Core logger Geotek MSCL-S
MSCL-S (Standard Multi-Sensor Core Logger) allows you to analyse the core automatically with constant quality control of the obtained data. At the same time, it is possible to study a variety of rocks: sedimentary, igneous and metamorphic, represented as a whole core and its fragments with a diameter of 50 to 150 mm and a length of up to 1500 mm. Data from all sensors is collected simultaneously and displayed in real time, making the scanning process extremely fast and efficient. Up to 9 different datasets can be acquired simultaneously using one sample.
The modular design of the device allows the customer to retrofit it as new tasks or financial possibilities arise. Properties that can be determined using MSCL-S logger: P, S - wave velocity, gamma density, natural gamma activity, magnetic susceptibility (point, volume), chemical and mineralogical composition, as well as color spectrophotometry data and high-quality core imaging. Depending on the installed sensors and resolution, MSCL can document a core at speeds up to 12 m per hour, with a resolution of up to 0.1 mm (depending on the specific sensor and configuration of the system).
Any core collected for a science or engineering application can benefit from the high resolution, continuous, non-destructive core analysis offered by the MSCL. Measurements are used by scientists and engineers both intrinsically, for their actual values (e.g. gamma density, P-wave velocity), or as proxies for changes in lithology or depositional environment (e.g. magnetic susceptibility, XRF, or natural gamma). The multi-sensor arrangement of the MSCL uniquely allows users to confidently compare micro and macro scale changes in physical and chemical properties downcore. The obtained information will be useful to specialists from a wide variety of fields.
Oil and gas industry:
- Correlation and binding of core data to logging results;
- Quantitative and qualitative analysis of core heterogeneity;
- XRF analysis to obtain data on the elemental composition of the sample;
- Obtaining mineralogical maps and natural gamma-activity of rocks for further analysis of reservoirs;
- Clustering based on data from several sensors.
- Data on the density and elemental composition of samples for assessing reserves;
- Identification of target horizons and confirmation of geophysical data;
- Determination of lithological units and their physical properties.
- Obtaining geochemical and geophysical stratigraphic data with high (step <1 cm) resolution for paleoclimatological studies;
- Quick matching of rock density and P-wave velocity data to improve correlation between core and seismic data;
- Other analyzes available due to the ability to perform fast and detailed geophysical logging.
Work in the core storage:
- High-resolution optical scanning for material cataloging;
- Increasing the economic efficiency of work by obtaining additional data;
- Additional study of archived core and refinement of well data.
Engineering and Environmental Studies:
- Determination of mechanical properties of rocks based on acoustic data;
- Rapid assessment of core quality;
- Non-destructive quantitative analysis of rock properties important for engineers (density, water content, P-wave velocity);
- Detection of potentially harmful features of the geological structure of the area.
Geotek MSCL-S multisensor core scanner parameters:
- System dimensions (LxWxH, cm): 435 x 137 x 210 (depending on the configuration);
- System weight (kg): 1200 (depending on configuration);
- Sample parameters: length up to 155 cm, diameter 5-15 cm;
- Sensor movement: fully automated and software controlled (linear accuracy 0.02 mm);
- Data output: ASCII files containing all measured parameters associated with depth.
Parameters of sensors installed on the Geotek MSCL-S system:
- Core diameter: laser micrometers with a resolution of 0.02 mm;
- P-wave speed: 250-500 kHz piezo-electric ceramic transducers, spring-loaded against the sample (accurate to about 0.2%, depending on core condition);
- Gamma density: 137Cs gamma source in a lead shield with optional 2.5mm or 5mm collimators (density resolution of better than 1% depending upon count time);
- Magnetic susceptibility: loop sensor 60–150 mm in diameter (operating frequency 0.565 kHz, spatial resolution 20 mm) or point sensor (operating frequency 2 kHz);
- Resistivity: non-contact resistivity measurement using a unique dual-coil induction method;
- Photo documentation: full-color digital linear scanning system (resolution up to 10 microns, maximum scanning speed 200 lines / sec);
- Color spectrophotometry: Konica Minolta spectrophotometer, the measured reflectance is in the wavelength range of 360-740 nm;
- Natural gamma activity: 3 “x 3” NaI (Tl) detectors;
- X-ray fluorescence analysis: portable XRF Olympus Vanta (detectable elements Mg-U) or stationary, more powerful, XRF from Geotek (source 15 W / 50 kV, Rh anode, air cooling, silicon drift detector, detectable elements Na-U, resolution 0,1-10 mm);
- Mineralogical composition: hyperspectral camera (spectral range 400-2500 nm, resolution 0.5 x 0.5 mm, precise determination of the percentage, obtaining mineralogical maps) and NIR spectrometer (spectral range 780-2500 nm).
Each core section is pushed past the sensors, which scan the core as it passes. The active pushing element is connected to a ball screw, driven by a stepper motor which can position a core to an accuracy of better than 0.5mm. The computer controlling the stepper motor also controls the sensors, so that all the data are automatically correlated. The computer also measures the length of each core section and can automatically subtract the thickness of the end caps. This allows the sections to follow sequentially, producing an unbroken stream of data. Such a system not only saves time, but by ensuring that the core sections butt up against each other, the data are not corrupted by the air gaps which normally spoil measurements such as those for magnetic susceptibility. Continuous core logging means exactly what it says: a continuous, automated and uninterrupted process.
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- General product brochure Geotek MSCL-S
“Scientific and Analytical Center for Rational Subsoil Use named after V. I. Shpilman “
Multi-sensor core logger MSCL-SXZ (MSCL-S with Geotek XRF)