A method for quantitative analysis of organic matter in different occurrence states of shale oil reservoirs
A quantitative analysis and occurrence state technology, applied in the direction of removing certain components, weighing, and preparation of test samples, can solve problems such as the difficulty in determining the proportion of organic matter in the occurrence state of mature shale
Active Publication Date: 2021-06-22
CHENGDU UNIVERSITY OF TECHNOLOGY
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Problems solved by technology
[0006] In order to solve the above technical problems, the present invention provides a method for quantitative analysis of organic matter in different states of occurrence in shale oil reservoirs, and solves the problem that it is difficult to determine the proportion of organic matter in different states of occurrence in mature shale in the prior art
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[0070] The principles and features of the present application are described below in conjunction with the embodiments, which are only used to explain the present invention, and are not intended to limit the scope of the present application.
[0071] The existing shale gas organic matter analysis methods are roughly divided into three types, one is reflected light fluorescence microscope and scanning electron microscope observation method; the other is solvent extraction method and thermal extraction method; the third is chemical oxidation method. Among them, although reflected light fluorescence microscopy and scanning electron microscopy can intuitively obtain organic matter in different states of occurrence, they cannot judge the relationship between organic matter and minerals; while solvent extraction and thermal extraction are currently the most common soluble organic matter Quantitative analysis method, but it cannot determine the content of free hydrocarbons in rocks, wh...
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The invention relates to a method for quantitative analysis of organic matter in different states of occurrence in shale oil reservoirs, and relates to the technical field of oil and gas development; prepare two groups of A and B or two shale oil reservoir samples with the same quality; group A or part A After shale oil reservoir samples are extracted shale oil, decomposed free solid bitumen, extracted solid bitumen in adsorbed state, pyrolyzed convertible kerogen, and soaked to extract non-convertible kerogen, the w 页岩油 、w 游离态固体沥青 、w 吸附态固体沥青 、w 可转化干酪根 、w 不可转化干酪根 ; Group B or part B rock oil reservoir samples were successively oxidized non-clay organic matter, extracted adsorbed solid bitumen, and soaked to extract clay kerogen, and the w 非粘土有机质 、w 粘土矿物吸附沥青 、w 干酪根吸附沥青 、w 粘土矿物间干酪根 . The invention discloses a method for quantitative analysis of organic matter in different states of occurrence in shale oil reservoirs, which solves the problem in the prior art that it is difficult to determine the proportion of organic matter in different states of occurrence in mature shale.
Description
[0001] The invention relates to the technical field of oil and gas development, in particular to a method for quantitative analysis of organic matter in different occurrence states of shale oil reservoirs. Background technique [0002] Organic matter is the material basis for the formation of shale oil and gas. As the depth of formation increases, the temperature and pressure continue to change, and the maturity of organic matter begins to change, and oil and gas begin to form. The organic matter of mature shale is divided into kerogen, shale oil, and solid bitumen, which can be subdivided into shale oil, clastic minerals, free solid bitumen between fractures, solid bitumen adsorbed by kerogen, solid bitumen adsorbed by clay minerals, and convertible Kerogen and non-transferable kerogen. With the increase of maturity, the proportion and microscopic size of organic matter in different occurrence states change, and the change rule has important guiding significance for the hydro...
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IPC IPC(8): G01N5/04G01N1/44
CPCG01N1/44G01N5/04
Inventor 陈文玲易婷周文李沁周秋媚邓虎成
Owner CHENGDU UNIVERSITY OF TECHNOLOGY