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Method of label sample recipe for nuclear magnetic resonant rock sample analyzer

A nuclear magnetic resonance and analyzer technology, applied in the direction of using nuclear magnetic resonance for analysis, etc., can solve problems such as inability to achieve accurate quantitative calibration

Inactive Publication Date: 2011-06-29
SHANGHAI GASOLINEEUM & CHEM EQUIP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Calibration of nuclear magnetic resonance instrument for analyzing physical properties, currently, anhydrous kerosene and distilled water are generally used, and accurate quantitative calibration cannot be achieved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] A method for formulating standard samples of nuclear magnetic resonance rock sample analyzer is:

[0033] Step 1: Dissolve 2 grams of copper sulfate in 500 grams of deionized water to form liquid X, control the concentration of copper sulfate to 0.4%, and use it after fully dissolved;

[0034] Step 2: Dissolve 2 grams of copper sulfate in 500 grams of heavy water to form Y liquid, control the concentration of copper sulfate to 0.4%, and use it after full dissolution;

[0035] Step 3: Using a digital titrator, take 0.015 ml of X liquid and 9.985 ml of Y liquid, keep the total volume constant at 10 ml, and control the volume ratio of X liquid to the sum of X liquid and Y liquid between 0.05%-50% , Mix well to become 1% standard sample;

[0036] Take 0.15 ml of X liquid and 9.85 ml of Y liquid to keep the total volume constant at 10 ml. The volume ratio of X liquid to the sum of X liquid and Y liquid is 1.5%. Mix thoroughly to form a 10% standard sample.

Embodiment 2

[0038] Step 1: Dissolve 3 grams of chromium acetylacetonate in 500 grams of isooctane to form liquid X, control the concentration of chromium acetylacetonate to 0.6%, and fully dissolve it for use;

[0039] Step 2: Dissolve 3 grams of chromium acetylacetonate in 500 grams of tetrabromomethane to form liquid Y, control the concentration of chromium acetylacetonate to 0.6%, and fully dissolve it for use;

[0040] Step 3: Using a digital titrator, take 0.015 ml of X liquid and 9.985 ml of Y liquid, keep the total volume constant at 10 ml, and control the volume ratio of X liquid to the sum of X liquid and Y liquid between 0.05%-50% , Mix well to become 3% standard sample;

[0041] Take 0.15 ml of X liquid and 9.85 ml of Y liquid to keep the total volume constant at 10 ml. The volume ratio of X liquid to the sum of X liquid and Y liquid is 1.5%. Mix thoroughly to form a 30% standard sample.

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PUM

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Abstract

Based on different gyromagnetic ratios, liquid state components are divided to A class and B class in order to form series of standard sample in different porosities. The method includes steps: solving relaxation agent C class to A class so as to constitute X fluid, and controlling concentration of C in 0.002%-2%; solving relaxation agent C class to B class so as to constitute Y fluid, and controlling concentration of C in 0.002%-2%; using digital titrator to distribute X fluid, and Y fluid to make total volume keep a constant value 0.1-20 milliliter, and control volume ratio between X fluid, and Y fluid being as 0.05% - 50% in order to form series of standard sample with porosities 1% - 36%. The invention provides accurate quantitative correction of porosity parameter for nuclear magnetic resonance apparatus.

Description

Technical field [0001] The invention relates to a method for preparing a nuclear magnetic resonance rock sample analyzer standard sample, in particular to a method for preparing a nuclear magnetic resonance rock sample porosity standard sample, and belongs to the technical field of nuclear magnetic resonance physical property analysis signal calibration. Background technique [0002] The petroleum industry needs to analyze the physical properties of rock samples and provide parameters such as porosity and permeability of the rock samples. [0003] The nuclear magnetic resonance instrument can measure the water content of the object, and the size of the nuclear magnetic resonance signal is proportional to the water content. After the rock sample is treated with saturated water, the internal pores are filled with water, and the NMR signal is corrected by the porosity standard sample to calculate the porosity parameters of the rock sample. [0004] Analytical properties of nuclear magn...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N24/08
Inventor 袁建新沈亚光
Owner SHANGHAI GASOLINEEUM & CHEM EQUIP
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