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Method of extracting all hydrocarbons from hydrocarbon rock

A technology of hydrocarbon source rock and extraction tube, which is used in the preparation of liquid hydrocarbon mixtures, petroleum industry, etc., can solve the problems of large sample volume, high cost, harmfulness, etc., and achieves low sample volume, low cost, convenient and safe operation. Effect

Inactive Publication Date: 2004-05-26
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

At present, fat extractors are generally used at home and abroad to extract the hydrocarbon components of soluble organic matter in source rocks, and there are many problems. First, this method uses chloroform or a ratio of benzene and ethanol as the extraction solvent. The substance has serious damage to the human body and the environment. Chloroform also undergoes photosynthesis to become phosgene, which is also very harmful. Second, the sample size used in this method is quite large, generally not less than 100 grams. Because on-site sampling is very difficult, the cost is relatively high. high; thirdly, during the experimental process of extracting source rocks and after extracting to desolventize and concentrate the hydrocarbon components of organic matter, the C contained in them 1 ~C 12 Hydrocarbons can cause large man-made losses
According to the alkane chromatographic analysis data in domestic and foreign literature, generally most of them only have C 13 ~C 30 If such analysis data are used to compare oil sources, there will be certain errors

Method used

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  • Method of extracting all hydrocarbons from hydrocarbon rock
  • Method of extracting all hydrocarbons from hydrocarbon rock

Examples

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Embodiment 1

[0019] First, the surface of the source rock collected from the field was washed with distilled water, and then the surface layer was removed with a microtome to become a new face rock. The core sample was baked in an oven at 60°C for 2 hours to remove the surface moisture. , crushed to 30-60 mesh. Weigh 1 gram of the source rock sample crushed to 30-60 mesh, put it in the extraction tube, slowly push it into the wave tube in the heating zone, turn on the power to heat up, and turn on nitrogen at the same time, the heating rate can be controlled At 16°C per minute, the final temperature is 300°C, and the flow rate of the carrier gas can be controlled at 6 ml per minute. When the hydrocarbon components evaporated from the source rock samples are carried by the carrier gas into a low-temperature area collection pipe with a temperature of 12°C, they become liquid hydrocarbons, and the carrier gas is discharged through another pipe. If there are no particulate liquid beads at the...

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Abstract

The present invention relates to a method of extracting all hydrocarbon components in hydrocarbon rock. By means of heating, hydrocarbon components dispersed in rock is desorbed and become organic hydrocarbon gas, which is carried by inorganic carrier gas, such as nitrogen, hydrogen, helium, etc. into some collecting tubes in low temperature region and condensed into liquid hydrocarbon as all hydrocarbon sample. The sample is used for chromatographic analysis and other analysis. The said method is non-toxic and pollution-less, has no light hydrocarbon loss and thus can obtain true and complete all hydrocarbon components. The present invention may be used in petroleum exploration and other fields.

Description

technical field [0001] The invention relates to a method for obtaining all hydrocarbon components in source rocks by using source rocks as raw materials by heating, evaporating and carrying current, which belongs to a new method for extracting hydrocarbons in source rocks. Background technique [0002] The content of total hydrocarbon components in source rocks is one of the stable components generally contained in petroleum and sedimentary rocks, and its composition characteristics are closely related to the properties of the original organic matter of petroleum, and it obviously shows regular changes as the organic matter matures and evolves. Therefore, with the help of the existing high-resolution chromatographic analysis technology, its composition characteristics are studied, which is useful for clarifying the properties and maturity evolution characteristics of organic matter, identifying oil source rocks, and comparing oil sources in oil and gas exploration and develop...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10G1/04
Inventor 王海清
Owner SOUTHWEST PETROLEUM UNIV
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