Determination method and apparatus for noble gas isotope in crude oil

A rare gas and measurement method technology, applied in the oil and gas field, can solve the problems of incomplete vacuuming of the system, influence of test results, deviation of test results, etc., to avoid baking vacuuming time, increase instrument utilization, and reduce background. Effect

Active Publication Date: 2014-02-26
LANZHOU CENT FOR OIL & GAS RESOURCES INST OF GEOLOGY & GEOPHYSICS CAS
View PDF4 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The superposition of these ions on the target ion peak will cause a large deviation in the test results; and if the previous sample is tested and the system is not vacuumed thoroughly, the background effect will also affect the test results of the next sample

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
  • Determination method and apparatus for noble gas isotope in crude oil
  • Determination method and apparatus for noble gas isotope in crude oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0022] Embodiment of the present invention is described below in conjunction with accompanying drawing, embodiment does not constitute limitation of the present invention:

[0023] The invention provides an online crude oil degassing and pre-purification system. Thus, the pollution-free analysis of rare gases in crude oil is realized. This experimental method protects the ultra-high vacuum mass spectrometer and improves the accuracy of analysis and testing.

[0024] This experimental method is composed of a crude oil degassing system, a purification system and a rare gas isotope mass spectrometer. The piping and valves of each system can meet the ultra-high vacuum requirements, and can withstand high-temperature baking at 280 ° C. The vacuum degree of the crude oil degassing system can reach 10 -5 Pa, purification and mass spectrometer system vacuum up to 10 -9 Above Pa. Because crude oil degassing is easy to cause system pollution, the crude oil degassing system is indepen...

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 relates to the field of oil gas, especially to a determination method and a determination apparatus for noble gas isotope in crude oil. According to the invention, a crude oil sample is pre-purified, and the pre-purified sample mainly comprises a noble gas component and does not pollute an instrument, thereby avoiding baking and vacuum-pumping of a system after sample determination each time and substantially increasing the utilization rate of the instrument. The pre-purified sample almost does not contain any organic component, so a background is reduced, influence of organic fragment ions on measurement results is eliminated, and accuracy of test data is improved; organic ingredients in released gas of crude oil are effectively prevented from polluting a high vacuum noble gas isotope mass spectrometer, the superposition effect of organic fragment ion peaks on a target ion peak is reduced, so isotope detection precision is effectively improved. The technological difficulty that noble gas isotope in a crude oil sample is difficult to detect is overcome. Gas-oil-source ternary noble gas isotope data comparison is realized. Accurate and reliable noble gas isotope data are provided for oil gas tracing, oil source comparison and gas source comparison.

Description

technical field [0001] The invention relates to the field of oil and gas, in particular to a method and device for measuring rare gas isotopes in crude oil. Background technique [0002] Since more than 95% of the components in the crude oil degassing gas are organic gases, they are easily adsorbed on the inner wall of the mass spectrometer and the purification pipeline, and are difficult to remove by vacuuming, resulting in low vacuum in the system, obvious background effect in the test, and organic debris Ions have a serious impact on the experimental results, and even cause errors of several orders of magnitude in the isotope ratio. Moreover, organic gases cause serious pollution to rare gas mass spectrometers that require ultra-high vacuum. It takes half a month to bake and evacuate the sample system once, and what’s more, it will cause the mass spectrometer filament to burn out, or the electron multiplier receiver Reduced sensitivity, or even failure. Therefore, in th...

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
Patent Type & Authority Applications(China)
IPC IPC(8): G01N27/62G01N1/34
Inventor 曹春辉张生银李双林李立武李中平杜丽贺坚何大祥
Owner LANZHOU CENT FOR OIL & GAS RESOURCES INST OF GEOLOGY & GEOPHYSICS CAS
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap