The NMR Core Analysis Systems

The GeoSpec range of NMR Core Analysers is designed specifically for studies of core samples from oilfield reservoirs. GeoSpec is the industry standard with installations in almost every major oil producer and SCAL laboratory world-wide. Oxford Instruments’ (UK) partnership with Green Imaging Technologies guarantees complete hardware and software integration which makes it possible for any core analysis laboratory to obtain comprehensive NMR core analysis results without the need for an in-house NMR expert. GeoSpec models for routine measurements of relaxation distributions generally operate at 2 MHz in order to reduce artefacts caused by ferromagnetic material in the samples, and to mimic the operation of the NMR logging tools.

All GeoSpec2 models are equipped with Q-Sense, Oxford Instruments’ ground-breaking new technology for improved signal-to-noise and ultra-short echo times – both features essential for accurate measurements on tight rocks and shales. They are also fully integrated with specialist core analysis software from Green Imaging Technologies, which takes full control of the instrument hardware and automatically generates BVI, FFI, CBW, effective porosity, T1 and T2 cut-off values and NMR permeability. Other options are available to measure capillary pressure (Pc) using the patented GIT-CAP technique. This allows Pc measurements to be made in a fraction of the time taken by traditional techniques acquiring many more data points giving more accurate prediction of parameters such as pore throat distributions, wettability and relative permeability.