energy become favourable. However, the Danish industry remains structurally and technically immature. By creating a geothermal operating company (GEOOP) and opening a test facility we are beginning the process of addressing these issues. Biography After graduating from Imperial College in 1992 I spent my early career working on drilling sites as a geologist. Since then I have been working in geological operations planning and delivering wells in the oil and gas sector worldwide. I was asked to join GEOOP last year as subsurface manager to help develop a geothermal exploration strategy for Denmark and northern Europe. October 2016 Page 7 5th London Geothermal Symposium NOTES October 2016 Page 8 5th London Geothermal Symposium History of geothermal utilisation in India- Opportunities for future development Ritesh Arya International Sustainable Energy Organisation Abstract Geothermal development in India dates back to more than 7400BC when Saint Vashit teacher of Lord Rama discovered and used the hot waters in Vashist village in Manali Himachal Pradesh for bathing and washing clothes in his Institute. Old stone bathroom are still in existence. Similarly story of Lord Shiva and precious stones explored and utilized from hot springs of Mani Karan (precious stone for ears ) Village in Himachal Pradesh dates further back. It is interesting to note that the 1st utilization of Hot springs for cooking food was also done in Mani Karan in India in 16th century when Guru Nanak ji cooked 1st Geothermal food from the hot boiling waters of Manikaran. This geothermal food is still cooked and distributed FREE of cost to anyone visiting his place. Use of geothermal waters for medicinal healing by Alchis and Amchis (Tibetan doctors) is known since time immemorial. Inspite of these early discoveries today these hot spots have become religious centers and not much has been done to improve the infrastructural facilities or its use for any other purpose. Till date more than 320 Hot springs have been reported by GSI in India with total 10000MWe known geothermal potential in peninsular and Himalayan regions sufficient to solve the energy problem of over 1 Billion population of India.. Exploration and drilling was carried out to develop these Pilot sites in early 1980’s. Borax plant was set up in Puga and Cold storage plant and few bulbs were lit in Manikaran using energy generated from geothermal energy but source was subjected to landslide and that was the end of geothermal utilization for energy production in India. In early part of 21st century interest in geothermal energy was rejuvenated and in 2010 Indo Norway Iceland INDNOR (Agneyodgara –Lava Energy) project was initiated which was supported by Research Council of Norway. Trial borewells drilled at Chumathang (hot Waters) by MOD yielded 130C temperatures at less than
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