CN-121977977-A - Device and method for detecting particle size distribution of particles in offshore oil-containing water body

CN121977977ACN 121977977 ACN121977977 ACN 121977977ACN-121977977-A

Abstract

The invention discloses a device and a method for detecting particle size distribution of particles in an offshore oil-containing water body, wherein the device comprises a light source, a microscopic imaging device, a control module and an image processing module, and the light source comprises a white light source and an ultraviolet light source; the control module is configured to control the white light source to emit light, the microscopic imaging device to obtain a microscopic image, the ultraviolet light source to emit light, the microscopic imaging device to obtain a fluorescent image, the image processing module receives the microscopic image and the fluorescent image, matches the microscopic image with the fluorescent image to obtain a corresponding relation of particles in the microscopic image and the fluorescent image, eliminates the particles in the fluorescent image from the particles in the microscopic image to obtain a real particle image, and obtains particle size information of the particles according to the real particle image. Because petroleum molecules can be excited to fluorescence under the irradiation of specific light intensity and other silt particles have no fluorescence reaction, the distribution state of the petroleum molecules is obtained through fluorescence and is taken as a background to be subtracted, and accurate particle size distribution information of the particles can be obtained.

Inventors

LI YAHUI
WU GUOJUN
YANG PENG
HANG DONGDONG
WANG DONGSHENG
Liang Xianmeng
YAN ZHAOCHAO

Assignees

崂山国家实验室

Dates

Publication Date: 20260505
Application Date: 20251126

Claims (10)

1. The device for detecting the particle size distribution of the particles in the offshore oil-containing water body comprises a light source, a microscopic imaging device and an image processing module, and is characterized in that the light source comprises a white light source and an ultraviolet light source; the detection device includes: The control module is configured to control the white light source to emit light, and the microscopic imaging device obtains a microscopic image; The image processing module receives the microscopic image and the fluorescent image, matches the microscopic image with the fluorescent image to obtain a corresponding relation of particles in the microscopic image and the fluorescent image, eliminates the particles in the fluorescent image from the particles in the microscopic image to obtain a real particle image, and obtains particle size information of the particles according to the real particle image.
2. The device for detecting the particle size distribution of the particles in the offshore oil-containing water body according to claim 1, wherein the microscopic imaging device comprises at least two groups of lenses with different multiples, the control module is configured to acquire microscopic images and fluorescent images through at least one group of lenses, the image processing module eliminates the particles in the fluorescent images from the particles in the microscopic images according to the corresponding relation of the particles in at least one group of microscopic images and fluorescent images to obtain real particle images, and particle size information of the particles is obtained according to the real particle images.
3. The offshore oil containing water body particle size distribution detection device of claim 2, wherein the detection device comprises a lens switching device, the lens switching device is a non-contact lens switching device, and the non-contact lens switching device comprises: a drive disk on which an inner disk group is provided; A lens converter on which an external disk set is provided, the lens being mounted on the lens converter; The driving disc rotates to drive the lens converter to rotate so as to drive the lens to rotate to realize lens switching.
4. A marine oil-containing water body particulate matter size distribution detection apparatus according to any one of claims 1 to 3, wherein the light source comprises a near infrared light source, the detection apparatus comprises a scattering light detector, the control apparatus is configured to control the near infrared light source to emit light, the scattering light detector performs particulate matter concentration measurement, determines whether the particulate matter concentration satisfies a test condition, and performs particulate matter size distribution detection when the test condition is satisfied.
5. The device for detecting particle size distribution of particles in an offshore oil-containing water body according to claim 1, wherein the detection device comprises a light-transmitting glass and a light filter, and the control module is configured to control the light-transmitting glass to correspond to the microscopic imaging device when the white light source emits light, and control the light filter to correspond to the microscopic imaging device when the ultraviolet light source emits light.
6. The device for detecting particle size distribution of particles in an offshore oil-containing water body according to any one of claims 1 to 5, wherein the detection device comprises an explosion-proof cavity surrounded by an explosion-proof housing and an explosion-proof end cover, the explosion-proof end cover is provided with a lens mounting concave part and a horn mouth which are concave inwards in the explosion-proof housing, a microscopic lens of the microscopic imaging device is mounted in the lens mounting concave part, the lens mounting concave part is provided with an optical explosion-proof window, the light source is positioned in the horn mouth, and other parts of the microscopic imaging device are mounted in the explosion-proof cavity.
7. The device for detecting particle size distribution of particles in an offshore oil-containing water body according to claim 6, wherein the detection device comprises a lens switching device, the lens switching device is a non-contact lens switching device, and the non-contact lens switching device comprises: the driving disc is provided with an inner magnetic disc group, is positioned in the explosion-proof cavity and is close to the lens mounting concave part; the lens converter is provided with an outer disk group, the lens is arranged on the lens converter, and the lens converter is positioned in the lens mounting concave part; The driving disc rotates to drive the lens converter to rotate so as to drive the lens to rotate to realize lens switching.
8. The method for detecting the particle size distribution of the particles in the offshore oil-containing water body according to any one of claims 1 to 7, wherein the method comprises the following steps: controlling a white light source to emit light to obtain a microscopic image; controlling an ultraviolet light source to emit light to obtain a fluorescent image; The method comprises the steps of matching a microscopic image with a fluorescent image to obtain a corresponding relation of particles in the microscopic image and the fluorescent image, removing the particles in the fluorescent image from the particles in the microscopic image to obtain a real particle image, and obtaining particle size information of the particles according to the real particle image.
9. The method for detecting the particle size distribution of particles in an offshore oil-containing water body according to claim 8, wherein the microscopic imaging device comprises at least two groups of lenses with different multiples, and the method comprises the following steps: And acquiring microscopic images and fluorescent images through at least one group of lenses, removing particles in the fluorescent images from the particles in the microscopic images according to the corresponding relation of the particles in the at least one group of microscopic images and the fluorescent images to obtain real particle images, and obtaining particle size information of the particles according to the real particle images.
10. A method for detecting particle size distribution of particles in an offshore oil-containing water body according to any one of claims 8-9, wherein the light source comprises a near infrared light source, the detection device comprises a scattered light detector, and the method comprises: And controlling the near infrared light source to emit light, measuring the concentration of the particles by the scattered light detector, judging whether the concentration of the particles meets the test condition, and detecting the particle size distribution of the particles when the concentration of the particles meets the test condition.

Description

Device and method for detecting particle size distribution of particles in offshore oil-containing water body Technical Field The invention belongs to the technical field of water quality monitoring, and particularly relates to a particle size distribution detection method for marine oily sewage or marine reinjection water. Background Reinjection of offshore oilfield production sewage is one of the safest and environment-friendly measures for industrial wastewater treatment, energy is supplemented to a reservoir, the reinjection water of different oil extraction areas has different harmful liquids caused by oil reservoirs, efficient development of the oilfield is affected, and particle size median detection has important significance for continuous stable production of the oilfield. The offshore oilfield water injection quality detection method is mainly based on the oil industry standard SY/T5329-2012 "clastic rock reservoir water injection quality index and analysis method", wherein the suspended solid content is one of the main water injection quality control indexes. At present, the offshore detection is usually carried out on land after offshore sampling, and two types of instruments for detecting the median particle diameter are adopted, namely a particle counter and a laser particle sizer. The quality of the injected water has larger instability, the particle diameter in the water sample can be agglomerated with the placement time, the change is larger, the index can be influenced by a plurality of other testing conditions in the actual detection, and on the other hand, the testing results of different instruments have larger difference. CN109425562 a-a laser particle size analyzer for on-line monitoring of oilfield reinjection water suspended solids particle size and application thereof. The laser particle size method is adopted for measurement, which is equivalent to the underwater application after simplifying a laser particle size analyzer in a laboratory, the optical path structural design is complex and greatly influenced by a distribution model, and the on-line monitoring of the on-site water body cannot be met because the high-concentration water body cannot be measured. The above information disclosed in this background section is only for enhancement of understanding of the background section of the application and therefore it may not form the prior art that is already known to those of ordinary skill in the art. Disclosure of Invention The invention provides a device and a method for detecting particle size distribution of particles in an offshore oil-containing water body, and aims to solve the technical problem that an existing laser particle size detection device is complex in light path structure. In order to achieve the above-mentioned invention/design purpose, the invention adopts the following technical scheme to realize: The device for detecting the particle size distribution of the particles in the offshore oil-containing water body comprises a light source, a microscopic imaging device and an image processing module, wherein the light source comprises a white light source and an ultraviolet light source; the detection device includes: The control module is configured to control the white light source to emit light, and the microscopic imaging device obtains a microscopic image; The image processing module receives the microscopic image and the fluorescent image, matches the microscopic image with the fluorescent image to obtain a corresponding relation of particles in the microscopic image and the fluorescent image, eliminates the particles in the fluorescent image from the particles in the microscopic image to obtain a real particle image, and obtains particle size information of the particles according to the real particle image. According to the detection device for particle size distribution of the marine oil-containing water body particles, the microscopic imaging device comprises at least two groups of lenses with different multiples, the control module is configured to acquire microscopic images and fluorescent images through at least one group of lenses, the image processing module eliminates the particles in the fluorescent images from the particles in the microscopic images according to the corresponding relation of the particles in at least one group of microscopic images and the fluorescent images to obtain real particle images, and particle size information of the particles is obtained according to the real particle images. The detection device for the particle size distribution of the marine oil-containing water body particles comprises a lens switching device, wherein the lens switching device is a non-contact lens switching device, and the non-contact lens switching device comprises: a drive disk on which an inner disk group is provided; A lens converter on which an external disk set is provided, the lens being mounted on the lens converter; The driving disc rota