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Mud shale thermal release C5-C14 hydrocarbon preparation and online chromatographic analysis method

A chromatographic analysis, mud shale technology, applied in the direction of analysis of materials, material separation, measurement devices, etc., can solve the problems of inability to quantify, directly obtain the content of a single component, residual hydrocarbon components, etc.

Inactive Publication Date: 2015-07-01
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

The disadvantage of this method is that during the pyrolysis process, due to the large particle size of the sample (30 mesh to 60 mesh), the release of heavier components will not be complete; The content of all hydrocarbons will be inaccurate due to impurities, and the content of single components cannot be directly obtained
The disadvantage of this method is: the heat release temperature is only 200°C, n C 13 Its boiling point is 234°C, which will cause residues of heavier hydrocarbon components; it cannot be quantified, and can only be analyzed online for oil-rock comparison research

Method used

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  • Mud shale thermal release C5-C14 hydrocarbon preparation and online chromatographic analysis method
  • Mud shale thermal release C5-C14 hydrocarbon preparation and online chromatographic analysis method
  • Mud shale thermal release C5-C14 hydrocarbon preparation and online chromatographic analysis method

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Embodiment Construction

[0017] In order to make the above and other objects, features and advantages of the present invention more comprehensible, preferred embodiments are listed below and described in detail in conjunction with the accompanying drawings.

[0018] Such as figure 1 as shown, figure 1 It is pyrolytic release of C 5 ~C 14 Flowchart of the method for the preparation and on-line chromatographic analysis of hydrocarbons.

[0019] In step 101, the mud shale sample is ground into particles of 60-80 mesh, put into a quartz sample boat, an internal standard is added, and the quartz sample boat is placed in the middle of a different-diameter quartz tube in a tube furnace. The process goes to step 102.

[0020] In step 102, the online enrichment tube is immersed in the liquid nitrogen in the vacuum insulation cup, the collection tube is immersed in the liquid nitrogen in the vacuum insulation cup, the collection tube is connected to the tube furnace, the high-temperature six-way valve is co...

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Abstract

The present invention provides a mud shale thermal release C5-C14 hydrocarbon preparation and online chromatographic analysis method, which comprises that: 1, a mud shale sample is grinded into particles, and are in the quartz sample boat of a tubular furnace; 2, the tubular furnace is heated under helium gas purging, and hydrocarbon components of the sample are enriched in a liquid nitrogen cold trap; and 3, after completing the enriching, a chromatograph is started, the online enriching tube is rapidly heated, and the thermal release hydrocarbon enters the chromatographic column through a high temperature six-way valve along with carrier gas so as to separate. With the mud shale thermal release C5-C14 hydrocarbon preparation and online chromatographic analysis method of the present invention, the incomplete heavy-component thermal release caused by the large sample particles or the low thermal release temperature is avoided, the online chromatographic analysis and the sample preparation for other analysis items can be concurrently performed, the oil-rock comparative study can be performed, the mud shale can be subjected to quantitative evaluation, and advantages of convenience and environmental protection are provided.

Description

technical field [0001] The invention relates to the technical field of oil field development, in particular to a thermally released C 5 ~C 14 Hydrocarbon preparation and on-line chromatographic analysis methods. Background technique [0002] Shale oil is an important emerging energy source, C in shale 5 ~C 14 Light hydrocarbons are an important part of shale oil, and their content not only determines the resource potential of shale oil and gas, but also determines the mobility and production characteristics of shale oil and gas. In addition, C 5 ~C 14 A large amount of geochemical information is contained in light hydrocarbons, which can make up for the shortcomings of other geochemical analysis methods. [0003] Because the traditional extraction method can only get C in mud shale 15 For the above hydrocarbon compounds, it is relatively difficult to study the lighter components in shale. In 2004, Southwest Petroleum Institute invented a method for extracting all hydr...

Claims

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Application Information

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IPC IPC(8): G01N30/88
Inventor 王宇蓉李钜源王忠包友书张蕾吴连波翟正綦艳丽李祥臣王宝山
Owner CHINA PETROLEUM & CHEM CORP
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