Core holder for nuclear magnetic resonance

Abstract

The invention provides a special core holder for nuclear magnetic resonance, belonging to the field of petroleum energy engineering, which includes a cylinder body, a sample tube, a left plug, a right plug and a confining pressure mechanism, openings at both ends of the cylinder body, and a central part of the cylinder body The confining pressure chamber, the sample tube is set in the confining pressure chamber, the left cap is set on the left plug, the left cap fixes the left plug on the left end of the cylinder body, the right cap is set on the right plug, and the right cap fixes the right plug on the cylinder The right end of the body, the left and right plugs are against the left and right ends of the sample tube, and the middle parts of the left and right plugs are provided with displacement fluid channels. The confining pressure mechanism includes the confining pressure inlet and outlet and the confining pressure channel. Connect the confining pressure inlet and outlet with the confining pressure chamber. In the core holder provided by the present invention, the inlet and outlet of the confining pressure are arranged at both ends of the core holder dedicated for nuclear magnetic resonance. After such arrangement, the pressure of the fluid is stable when the confining pressure fluid enters the confining pressure chamber, which is beneficial to the experimental process. The impact is small, ensuring the accuracy of the experimental results, and at the same time enhancing the aesthetics of the entire core holder.

Description

technical field [0001] The invention relates to the field of petroleum energy engineering, in particular to a special core holder for nuclear magnetic resonance. Background technique [0002] In the field of petroleum and energy engineering, due to the non-destructive nature of nuclear magnetic resonance detection, the components of the material can be analyzed through the relaxation time map data without destroying the material structure; through the nuclear magnetic resonance imaging system, non-destructive and non-invasive imaging of the material can be carried out Analysis; the nuclear magnetic resonance system can also be used to conduct experiments on conventional parameters (such as permeability, porosity, saturation, etc.) of reservoir cores. Due to its non-destructive, fast, accurate and repeatable characteristics, and the ability to achieve functions that cannot be achieved by other conventional detection and analysis methods, nuclear magnetic resonance has become ...

AI Technical Summary

Problems solved by technology

In the existing core holder for nuclear magnetic resonance, the confining pressure fluid enters the confining pressure chamber from the middle part of the cylinder body of the special nuclear magnetic resonance core holder, which is neither beautiful nor convenient to install in the nuclear magnetic resonance chamber. Fluid input lines severely interfere with sample analysis results

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