Saturday 22 February 2014
At the AGM last week we said goodbye to Shirley van Heck who decided to step down after serving three years as secretary. Thank you very much Shirley!
We welcomed Lida (secretary) and Mart (vice excursion secretary) as our new board members.
Thursday 16 January 2014
The first lecture of the new year was well attended an very well received. Thank you all for coming and a special thanks to the speaker Harry Doust. The slides are now online and can be foud in the archive section.
Friday 20 December 2013
We all enjoyed a great event at the Lindenhof to celebrate the PGK 35 year anniversary! The PGK board would like to wish you a good holiday season and hope to see many of you at our activities in the new year.
lecture · drinks
Wednesday 19 March 2014 17:00 - 19:00
Lecturer: David Bruhn (TU Delft)
David Bruhn will present an overview of current developments and the key results and recommendations developed in the EU project GEISER (2010-2013).
17:00 - 18:00 Social hour
18:00 - 19:00 Lecture
The project GEISER (Geothermal Engineering Integrating Mitigation of Induced Seismicity in Reservoirs) was funded by the European Commission from 2010 until 2013. The project addressed one of the major challenges the development of geothermal energy is facing: the mitigation of induced seismicity related to injection in geothermal operations to an acceptable level. For a better understanding of the actual processes inducing seismicity, two major aspects were investigated in detail:
(2) geomechanics and processes involved in creating induced seismicity were studied, in particular the influence of factors such as temperature, poro-elasticity, fluid injection rate, existing fault segments, and time dependent effects to better constrain the mechanisms involved during fluid injection. A variety of modelling approaches, as well as laboratory experiments were employed for this purpose.
To develop suitable mitigation measures two additional aspects were investigated:
(3) The consequences of induced seismicity were addressed by providing an assessment of the seismic hazard presented by earthquakes triggered through human activity in comparison to hazards triggered by natural seismicity. Results from (1) and (2) were used to quantify the probability of triggering larger earthquakes and to define the potential damage caused by ground shaking. This activity resulted in proposed guidelines for licensing and site development for local authorities and industry. One of the key elements in these guidelines is the setup of an advanced forewarning traffic light concept which combines mechanical models with classic probabilistic seismic hazard assessment methods;
(4) Strategies for the mitigation of induced seismicity were developed. On the basis of the recommendations formulated in (3) and of the results of (1) and (2), strategies for soft injection have been proposed. These include a scenario of cyclic injections compared continuously increasing injection pressures. The optimisation of a monitoring network and a real-time monitoring system were presented to help authorities and operators minimize the seismic hazard and manage the risks during operations and production.
Friday 11 April 2014
Organiser: Geert-Jan Vis & Mart Zijp
Lecturer: Kim Cohen (UU), Kay Koster (TNO), Sophie Visser (UU), Aafke Beumer (Natuurmonumenten), Charles Cornelisse (retired Shell)
This PGK Day Trip will be organized on Friday 11 April 2014. The aim of this trip is to get informed about the history of peat in the lowlands in the west of the Netherlands. Why is there so much peat? What does fresh peat look like? How was it produced and how did that affect the landscape as we know it today? How did the energy produced with peat affect the economy of the Netherlands?
The preliminary program for the PGK Day Trip:
8h30 Departure from Gouda train station
8h30-10h30 Bus drive Gouda-Reeuwijk-Bodegraven-Nieuwkoop including short stops
10h30-11h00 Coffee in Nieuwkoop (@ Natuurmonumenten)
11h00-12h30 Lectures on geology and landscape @ Natuurmonumenten
13h30-16h00 Boat trip Nieuwkoopse plassen
16h00-16h30 Lecture on economy of peat @ Natuurmonumenten
18h00-18h45 Bus drive to Gouda train station
We have reached the max number of registrations!
However, you can still fill in the form to get a place on our waiting list.
You will be contacted as soon as we receive a cancellation.
REGISTRATION THROUGH THIS FORM.
Thursday 8 May 2014 - Sunday 11 May 2014
A date for you diary: the Geo-Gastronomical field trip will take place around the dates mentioned above.
When: Thursday 8 May (late afternoon) – Sunday 11 May (evening)
Travel: touring car from Netherlands
Where: Boulonnais region, near the coastal town of Wimereux
Objective: dynamics of Cenozoic inversion of Upper Jurassic deposits in terms of structural geology, source rocks, syn-rift fluids, sedimentology and sequence stratigraphy. This will all be combined with the better side of regional French gastronomy.
Guide: Olivier Averbuch and colleagues (Université de Lille 1)
Price: to be announced
(registration opens soon).
Thursday 25 September 2014 - Sunday 28 September 2014
Guide: Harry Doust
Please note the dates for the September trip have been confirmed. More info on the programm and registration detials will be published here nearer the time.