Microscopic residual oil quantitative analysis method based on fluorescent sheet
A quantitative analysis and remaining oil technology, applied in image analysis, image data processing, instruments, etc., can solve problems such as insufficient quantification, influence of analysis results, limited precision, etc., to achieve quantification, accurate analysis results, and error resolution Effect
Active Publication Date: 2020-12-29
CHINA UNIV OF PETROLEUM (EAST CHINA)
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[0004] But at present, the analysis of fluorescent slices is mostly manual identification, and the analysis results are seriously affected by the identification personnel, with strong subjectivity, and there are many fluorescent pictures, and the analysis and identification work one by one Huge amount, limited precision, insufficient quantification
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[0053] This embodiment takes the fluorescent sheet in the high and shallow north area of Jidong Oilfield as an example.
[0054] A method for quantitative analysis of microscopic remaining oil based on fluorescent thin slices, specifically comprising the following steps:
[0055] (1) It is completed under an optical microscope equipped with mercury lamp components. The specific operation is: manually identify each fluorescent sheet, and divide the fluorescent color into 6 categories according to the characteristics of the fluorescent color: category 1 dark green-dark green , category 2 light green-green-yellow-green, category 3 green-yellow-yellow-bright yellow, category 4 yellow-orange-orange-orange, category 5 brown-red-brown-maroon, category 6 black, and correspond to particles, Pore, oily asphalt, colloidal asphalt, asphaltene asphalt, and carbonaceous asphalt are composed of six components, and for each fluorescent sheet, starting from the upper right corner, an "S"-sha...
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The invention relates to the field of fluorescent sheet quantitative analysis and microscopic remaining oil research, in particular to a fluorescent sheet-based microscopic remaining oil quantitativeanalysis method. The method comprises the following steps: (1) carrying out fluorescent sheet identification and multi-view-field picture acquisition; (2) carrying out brightness calibration on the fluorescent picture acquired in the step (1); (3) carrying out multi-view-field splicing on the fluorescent picture subjected to brightness calibration in the step (2); (4) establishing a characteristicfluorescent color plate according to the color categories identified and divided by the fluorescent sheet in the step (1); (5) segmenting the spliced fluorescent picture in the step (3) based on thecolor plate established in the step (4); and (6) calculating, counting and analyzing each parameter of the microcosmic residual oil based on the segmentation result in the step (5). The invention canprovide a batch, automatic and quantitative microscopic residual oil analysis method based on the fluorescent sheet, so as to improve the working efficiency and the accuracy of an analysis result.
Description
technical field [0001] The invention relates to the field of quantitative analysis of fluorescent thin slices and research on microscopic remaining oil, and specifically relates to a method for quantitative analysis of microscopic remaining oil based on fluorescent thin slices. Background technique [0002] Remaining oil is the underground crude oil that cannot be recovered after a certain oil reservoir has been exploited in a certain way and development stage. At present, China's major oil fields have entered the middle and late stage of development, especially the water content of medium and high permeability reservoirs has exceeded 90%. However, there are still a large amount of crude oil that has not been recovered underground, and there is an urgent need for research on remaining oil. The distribution characteristics of macroscopic remaining oil are the overall performance of microscopic remaining oil distribution. Carrying out research on remaining oil at microscopic ...
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IPC IPC(8): G06T7/00G06T7/10G06T7/90G06T3/40
CPCG06T7/0004G06T7/10G06T7/90G06T3/4038G06T2207/10064G06T2207/10061
Inventor 张依旻林承焰任丽华郑蓉基
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)