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DMT Corescan – High technology in recording drilling logs

December 13, 2019

a área superior do CoreScan

DMT CoreScan is a versatile device designed to take high-resolution images of boreholes, complete or fragmented, and store them digitally in colour.

 

In full scanning, the cores rotate 360° around their axis, while a fixed camera parallel to the axis of rotation performs the scanning. The core is scanned at a rate of 20 sec/m and the image can be stored in BMP, JPG or TIF.

 

After recording the image, the system creates a digital library that facilitates data management of the analysed boreholes, as well as enabling petrographic analysis and qualitative and quantitative structural analysis of the borehole.

The CoreScan system consists of:

  • DMT CoreScan 3 (state-of-the-art scanner system);
  • DMT CoreScan UV (UV fluorescence imaging device);
  • DMT CoreBase 2 (analysis and database software).

 

The digital system for generating images and recording boreholes provides:

  • Registration of high-resolution testimonies;
  • Globally accessible database;
  • Precise image of the borehole core and its petrographic/structural analysis;
  • Quantitative fracture analyses;
  • Core orientation;
  • UV fluorescence imaging.

 

Watch the demonstration video below:

www.youtube.com/watch

 

DMT CoreScan's main applications are:

  • Exploration drilling in mineral deposits such as: metallic minerals, oil, gas, coal, and others;
  • Sedimentological investigations;
  • Structural investigations;
  • Scientific drilling projects;
  • Underground investigation for geotechnical studies, geothermal energy projects, final disposal of radioactive waste, etc;

 

DMT CoreScan 3: Generation of high-resolution images in 360º or on the witness box itself.

DMT CoreScan3 works in two ways: 360 mode generates high-resolution images of the entire circumference of the core samples. In flat scanning mode, an entire core box can be scanned, resulting in a detailed image of the cores. The images are recorded in true colour with a resolution of up to 10 pixels / mm (254 dpi) and details of up to 40 pixels / mm (1016 dpi).

 

Scanning system

- 360° mode: scanning the entire circumference of the borehole

- Flat mode: 2D analysis of single core or core boxes

 

Fast scanning system

- 360° mode: 20 seconds per metre;

- Flat mode: 30 seconds per box;

 

Image generation system:

-High resolution system (40 pix / mm)

 

Software DMT CoreBase

With the CoreScan DMT evaluation system, users can create a digital library with integrated and organised core data with advanced search functions.

Other important features of the system are the structural and petrographic analysis of drill cores, the generation of lithological columns, the definition of alteration zones and geotechnical parameters (RQD, FD, FS), and the rapid construction of borehole LOGs:

 

CoreBase (DrillCore Digital Library)

DMT CoreBase is a Data Management System that includes a digital library of analysed cores.

 

CoreImage Analysis (petrographic analysis)

With CoreImage Analysis it is possible to obtain important information such as:

  • Differentiation of mineral phases;
  • Mineral content (absolute and percentage);
  • Grain size distribution (particle size curve);
  • Grain sphericity (circularity, convexity, ellipticity, rectangularity);
  • Porosity (absolute and percentage);
  • Generation of lithological columns;
  • Definition of alteration zones.

 

CoreStruture Analysis

  • Software for quantitative structural analysis;
  • Geological structures are evaluated by capture routines (foliation, joints, faults, veins, folds, etc.);
  • The orientation of the borehole and its structures are displayed graphically, and in the case of deviated boreholes, the dip direction of the structures is corrected directly;
  • Geomechanical parameters: RQD, FD, FS.

 

Geotechnical Analysis

DMT's scanning system makes it possible to:

  • Scanning of cores at speeds of up to 300 metres per day;
  • Structural analysis of boreholes and stereographic projections;
  • Derivation of geomechanical parameters (RQD 10, 20, 30) and fracture characterisation;
  • Creation of a library of cores and logs with quick search functionalities;

 

More information can be found on the DMT-Group website. Or contact us.

 

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