GeoSpec Brochure
NMR Spectrometers
QA/QC Analysers
Rock Core Analysers
Applications
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Part of the Oxford Instruments Group
GeoSpec is the industry standard NMR rock core analyser, with installations in almost every major oil producer and SCAL laboratory world-wide.
Three GeoSpec Benchtop NMR Rock Core Analyser models are available operating at 2, 12 and 23 MHz, handling samples from ½ to 2 inches diameter. With integrated Green Imaging Technology software and accessories to suit all users from routine rock core analysis to advanced petrophysics research.
The GeoSpec Core Analyser 2 MHz models are the industry standard for routine measurements of relaxation distributions, allowing the prediction of basic petrophysical parameters such as porosity, free and bound fluid determinations and T2 cutoff.
These instruments operate at 2 MHz to reduce artefacts caused by ferromagnetic material in the samples and to mimic the operation of the NMR logging tools. Higher field (12 and 23 MHz) GeoSpec models are available for situations where higher sensitivity is required, for example, very low porosity samples, and for special applications such as Magnetic Resonance Imaging (MRI).
The GeoSpec Benchtop NMR range of instruments is the result of a successful long-term collaboration between Oxford Instruments and Green Imaging Technologies (GIT), the world leaders in hardware and software for NMR core analysis.
Industry standard
Chosen by oil companies, service providers and academia worldwide.
Unique information
NMR core analysis provides information on fluid behaviour not available from other techniques.
Wide range of applications
From simple measurements of porosity to fluid typing, capillary pressure, gas isotherms and much more. Get more from your core!
Comprehensive applications software
Exclusive, user-oriented software from Green Imaging Technologies
Three models, to suit all needs
Software
Exclusive, user-oriented software from Green Imaging Technologies gives you NMR core analysis at all levels without the need for an NMR expert.
Q-Sense technology
For short echo times to see small pores and improve the accuracy of porosity measurements.
Overburden cells
Specially designed for use with the GeoSpec 2 and 12 MHz models, or measurements at as close to reservoir conditions as possible. Options available for 1 inch cores at 10,000 psi and 1.5 inch cores at 5,000 psi.
Range of probe sizes
From ½ inch to 2 inches diameter, to maximise efficient measurement of all core sizes.
Project database
Keeps track of all your samples and associated measurements, plus instrument performance and calibration data.
Pulsed field gradients options
Allows advanced measurements such as capillary pressure, saturation profiles and 2D data analysis for fluid typing
The GeoSpec Benchtop NMR Rock Core Analyser includes instruments from 2 MHz to 23 MHz operating frequency, handling samples from ½ to 2 inches diameter, with integrated software and accessories to suit all users from routine core analysis to advanced petrophysics research.
All GeoSpec Rock Core Analysers come complete with LithoMetrix software, which acts as the user interface and performs all instrument management and basic core analysis functions. LithoMetrix can be upgraded to Green Imaging Technology Systems to add more advanced measurements such as 2D maps, diffusion studies, capillary pressure and saturation profiles. Users of GeoSpec instruments equipped with 3D gradients can maximise the performance of the instrument using the GIT Systems 3D Imaging software.
Overburden Cells
NMR is a valuable tool for both routine core analysis and SCAL. Most measurements are made at ambient temperature and pressure, but it is becoming increasingly important to carry out measurements at as close to reservoir conditions as possible. The P5 and P10 cells, unique to the GeoSpec range of NMR rock core analysers and available for 2 and 12 MHz models, allow users to do this. Designed and built with a focus on usability and performance, the cells allow users to pressurize samples with up to 10,000 psi of confining pressure (for 1inch cores) or 5,000 psi (for 1.5inch cores), at up to 100ºC. These cells also allow core flooding experiments to be done, at pore pressures slightly below the maximum confining pressures.
| Model | Operating frequency | Maximum sample diameter | Gradients | Software |
| GeoSpec LT | 23 MHz | 29 mm | No gradients | Custom version of GIT Basic |
| GeoSpec 121D | 12 MHz | 53 mm | 1-D | LithoMetrix |
| GeoSpec 12/1D GIT ADV | 12 MHz | 53 mm | 1-D | GIT Advanced |
| GeoSpec 12/1D GIT IMG | 12 MHz | 53 mm | 3-D | GIT Advanced Imaging |
| GeoSpec 12 BASIC | 12 MHz | 53 mm | no gradients | LithoMetrix |
| GeoSpec 2 Adv | 2 MHz | 53 mm | 1-D | GIT Advanced |
| GeoSpec 2 BASIC | 2 MHz | 53 mm | no gradients | LithoMetrix |
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