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Core NMR Accuracy Is High
May 18, 2017

There are three series of core NMR, namely, 2MHz, 5MHz, 12MHz nuclear magnetic resonance core analyzer, the series of nuclear magnetic products for different characteristics of the rock sample testing needs and carefully developed for the field of oil core testing to provide the most professional match Analysis solution. After five years of unremitting efforts, MicroMR 3 products (2MHz, 5MHz, 12MHz) can also be optional diffusion function upgrade to multi-dimensional nuclear magnetic resonance core analyzer, Rock Core NMR & MRI to the practical application has brought great convenience. MicroMR series of small and compact structure, is the world's advanced level of desktop nuclear magnetic resonance core analyzer; MicroMR series of nuclear magnetic resonance core analyzer, to meet the field of oil exploration porosity, permeability, saturation, fluid saturation , The correlation of fluid saturation and other related analysis and testing, measurement results objective and true, high precision, good repeatability, instrument performance and stability, cost-effective.

The scientific and accurate selection of nuclear magnetic resonance of rock core directly affects the measurement results of parameters such as saturation of magnetic fluid and magnetic fluid saturation of rock samples. Centrifugal method is widely used at home and abroad to determine the T2 cut-off value of the method, Rock Core NMR & MRI most domestic and foreign experts and scholars selected 100psi as the standard sandstone and carbonate core T2 cut off the best centrifugal force. The results show that the T2 cutoff value of the core of the sedimentary rock reservoir is less than 33ms, and the core T2 of the volcanic reservoir is not seen, and the core of the volcanic rocks is not more than 33ms. Cut-off reports.

Core magnetic resonance logging technology is widely used in carbonate reservoir pore structure, fluid properties and other aspects of discrimination. However, due to the heterogeneity of carbonate reservoirs, the multi - solution and complexity of conventional logging responses are combined. The use of nuclear magnetic resonance logging to comprehensively reflect reservoir pore structure and fluid properties can overcome the shortcomings of conventional logging. Based on a large number of core nuclear magnetic resonance experiments, the relationship between the transverse relaxation T2 spectrum, the relationship between T2 spectrum and pore throat structure, the influence of particle size, the influence of fracture hole, the change rule of T2 cutoff The relationship between porosity and permeability parameters of nuclear magnetic analysis and pore parameters of conventional analysis has been achieved. The experimental results show that the NMR spectrum of T2 reflects the pore structure of the rock, which reflects the pore size distribution, and has good effect in evaluating the Rock Core NMR & MRI pore structure and reservoir effectiveness of carbonate rocks. The effect of resonance measurement is very small and the lower limit of particle size is 2mm. The cuttings drilled by the grinding PDC bit or with the breaker are not suitable for the application of nuclear magnetic resonance technology. The T2 cutoff value of the carbonate formation is not The T2 distribution spectrum can not effectively reflect the parameters of fractured porosity, but the T2 spectrum can qualitatively identify the reservoirs of pore development.