DMT

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DMT

DMT Exploration & Geosurvey Division
Services for the development of geothermal projects
DMT GmbH & Co. KG – Essen, Germany
Member of TÜV NORD Group
November 2014 Exploration & Geosurvey | Slide 1
www.dmt.de
Vast experience in exploring deep geothermal
resources
Upper Rhine
Graben
Bavarian
Molasse
Munich
Speyer
Kaufbeuren
Strasbourg
50 km
www.dmt.de
Our location is close-by!
www.dmt.de
Gliederung
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What to consider when planning seismic surveys?
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Which phases occur during a seismic project?
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Impressions from a DMT acquisition crew?
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What is recorded by seismics?
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What are the benefits of seismics for a geothermal project?
www.dmt.de
Seismogram of one trace (raw data)
aus: Knödel, Krummel, Lange (1997)
www.dmt.de
Image of sedimentary channel after data
processing
0m
25 m
50 m
75 m
100 m
0m
200 m
400 m
600 m
800 m
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2500-4000 m
Seismic Exploration for deep geothermal
aquifers in the Upper Rhine Graben
www.dmt.de
2D- vs. 3D-Seismik: the principle difference
2D seismic
provides only partial information
3D seismic
presents the complete image
www.dmt.de
Exploration & Geosurvey
Services (Organized in Separate Departments)
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Exploration and engineering geophysics
Geology and borehole survey
Surveying and geomonitoring
Geoinstrumentation
Exploration seismics
Hydrogeology and water resources management
Surface gas emissions
www.dmt.de
Services for geothermal energy sector
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2D/3D Seismic Exploration
Seismic Data Processing
Geological Interpretation
3D-Modelling
3D-Simulation
Seismological Vibration Monitoring
Other Geophysical Methods
DMT- CoreScan
www.dmt.de
Seismic Exploration
Our services:
 Planning and acquisition of 2D/ 3D reflection seismic surveys
 Refraction seismic (standard, CMP, tomography)
 Hydroacoustic seismic
 Vertical Seismic Profiling (VSP)
 Highest quality and safety standards (OGP Guidelines), including work on
difficult terrain and large projects
 Quality control, data processing and analysis in field
www.dmt.de
2D vs. 3D Seismic
what is the difference?
2D Seismic (left pictures)
 The result is a 2-dimensional section
 Interpolation in between is necessary, fault correlation is uncertain
3D Seismic (right pictures)
 The result is a data volume
 No interpolation, very accurate and detailed structure interpretation possible
Your advantage:
 Imaging the underground gives dependability for next steps in project
www.dmt.de
Borehole Geophysics 1
The following tools are available:
 Density – measures the rock density based on the gamma-gamma method.
 Natural gamma ray – measures natural gamma rays for determining the clay
content and clay barriers; also used for progress checks and so on.
 Caliber –tool for determining the borehole diameter and borehole volume.
 Full-wave sonic – measures the seismic velocities vs and vp, as well as
determines Poisson‘s ratio, the modulus of elasticity and the sheer modulus.
 Cement bond log –determining the quality of cementing and the cement bond
 Dual induction – measures the specific resistivity of the rock at two
penetration depths, as well as clay barriers.
www.dmt.de
Borehole Geophysics 2
The following tools are available:
 Focussed resistivity – measures the specific resistivity of the rock.
 Televiewer – samples the borehole wall acoustically to detect joint systems
and fissures.
 Optical scanner – samples the borehole wall optically to detect joint systems
and fissures.
 Borehole direction finder –with high precision inclination and magnetic field.
 Flowmeter – measures the vertical flow of fluid, determines fluid inflows and
outflows.
 Sampler – takes samples at given depths; maximum sample of one litre
www.dmt.de
Seismic Data Processing
Our services:
 Processing of 2D/ 3D reflection seismic surveys
 Static Corrections from LVL measurements
 Prestack time and depth migration
 CRS Velocity analysis and Stacking
 Software: SeisSpace 5000, Promax
www.dmt.de
Geological Interpretation
Our services:
 Structural interpretation and analysis of seismic data
 Integration of environmental, geophysical and geologic information
 Interpretation and Correlation of logging results
 Computation of Synthetics Seismic sections
 More than 10 years experience in geothermal projects
 Team working (Geologists & Geophysicists), Software PETREL (4 Licences)
www.dmt.de
3D Modelling
Our services:
 Structural 3D-Modelling
 Velocity Modelling for Time-Depth Conversion
 Generation of 3D Block Model
 Fazies and Property Modelling
 Optimization of borehole planning and production
 Volumetric calculation and reservoir characterisation
www.dmt.de
Seismological Vibration Monitoring
Our services:
 Permanent monitoring (automatic measurement and data transfer)
 Planning, setup and maintenance of seismic monitoring grids
 Recommendation for vibration reduction and prevention
 Stimulation monitoring (Hydrofrac)
 Proof for satisfying the requirements laid down by mining acts
www.dmt.de
Géophysique G.P.R.
International Inc.
provided by DMT and Partners (GPR & AGL)
Airborne services:
 Gravimetry
 Electromagnetic
 Magnetometry
 Georadar
 Spectrometry
 TEM (Time Domaine EM)
 GPRTEM
 Airborne Inversion
www.dmt.de
Géophysique G.P.R.
International Inc.
provided by DMT and Partners (GPR & AGL)
Ground services:
 Gravimetry
 Resistivity & Imagery
 EM
 Borehole surveys and acoustic borehole scans
 GPR
 IP
 Magnetic
www.dmt.de
DMT - CoreScan
Our services:
 Lithological description
 Correlation with logging
 Structure analysis (fracture system, stratification)
 Determination of physical and geotechnical parameters
 Core sample documentation
www.dmt.de
Impressions from the Field (Cable)
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Impressions from the Field (Recorder)
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Impressions from the Field (Vibro)
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Impressions from the Field (Vibro)
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Impressions from the Field (LvL)
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Impressions from the Field (PPV/ Traffic)
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Certificates, QHSE Standards
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SCC Certificated
IAGC Standards
DIN 9001
Fair Company
Job & Family
Top Company for Engineers
www.dmt.de
Deep Gepthermal
Typical Projects (Germany)
Year
Client
Achievement
Amount
2011
GeoGlobal Energy Europe GmbH
Seismic Data Acquisition (3D), Processing, Interpretation
144 km²
2011
Gemeindewerke Holzkirchen GmbH
74 km²
2010
Enex Power Germany GnbH
47 km²
2010
Überlandwerk Groß-Gerau GmbH
85 km
2009
Stadtwerke Heidelberg
30 km
2009
HotRock GmbH
50 km
2008
Evonik New Energies GmbH
40 km²
2008
GEOenergie Bayern GmbH
52 km²
2008
Enex Power Germany GnbH
Seismic Data Processing (2D), Interpretation
35 km²
2008
Exorka International Ltd.
25 km²
2007
Stadtwerke München
80 km
2007
Exorka International Ltd.
160 km
2006
HotRock GmbH
20 km²
2005
First Geotherm GmbH
Seismic Data Acquisition (2D/ 3D), VSP, Processing, Interpretation
35 km²
2005
HotRock GmbH
Seismic Data Processing (2D), Interpretation
170 km
2005
GGA
Multi Offset Vertical Seismic Profiling
www.dmt.de
Thank you for your attention!
www.dmt.de
Seismic Profiling
Our services:
 Planning and acquisition of profiling surveys
 Vertical seismic profiling (VSP)
 Walkaway seismic profiling (WSP)
 Walkaround seismic profiling
 3D VSP
Your advantage:
 More information around your well, better velocity information
www.dmt.de

DMT

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