Cryogenic Nanopore NMR Analyzer

NMRC12 series is a NMR-based nano-pore analyzer used to study the pore structure and distribution of porous materials. The determination of pore distribution can be measured and calculated by applying the relationship between the pore size and the freezing point of pore fluid. This NMR technique could be used to monitor the phase transition in pore fluid in real time and the detection range of pore size falls in 2 to 500 nm if appropriate fluid samples are chosen.
Application Indexes
Temperature range: – 30 0C~ 40 0C/ – 50 0C~ 40 0C (accuracy: ± 0.01 0C);
Cooling rate：10C / min;
Sample volume: 0.5 cm3 ~ 1 cm3;
Pore size: 2 nm ~ 500 nm.
Static fluid in pores improves the accuracy and resolution during the measuring course of cryogenic NMR method;
The modular gas supply system provides a stable and dry air flow as the media, which reduces signal minimum and can work for a long period of time;
Ultra-low temperature thermostat system at – 60 0C gurantees a stable cooling source which can cool down the air flow quickly and stablize it;
Two-stage heating resistors heat the sample chamber rapidly and control the temperature precisely;
NMR analyzer system with mature technology and full NMR capabilities: stable magnetic field, short dead time, and high SNR;
Probe designed for low temperature isolates the heat exchanges between sample chamber and the magnet effectively;
The powerful software with friendly user interface offers a fully automated solution including calculation, temperature setting, sampling, and data process plus figure exporting.

Rock Core NMR Analyzer

It is a well known fact that nuclear magnetic resonance (NMR) is commonly used in well logging measurements and for routine laboratory core analysis. However, many are not aware of the principle behind NMR and its advantages for the core analyst. It is commonly used to determine porosity and pore size distributions but it is important to note that NMR can also measure fluid mobility parameters such as bound volume irreducible (BVI), free fluid index (FFI), clay bound water (CBW) and effective porosity.
NMR can also easily and effectively measure permeability, capillary pressure, and oil/water and gas/water contents. These parameters are measured with high level of precision using comprehensive software, which is user-friendly and can be easily operated by a novice in NMR. The technical details given below are aimed at introducing NMR to the petrophysicist and core analyst who are not very familiar with NMR.
When a sample is placed in a magnetic field and activated with a quick pulse of radio frequency (RF), NMR signals are generated from liquids such as brine or oil. An NMR signal is formed instantaneously after the pulse, which then dies away with a characteristic decay rate or relaxation time known as T2. The signal amplitude immediately after the pulse indicates the total amount of fluid present. T2 of the signal provides important information about the physical environment of the liquids.
In pores filled with a single fluid, there are two key components to the NMR signal, one signal is generated from the fluid far from the pore walls and another close to the pore walls. The nature of NMR signals in fluids far from the pore walls is similar to those from bulk fluids having comparatively long relaxation times, whereas fluids close to the pore walls undergo a process of adsorption and desorption with the pore walls which has the effect of drastically reducing their NMR relaxation times.
In large pores, the dominant effect is from the bulk fluids, so larger pores have longer NMR relaxation times. In smaller pores, the surface-to-volume ratio is much higher, hence the fluids near the pore wall dominate the NMR signal, and smaller pores display overall shorter NMR relaxation times. This process is illustrated in the figures below.
Of course, practically it may not feasible to take NMR measurements from individual pores. The entire core must be measured at once, hence the resulting NMR signal is a composite of all the NMR signals from the different pore sizes in the core.
MicroMR 2MHz 5MHz Core NMR Analyzer Benchtop NMR System

Product Description

The MicroMR series: 2MHz, 5MHz NMR analyzer is well designed to test samples with different characteristics and provides you with the most professional and best match analytical solutions. After years of concentrated study, the two MicroMR products (2MHz, 5MHz ) now can be provided with optional upgrades to multi-dimensional NMR analyzer with diffusion functions. MicroMR series is the world’s advanced level benchtop NMR analyzer using a compact body design. It is an advanced level benchtop NMR analyzer that can be used in petroleum exploration researches. The MicroMR series has the following advantages: high accuracy, good repeatability, instrument performance, high cost-effective, objective and true measurement results.

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Basic Parameters:

1. Magnet: permanent magnet 0.055±0.01T(2MHz), 0.12±0.02T(5MHz)

2. Probe: Ø25.4mm

3. Size (L, W, H): 1685mm×520mm×386mm

4. Weight: 85Kg(Magnet box 25Kg, Spectrometer 25Kg, RF unit 35Kg )

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Functions:

• 1-inch diameter probe coil is specially designed for 1-inch diameter rock, also suitable for rock cuttings
• Low operation frequency; pulse mode
• All-digital spectrometer
• NMR scanning and analyzing software developed independently according to industry standards
• Customized pulse sequence package
• Exportable raw signal data facilitates data post-processing
• Convenient for export of raw data to Excel
• Automatic and manual calibration of operating frequency
• Automatic and manual calibration of pulse length (90 and 180 pulse)
• Professional ICC(Industrial Control Computer) ensures high stability and fast processing speed
• Compact structure and attractive appearance

Time Domain Analysis Numerical Simulation and Influence Factors of NMR Logging

Time Domain Analysis (TDA) of NMR analyzer logging data has been successfully used to identify and evaluate quantitatively the oil and gas layers. The successfulness of TDA method, however, can be affected by the complex pore structure of rock and the changing properties of reservoir fluids. This paper uses numerical simulation to study the performance of TDA method in the identification and quantitative evaluation of fluids from different kinds of reservoirs.

A number of factors are analyzed, including the type of fluids, different pore sizes, signal-to-noise ratios (SNR) and NMR logging acquisition parameters. The results show that TDA method can accurately identify light oil layer (viscosity < 5mPa.s). In oil-bearing water layer with small-pore movable water, TDA method can accurately determine the oil porosity of formation; in oil-bearing water layer with big-pore movable water, however, TDA method could over-estimate the actual oil porosity of formation.

In a macroporous water layer, a short waiting time of 1s is not sufficient for the water to fully recover in the measurement; consequently, the presence of strong water signal in the differential spectrum of TDA could produce a result that is the opposite of the test result.

In gas layer, TDA method can accurately determine the gas porosity of formation. However, in gas-bearing water layer with small-pore movable water,benchtop NMR results are usually inconsistent with test results. Differential spectra of TDA between gas layer bearing water with big-pore movable water and small-pore oil gas layer can have similar features, which is often difficult to differentiate.

It is suggested to combine the dual-echo-spacing logging data to distinguish the gas layer bearing water with big-pore movable water. When the SNR is lower than a certain threshold, the right hand of the differential spectrum signal diverges, which reduces the accuracy in the determination of the hydrocarbon porosity of formation.

It is also found that high hydrogen index of gas is useful to distinguish the gas layer. A well-designed pre-logging plan can ensure that all logging parameters are optimized, which will improve the results of TDA method for the identification of hydrocarbon fluids.

2016 Global NMR Analyzer Consumption Market Research Report

he Global NMR Analyzer Consumption 2016 Market Research Report is a professional and in-depth study on the current state of the NMR Analyzer market.

First, the report provides a basic overview of the NMR Analyzer industry including definitions, classifications, applications and industry chain structure. And development policies and plans are discussed as well as manufacturing processes and cost structures.

Secondly, the report states the global benchtop NMR Analyzer market size (volume and value), and the segment markets by regions, types, applications and companies are also discussed.

Third, the NMR Analyzer market analysis is provided for major regions including USA, Europe, China and Japan, and other regions can be added. For each region, market size and end users are analyzed as well as segment markets by types, applications and companies.

Then, the report focuses on global major leading industry players with information such as company profiles, product picture and specifications, sales, market share and contact information. What’s more, the NMR Analyzer industry development trends and marketing channels are analyzed.

Finally, the feasibility of new investment projects is assessed, and overall research conclusions are offered.

In a word, the report provides major statistics on the state of the industry and is a valuable source of guidance and direction for companies and individuals interested in the market.