Microcosmic remaining oil occurrence state visual quantitative analysis system based on rapid laser scanning confocal

Abstract

The invention discloses a microscopic remaining oil occurrence state visual quantitative analysis system based on rapid laser scanning confocal, and belongs to the technical field of oilfield development. Comprising a sample preparation fluorescence labeling unit, a rapid fluorescence three-dimensional imaging unit, a multi-view rapid splicing unit, an image processing quantitative analysis unit, a three-dimensional visual display unit and an interactive exploration analysis unit. According to the method, the problems that in the prior art, rapid, visual and quantitative analysis on the occurrence state of the microscopic remaining oil is often difficult to realize, and particularly, obvious defects exist in the aspects of three-dimensional visualization and automatic quantification of a large-scale reservoir sample are solved; fluorescence signals are captured through the rapid fluorescence three-dimensional visualization system, the distribution and occurrence states of the microscopic remaining oil in the reservoir are visually displayed, automatic quantitative analysis of the distribution and occurrence states of the microscopic remaining oil is achieved, and the analysis efficiency and accuracy are improved.

Claims

1. A visual quantitative analysis system for the microscopic remaining oil occurrence state based on rapid laser scanning confocal, characterized by: include: A sample preparation fluorescent labeling unit is used to prepare the reservoir sample in a morphological form suitable for rapid fluorescent three-dimensional imaging, and to fluorescently label the microscopic residual oil in the reservoir sample with a fluorescent dye; A fast fluorescent three-dimensional imaging unit is used to perform laser scanning confocal processing on the fluorescently labeled reservoir samples, capture the fluorescent signals of the reservoir samples, collect the fluorescent signals under different viewing areas after focusing, and determine the fluorescent image data of the reservoir samples under different viewing areas; A multi-view fast stitching unit is used to quickly stitch the fluorescence image data of reservoir samples in different views, determine the multi-view fluorescence stitching image data, train the model based on the multi-view fluorescence stitching image data, and automatically construct a microscopic three-dimensional model of remaining oil; An image processing and quantitative analysis unit is used to process the fluorescent image data, identify and quantify the processed fluorescent image data, automatically identify and quantify the distribution and occurrence state of microscopic residual oil, and determine the quantitative analysis result of the occurrence state of microscopic residual oil; A three-dimensional visualization display unit is used to perform statistical analysis on the quantitative analysis results of the microscopic remaining oil occurrence state, create a visualized three-dimensional model based on the microscopic remaining oil occurrence state, and perform three-dimensional display of the quantitative analysis results of the microscopic remaining oil occurrence state based on the visualized three-dimensional model; The interactive exploration analysis unit is used to interactively explore the three-dimensionally displayed microscopic remaining oil occurrence state, determine the interactive exploration questions based on the microscopic remaining oil occurrence state, and automatically present the interactive exploration answers based on the microscopic remaining oil occurrence state.

2. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 1 is characterized in that: The sample preparation fluorescent labeling unit comprises: A sample preparation unit, used for preparing the reservoir sample for morphological preparation suitable for rapid fluorescence three-dimensional imaging; Based on the needs of visual quantitative analysis of the microscopic remaining oil occurrence state, the reservoir samples are prepared for rapid fluorescence 3D imaging, and the reservoir sample morphology suitable for rapid fluorescence 3D imaging is determined; a fluorescent labeling unit for fluorescently labeling microscopic residual oil in the prepared reservoir sample; A reservoir sample suitable for rapid fluorescent three-dimensional imaging is obtained after morphological preparation, and a fluorescent dye is used to fluorescently label the microscopic remaining oil in the reservoir sample.

3. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 2 is characterized in that: The fast fluorescent three-dimensional imaging unit comprises: A laser scanning confocal unit, used for performing laser scanning confocal processing on the reservoir sample after fluorescence labeling; The fluorescently labeled reservoir samples are precisely positioned under a laser scanning confocal microscope, and laser is used as a scanning light source to quickly scan and image point by point, line by line, and surface by surface to capture the fluorescence signals of the reservoir samples. An image acquisition unit, used for acquiring fluorescence image data of reservoir samples in different viewing areas; The captured fluorescence signals of the reservoir samples are collected to determine the fluorescence image data, and after focusing, the fluorescence signals under different viewing areas are collected to determine the fluorescence image data of the reservoir samples under different viewing areas.

4. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 3 is characterized in that: The image acquisition unit includes: The target focal length extraction module is used to extract the theoretical target focal length corresponding to the target field of view; A first distance data extraction module, used to extract the distance between the current lens and the reservoir sample, and use the distance between the current lens and the reservoir sample as the first distance data; A second distance data extraction module, used to extract the distance between the current imaging plane and the lens, and use the distance between the current imaging plane and the lens as second distance data; The first distance adjustment compensation coefficient acquisition module is used to acquire the first distance adjustment compensation coefficient by using the first distance data and the second distance data; wherein the first distance adjustment compensation coefficient is acquired by the following formula: Among them, ξ 01 Indicates the first distance adjustment compensation coefficient; E f Indicates the maximum adjustment error allowed in focal length adjustment; D 01 Indicates the distance between the current lens and the reservoir sample; D 02 Indicates the distance between the current imaging plane and the lens; f m Indicates the theoretical target focal length corresponding to the target field of view; The actual focal length range acquisition module is used to acquire the actual focal length range by using the first distance adjustment compensation coefficient and the corresponding theoretical target focal length under the target field of view.

5. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 4 is characterized in that: The actual focal length range acquisition module includes: A first distance adjustment compensation coefficient extraction module, used to extract the first distance adjustment compensation coefficient; A focal length information extraction module is used to extract the theoretical target focal length corresponding to the target field of view and the actual focal length adjustment error information contained in the historical adjustment record of the device; The second distance adjustment compensation coefficient extraction module is used to obtain the second distance compensation coefficient by using the actual focal length adjustment error information contained in the historical adjustment record of the device; wherein the second distance adjustment compensation coefficient is obtained by the following formula: Among them, ξ 02 Indicates the second distance adjustment compensation coefficient; E f Indicates the maximum adjustment error allowed in focal length adjustment; n indicates the number of focus adjustments contained in the historical adjustment record of the device; E si represents the actual adjustment error corresponding to the i-th adjustment of the focal length; f mi represents the theoretical target focal length corresponding to the i-th focal length adjustment; fsi represents the actual focal length corresponding to the i-th focal length adjustment; The upper and lower limit value acquisition module is used to obtain the upper and lower limit focal length values ​​corresponding to the theoretical target focal length by using the theoretical target focal length corresponding to the target field of view and the actual focal length adjustment error information contained in the historical adjustment record of the device in combination with the first distance adjustment compensation coefficient, wherein the upper and lower limit focal length values ​​are obtained by the following formula: Among them, f up and f down Respectively represent the upper and lower limit focal length values ​​corresponding to the theoretical target focal length; ξ 01 represents the first distance adjustment compensation coefficient; ξ 02 Indicates the second distance adjustment compensation coefficient.

6. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 3 is characterized in that: The multi-view fast splicing unit comprises: An image stitching unit, used for quickly stitching the fluorescent image data of the collected reservoir samples in different viewing areas; Acquire the fluorescence image data of the reservoir sample in different fields of view, and conduct in-depth mining and correlation analysis on the fluorescence image data of the reservoir sample in different fields of view, automatically realize the accurate splicing of the fluorescence image data in different fields of view, and determine the multi-field of view fluorescence splicing image data; A three-dimensional construction unit, used for constructing a three-dimensional model based on multi-view fluorescence stitching image data; Acquire multi-view fluorescence stitching image data, select a suitable model type, train the selected model based on the multi-view fluorescence stitching image data, and automatically construct a microscopic three-dimensional model of residual oil.

7. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 6 is characterized in that: The image processing quantitative analysis unit comprises: A data processing unit, used for processing the fluorescence image data; Acquire fluorescence image data, and search the fluorescence image data based on a sequential search method; Filter out missing data in the fluorescence image data that are of no value for the visualization and quantitative analysis of the microscopic remaining oil occurrence state, and determine the fluorescence image data that are valuable for the visualization and quantitative analysis of the microscopic remaining oil occurrence state; An identification and quantification unit, used for identifying and quantifying the processed fluorescence image data; Obtaining fluorescent image data that is valuable for visual and quantitative analysis of the microscopic remaining oil occurrence state; Input the fluorescence image data, which is valuable for the visualization and quantitative analysis of the occurrence state of microscopic residual oil, into the constructed three-dimensional model of microscopic residual oil, and use the three-dimensional model of microscopic residual oil to identify and quantify the fluorescence image data, so as to automatically identify and quantify the distribution and occurrence state of microscopic residual oil; Quantitative analysis unit, used to analyze the distribution and occurrence state of quantitative microscopic residual oil; The quantitative distribution and occurrence state of the microscopic residual oil are obtained, and the quantitative analysis of the distribution and occurrence state of the quantified microscopic residual oil is performed to determine the quantitative analysis result of the occurrence state of the microscopic residual oil.

8. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 7 is characterized in that: The occurrence states of the microscopic residual oil include bound state, semi-bound state and free state, wherein: The bound state is the microscopic residual oil adsorbed on the mineral surface, including the pore surface film state, particle adsorption state, and slit state; The semi-bound state is the microscopic residual oil in the outer layer of the bound state or far away from the mineral surface, including corner-shaped, throat-shaped, and particle-adsorbed states; The free state is the microscopic residual oil far away from the mineral surface, including clustered and inter-particle adsorbed states.

9. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 8 is characterized in that: The three-dimensional visualization display unit comprises: Statistical analysis unit, used for statistical analysis of the quantitative analysis results of the microscopic remaining oil occurrence state; Obtaining quantitative analysis results of the microscopic remaining oil occurrence state, and performing statistical analysis on the quantitative analysis results of the microscopic remaining oil occurrence state, and creating a visual three-dimensional model based on the microscopic remaining oil occurrence state based on the statistical analysis results; Three-dimensional display unit, used for three-dimensional display of quantitative analysis results of microscopic remaining oil occurrence state; A visualized three-dimensional model based on the microscopic remaining oil occurrence state is created, and a three-dimensional display of the quantitative analysis results of the microscopic remaining oil occurrence state is performed based on the visualized three-dimensional model.

10. The microscopic residual oil occurrence state visualization quantitative analysis system based on rapid laser scanning confocal according to claim 9, characterized in that: The interactive exploration and analysis unit comprises: Interactive exploration unit, used to interactively explore the microscopic remaining oil occurrence state displayed in three dimensions; Users can interactively explore the three-dimensional microscopic remaining oil occurrence state based on their own needs and determine interactive exploration questions based on the microscopic remaining oil occurrence state; An analysis and presentation unit, used for analyzing interactive exploration questions based on the microscopic remaining oil occurrence state, and presenting interactive exploration answers based on the microscopic remaining oil occurrence state; Get interactive exploration questions based on microscopic remaining oil occurrence; The interactive exploration questions based on the microscopic remaining oil occurrence state are analyzed, and the interactive exploration answers based on the microscopic remaining oil occurrence state are automatically presented.

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