Different works and important preparations for operational activities started in all work packages (WPs) at the same time and proceeded the project considerably in the first 18 months.The current overall status of DESTRESS can be summarised as “project on track” and summaried details of past activities are described for each WP below.
WP1: coordination of different activities (organisation of internal meetings, general assemblies, technical workshops), supervision and performance of the legal, financial and administrative issues (e.g. submission of the first DESTRESS´amendment in April 2017 and due deliverables).
WP2: As WP2 aims to put a special focus on the integration of risk factors, the identification and prioritization of risk factors played an important role. Together with first steps of model development, the results of these steps were published in deliverable 2.1. Based on a clear definition of frame conditions and the methodological approach, the model development was intensified. Thereby considerable improvement was made in terms of power plant technology. For the power provision a running component model is available that will be integrated into the overall techno-economic model.
WP3: In this WP a literature survey of risk identification related to operational stimulation was carried out and a seismic risk assessment using a specific workflow was started based on actual projects conducted in Europe. In addition, several acceptability studies were implemented in Europe in relation to specific geothermal projects. Moreover, a non-standard risk monitoring incl. slow deformation (GPS, InSar) and low cost real-time building monitoring around active geothermal plants were investigated. And, preparation of real-time monitoring capabilities for carrying out vulnerability studies as well as some field and remote surveys for identifying the best building started. Furthermore, the permission process with local population for approving the deployment and installation of sensors around the operational plants of Soultz and Rittershoffen was launched.
WP4: the progress in this WP was made, especially in terms of preparing the stimulation treatment for the site in Klaipeda, delivering the first part of the report on reservoir performance in terms of sustainability at the French site and planning the chemical injection tests at the Soultz-sous-Forêts.
WP5: the most important result from this WP is the first hydraulic soft stimulation treatment in Pohang, that happened on DESTRESS in August 2017 and had been in preparation since the start of the project. Other progress: Efficiency of the hydraulic treatment requires its proper placement. Applying injection at a specific location requires an efficient zonal isolation technique. Technique available on the shelf are being tested in task 5.1; Monitoring on the treatment downhole is the topic of task 5.2. The installation of a downhole monitoring system to collect data during the stimulation, and later during the operation of the well is extremely challenging in these wells. Cyclic treatment (stimulating using cyclic pressure patterns) is potentially a way of achieving similar hydraulic results while decreasing the risk of induced seismicity; Development of theoretical basis and models for that innovative technology and of the tools for reservoir creation modelling and analysis and to monitor and anticipate induced seismic events.
WP6: two milestones (MS15, MS16) referring to an overview on potential stimulation methods and generic monitoring designs for the demonstration sites selected for DESTRESS were submitted and a WP6-kick off meeting was organised in December 2016. Based on discussions with the participants contributing to the individual tasks, workplans for the different tasks have been prepared and updated. The first progress was presented by the task leaders at the 2nd General Assembly in Klaipeda.
WP7: timely reaching of milestones MS18, MS19, MS20, MS21 and MS22, submission of required deliverables D7.1 D7.2 D7.6 and implementation of numerous tasks e.g. set-up of an internal workspace; design, launch and updating of the project website www.destress-h2020.eu; drafting internal and external newsletters; implementation of site access programmes; Launch of best practice series.
