Arbeitsbericht NAB 22-01

TBO Stadel-3-1: Data Report

To provide input for site selection and the safety case for deep geological repositories for radioactive waste, Nagra has drilled a series of deep boreholes in Northern Switzerland. The aim of the drilling campaign is to characterise the deep underground of the three remaining siting regions.

The Stadel-3-1 exploratory borehole is the sixth borehole drilled within the framework of this project. The drill site is located in the central part of the Nördlich Lägern siting region.

 

Dossier I:

In this report, first results from the Stadel-3-1 borehole are presented, in particular from the drilling operations and including the drill site construction.

 

Dossier II:

In this report, first results from the Stadel-3-1 borehole are presented, in particular the photo documentation of the cuttings and core samples as well as the resinated core slabs.

 

Dossier III:

In this report, first results from the Stadel-3-1 borehole are presented, in particular a detailed description of all encountered lithologies and lithostratigraphic units.

 

Dossier IV:

In this report, first results from the Stadel-3-1 borehole are presented, in particular the data from detailed microfacies analyses as well as ammonite-​ and palynostratigraphy, complementing the lithostratigraphic report (Dossier III).

 

Dossier V:

In this report, first results from the Stadel-3-1 borehole are presented, in particular from the detailed core goniometry and the characterisation of the tectonic structures observed in the drill cores.

 

Dossier VI:

In this report, first results from the Stadel-3-1 borehole are presented, in particular from the wireline measurements (wireline logging, micro-​hydraulic fracturing and pressure-​meter testing).

 

Dossier VII:

In this report, first results from the Stadel-3-1 borehole are presented, in particular from the hydrogeological investigations such as hydraulic packer testing.

 

Dossier VIII:

In this report, first results from the Stadel-3-1 borehole are presented, in particular the data from detailed laboratory analyses on core material for petrophysical and geochemical rock and porewater characterisation.

 

Dossier IX:

In this report, first results from the Stadel-3-1 borehole are presented, in particular from geomechanical laboratory testing on core material, such as triaxial and oedometric testing.

 

Dossier X:

In this report, first results from the Stadel-3-1 borehole are presented, in particular from the stochastic petrophysical log analysis combining selected wireline and Multi-​Sensor Core Logger as well as laboratory measurements.

 

Summary Plot:

In this report, the results from the Stadel-3-1 borehole are summarised in the form of a composite plot, including a short technical explanation of the information displayed.