Unlock instant, AI-driven research and patent intelligence for your innovation.

Quick pretreatment method for adamantane compounds in crude oil

An adamantane and compound technology, which is applied in the field of oil and gas geochemical analysis of petroleum samples, can solve the problems of polluted environment, chromatographic column damage, long cycle, etc., and achieves the effects of short pretreatment time, good reproducibility and controllable process.

Inactive Publication Date: 2014-04-02
CHINA UNIV OF GEOSCIENCES (WUHAN)
View PDF5 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When directly injecting samples, high-boiling components such as colloids and asphaltene in crude oil samples will directly damage the column efficiency and ion source, reduce the separation ability of the chromatographic column, and cause long-term damage to the chromatographic column, reducing the efficiency of the chromatographic column. Improve the sensitivity of mass spectrometry detection, increase the multiplier tube voltage
Although column chromatography can effectively separate crude oil components, this method requires more glassware, consumes a large amount of organic solvents, has a long cycle, pollutes the environment, and seriously endangers the health of experimenters
During the process, the solution needs to be rotatably evaporated in a water bath at 43-46°C until it is nearly dry (about 2mL); Light hydrocarbon components are easy to lose during the drying process, which has a great impact on the accurate quantitative analysis of adamantane, directly leads to errors in the analysis of adamantane compounds, and fails to accurately reflect crude oil information. The parameters obtained by using this pretreatment method need to be cautious use

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Quick pretreatment method for adamantane compounds in crude oil
  • Quick pretreatment method for adamantane compounds in crude oil
  • Quick pretreatment method for adamantane compounds in crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] This example provides an efficient and rapid pretreatment method for adamantane compounds in petroleum samples. Using this pretreatment method combined with comprehensive two-dimensional gas chromatography / time-of-flight mass spectrometry, the condensate oil samples (Oil-1, Light yellow liquid, turbid, low density, low viscosity, 3462-3534m) for quantitative analysis.

[0030] The steps of the pretreatment method adopted in the present embodiment are as follows:

[0031] (1), the instrument in the liquid phase microextraction device used in this method is preheated, and the preheating temperature is 20 ℃, and the preheating time is 15min;

[0032] (2) Insert glass wool into the lower end of the transparent sample tube, and use a micro-syringe to move 7 mg of crude oil sample onto the glass wool, put the sample tube into the heating tank, and plug a septum on the top of the heating tank. pad;

[0033] (3) Place the barrel of the microsyringe in the condenser, and use t...

Embodiment 2

[0046] This example provides an efficient and rapid pretreatment method for adamantane compounds in petroleum samples, combined with comprehensive two-dimensional gas chromatography / time-of-flight mass spectrometry for condensate oil and light oil samples in Myanmar (sample information is shown in Table 4) Perform quantitative analysis.

[0047] Table 4 Information of crude oil samples in Myanmar

[0048]

[0049]

[0050] The steps of the pretreatment method adopted in the present embodiment are as follows:

[0051] (1), the instrument in the liquid phase microextraction device used in this method is preheated, and the preheating temperature is 20 ℃, and the preheating time is 7min;

[0052] (2), insert glass wool at the lower end of the sample tube that is transparent up and down, and use a micro-syringe to move 4 mg of condensate crude oil sample onto the glass wool, pipette 10 mg of light oil crude oil sample onto the glass wool, and place the sample Put the tube i...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a quick pretreatment method for adamantane compounds in crude oil. The quick pretreatment method comprises the following steps: preheating an instrument; inserting glass wool into the lower end of a sample tube, and transferring crude oil sample to the glass wool; putting a cylinder of a micro syringe into a condenser, and puncturing a sample injection cushion at the top end of the sample tube through a needle of the micro syringe to expose the top end of the needle from the bottom surface of the sample injection cushion; introducing nitrogen into the bottom of the sample tube, regulating the flow speed of the nitrogen to be 1-4mL / min, and adding an extracting solvent into the cylinder of the micro syringe; setting the heating temperature of a heating tank to be 270-310 DEG C, and heating and extracting the sample tube; after extraction is finished, pulling out the micro syringe, and transferring an extracting solvent (A) into a chromatographic sample injection bottle. According to the quick pretreatment method provided by the invention, the defects in the prior art are overcome, the damage to the instrument caused by a test sample can be effectively avoided, and the adamantane compounds in the crude oil sample can be accurately and quantitatively analyzed.

Description

technical field [0001] The invention relates to a pretreatment method for adamantane compounds in crude oil samples, which is suitable for the pretreatment of condensate oil, light oil and normal crude oil in the field of oil and gas exploration, and belongs to the technical field of oil and gas geochemical analysis of petroleum samples. Background technique [0002] Oil and gas accumulation analysis and testing technology has developed rapidly at home and abroad in recent years. Determining the maturity of crude oil is of great significance for identifying oil sources and making reliable evaluation of oil and gas resources. A variety of biomarker compounds can be used to study the maturity of source rocks and crude oil, but for medium and high maturity source rocks (vitrinite reflectance Ro>0.9%-1.0%) and crude oil, the more effective biomarkers Compound indicators, such as C 29 Steranes 20S / (20S+20R), terpenes Ts / Tm, etc. failed because they reached the equilibrium poi...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N30/08
Inventor 朱书奎张万峰李东浩朴相范童婷代威何生
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)