CN114460008B - Wellhead foam detection device and method - Google Patents
Wellhead foam detection device and method Download PDFInfo
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- CN114460008B CN114460008B CN202210140850.6A CN202210140850A CN114460008B CN 114460008 B CN114460008 B CN 114460008B CN 202210140850 A CN202210140850 A CN 202210140850A CN 114460008 B CN114460008 B CN 114460008B
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- 239000006260 foam Substances 0.000 title claims abstract description 57
- 238000001514 detection method Methods 0.000 title claims abstract description 18
- 238000000034 method Methods 0.000 title claims abstract description 5
- 239000011521 glass Substances 0.000 claims abstract description 25
- 238000004519 manufacturing process Methods 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000001502 supplementing effect Effects 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 230000005540 biological transmission Effects 0.000 claims 1
- 239000002518 antifoaming agent Substances 0.000 abstract description 6
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- 239000004088 foaming agent Substances 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000013530 defoamer Substances 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/01—Arrangements or apparatus for facilitating the optical investigation
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/84—Systems specially adapted for particular applications
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Materials By The Use Of Optical Means Adapted For Particular Applications (AREA)
Abstract
The invention discloses a wellhead foam detection device and method, comprising the following steps: the device comprises a glass tube, a pipeline locking ring, an annular guide rail, a sliding module, a camera module and a light source module; the glass tube is welded with the on-site pipeline, the pipeline locking ring is fixed on the pipeline, the guide rail is fixedly connected with the pipeline locking ring, the sliding modules are in two groups, symmetrical mirror images of the two groups of sliding modules are respectively installed on the two guide rails, the camera module and the light source module are respectively installed on the two groups of sliding modules, the relative positions of the camera module and the light source module are fixed, the motor drives the sliding modules to rotate around the guide rail, the camera module shoots to obtain an image, the image is displayed through the display, and the foam content is calculated through the image processor. The invention has the advantages that: the state of the foam in the pipeline can be directly obtained, the real-time display of the foam content in the pipeline can be realized, the foam content is used for guiding the feeding of the defoaming agent with corresponding discharge capacity and proportion, the cost is reduced, and the economic benefit is improved.
Description
Technical Field
The invention relates to the technical field of foam detection of gas production wells, in particular to a device and a method for detecting foam of a well head in a foam drainage gas production process based on machine vision.
Background
The basic principle of foam drainage and gas production is that a certain surfactant (foaming agent) capable of foaming when meeting water is injected from a wellhead to the bottom of a well, and after bottom liquid is contacted with the foaming agent, a large amount of low-density water-containing foam is generated by stirring natural gas. With the generation of bubble interfaces, the liquid is continuously lifted, and the liquid at the bottom of the foam column is continuously supplemented until the water at the bottom of the well is replaced. The foaming agent can make the accumulated liquid of the shaft form foam through the functions of dispersion, drag reduction, washing and the like, and can make insoluble dirt such as silt, sludge and the like wrap the foam and discharge along with air flow, so that the effects of dredging the air water channel, increasing yield and stabilizing yield are achieved. In the foam drainage gas production process, a large amount of low-density water-containing foam coming out of a wellhead is required to be eliminated by adding a defoaming agent, so that the foam is prevented from entering the compressor, and the service life of the compressor is prolonged.
The existing foam detection method is that personnel are arranged to stay on site, sampling is carried out from the separator at regular intervals, and the feeding proportion or the discharge capacity of the defoaming agent is adjusted according to the sampling result. Because the foam coming out of the wellhead exists in the pipeline, the foam condition in the pipeline cannot be directly observed, the foam sampled from the separator is stored for a period of time, the real-time foam condition in the pipeline is not reflected, the adding proportion or the discharge capacity of the defoaming agent is changed according to the sampling result from the separator, the conventional filling system has larger consumption of the raw material of the defoaming agent, and the economic benefit cannot be improved for a long time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a wellhead foam detection device and a wellhead foam detection method. The foam content in the pipeline can be detected in real time, and the proportion or the discharge capacity of the defoaming agent can be accurately guided.
In order to achieve the above object, the present invention adopts the following technical scheme:
a wellhead foam detection device, comprising: a glass tube 8, a pipeline locking ring 1, an annular guide rail 2, a sliding module, a camera module 6, a light source module 9, a motor 10 and a computer;
the glass tube 8 is connected with a gas production pipeline through welding, the pipeline locking rings 1 are annular, the inner diameter of the pipeline locking rings is in interference fit with the outer diameter of the glass tube 8, the two pipeline locking rings 1 are sleeved at the two ends of the glass tube 8 respectively and fixed, the upper end point and the lower end point of the outer wall of the annular guide rail 2 are provided with bulges, the side surfaces of the bulges are provided with holes, the upper end point and the lower end point of the outer wall of the pipeline locking rings 1 are also provided with bulges, the corresponding positions of the side surfaces of the bulges are also provided with holes, the two annular guide rails 2 are symmetrically and mirror-image connected with the two pipeline locking rings 1 through bolts penetrating the holes, and the inner wall and the outer wall of the annular guide rail 2 are provided with sliding grooves which are circumferentially arranged along the ring;
the sliding modules are two groups, symmetrical mirror images of the two groups of sliding modules are respectively arranged on the two annular guide rails 2, the camera module 6 is fixedly arranged on one group of sliding modules, the light source module 9 is fixedly arranged on the other group of sliding modules, the camera module 6 and the light source module 9 are always aligned with the glass tube 8, and the mirror image positions of the camera module 6 and the light source module 9 are unchanged.
The sliding module is driven by the motor 10 to rotate around the chute for one circle; and then camera module 6 shoots the complete picture of round in the glass pipe 8, motor 10, camera module 6 and light source module 9 pass through computer control work, camera module 6 transmits the image of shooting to the computer, light source module 9 is used for supplementing the light in the glass pipe 8 and makes things convenient for camera module 6 to shoot, the image shows through the display 11 of computer, install image processor 12 in the computer, image processor 12 obtains the foam content in the pipeline through calculating the proportion of the area in the dark place and the bright place in the image.
Further, the sliding module includes: two circular arc connecting plates 5, four cylindrical joints 4, four hubs 3 and a connecting rod 7;
the upper end and the lower end of one side surface of one circular arc connecting plate 5 are respectively connected with a cylindrical joint 4, a hub 3 is arranged on one cylindrical joint 4, the two hubs 3 are symmetrically distributed and matched with sliding grooves on the inner wall and the outer wall of the annular guide rail 2 to realize circumferential sliding, and the other circular arc connecting plate 5 is also symmetrically and mirror-mounted on the annular guide rail 2; the two arc connecting plates 5 are connected through a connecting rod 7;
the camera module 6 is fixedly installed on the connecting rod 7 of one group of sliding modules, and the light source module 9 is fixedly installed on the connecting rod 7 of the other group of sliding modules.
The invention also discloses a wellhead foam detection method, which comprises the following steps:
the motor 10 drives the hub 3 to rotate clockwise around the chute for one circle to enable the camera module 6 to shoot the next complete image of the foam state in the pipeline, then the motor 10 drives the hub 3 to rotate anticlockwise around the chute for one circle to enable the coil to reset and avoid winding, the display 11 displays the shot image, so that the foam state in the pipeline is convenient to directly observe, if the foam exists in the pipeline, the displayed image can generate areas with different brightness, and the image processor 12 can obtain the foam content in the pipeline by calculating the proportion of areas of dark places and bright places in the image.
Let the circular area displayed by the display be S, and the sum of the open areas in the circular area be S 1 . Then:
S 2 ＝S-S 1
wherein: s is S 2 K is the foam content in the pipeline, which is the sum of dark areas.
Compared with the prior art, the invention has the advantages that:
1. the camera is used for carrying out surrounding shooting on the glass tube, so that the state of foam in the pipeline can be directly obtained.
2. By processing the photographed image, real-time display of the foam content in the pipeline can be achieved.
3. And the foam content is used for guiding the feeding of the defoamer with corresponding discharge capacity and proportion, so that the cost is reduced and the economic benefit is improved.
Drawings
FIG. 1 is a schematic cross-sectional view of a wellhead foam detection device according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a wellhead foam detection device according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an image displayed by a display according to an embodiment of the present invention;
in the figure: the device comprises a pipeline locking ring 1, a guide rail 2, a hub 3, a cylindrical connector 4, a circular arc connecting plate 5, a camera module 6, a connecting rod 7, a glass tube 8, a light source module 9, a motor 10, a display 11 and an image processor 12.
Detailed Description
The invention will be described in further detail below with reference to the accompanying drawings and by way of examples in order to make the objects, technical solutions and advantages of the invention more apparent.
In the description of the present invention, it should be understood that the directions or positional relationships indicated by the terms "circumferential", "radial", "clockwise", etc. are based on the directions or positional relationships shown in the drawings, only for convenience of description and simplification of the description, and are not indicative or implying that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as limiting the present invention.
In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.
As shown in fig. 1 and 2, a wellhead foam detection device includes: a glass tube 8, a pipe locking ring 1, a ring guide 2, a sliding module, a camera module 6 and a light source module 9,
the glass tube 8 is connected with a gas production pipeline through welding, the pipeline locking rings 1 are annular, the inner diameter of the pipeline locking rings is in interference fit with the outer diameter of the glass tube 8, the two pipeline locking rings 1 are sleeved at the two ends of the glass tube 8 respectively and fixed, the upper end point and the lower end point of the outer wall of the annular guide rail 2 are provided with bulges, the side surfaces of the bulges are provided with holes, the upper end point and the lower end point of the outer wall of the pipeline locking rings 1 are also provided with bulges, the corresponding positions of the side surfaces of the bulges are also provided with holes, the two annular guide rails 2 are symmetrically and mirror-image connected with the two pipeline locking rings 1 through bolts penetrating the holes, and the inner wall and the outer wall of the annular guide rail 2 are provided with sliding grooves which are circumferentially arranged along the ring;
the sliding module has two groups, and a group of sliding module includes: two circular arc connecting plates 5, four cylindrical joints 4, four hubs 3 and a connecting rod 7;
the upper end and the lower end of one side surface of one circular arc connecting plate 5 are respectively connected with a cylindrical joint 4, a hub 3 is arranged on one cylindrical joint 4, the two hubs 3 are symmetrically distributed and matched with sliding grooves on the inner wall and the outer wall of the annular guide rail 2 to realize circumferential sliding, and the other circular arc connecting plate 5 is also symmetrically and mirror-mounted on the annular guide rail 2; the two arc connecting plates 5 are connected through a connecting rod 7;
the two groups of sliding modules are symmetrically and mirror-image-mounted on the annular guide rail 2, the camera module 6 is fixedly mounted on the connecting rod 7 of one group of sliding modules, the light source module 9 is fixedly mounted on the connecting rod 7 of the other group of sliding modules, and the mirror positions of the camera module 6 and the light source module 9, which are aligned with the glass tube 8, are always unchanged.
The wheel hub 3 is driven by the motor 10 to rotate around the chute for one circle; and then camera module 6 shoots the complete picture of round in the glass pipe 8, motor 10, camera module 6 and light source module 9 pass through computer control work, camera module 6 transmits the image of shooting to the computer, light source module 9 is used for supplementing the light in the glass pipe 8 and makes things convenient for camera module 6 to shoot, the image shows through the display 11 of computer, install image processor 12 in the computer, image processor 12 obtains the foam content in the pipeline through calculating the proportion of the area in the dark place and the bright place in the image.
A wellhead foam detection method comprising the steps of:
the motor 10 drives the hub 3 to rotate clockwise around the chute for one circle to enable the camera module 6 to shoot the next complete image of the foam state in the pipeline, then the motor 10 drives the hub 3 to rotate anticlockwise around the chute for one circle to enable the coil to reset and avoid winding, the display 11 displays the shot image, so that the foam state in the pipeline is convenient to directly observe, if the foam exists in the pipeline, the displayed image can generate areas with different brightness (figure 3), and the image processor 12 can obtain the foam content in the pipeline by calculating the proportion of areas of dark places and bright places in the image.
Let the circular area displayed by the display be S, and the sum of the open areas in the circular area be S 1 . Then:
S 2 ＝S-S 1
wherein: s is S 2 K is the foam content in the pipeline, which is the sum of dark areas.
Those of ordinary skill in the art will appreciate that the embodiments described herein are intended to aid the reader in understanding the practice of the invention and that the scope of the invention is not limited to such specific statements and embodiments. Those of ordinary skill in the art can make various other specific modifications and combinations from the teachings of the present disclosure without departing from the spirit thereof, and such modifications and combinations remain within the scope of the present disclosure.
Claims (3)
1. A wellhead foam detection device, comprising: the glass tube (8), the pipeline locking ring (1), the annular guide rail (2), the sliding module, the camera module (6), the light source module (9), the motor (10) and the computer;
the glass tube (8) is connected with a gas production pipeline through welding, the pipeline locking rings (1) are annular, the inner diameter of each pipeline locking ring is in interference fit with the outer diameter of the glass tube (8), the two pipeline locking rings (1) are sleeved at the two ends of the glass tube (8) respectively and fixed, the upper end point and the lower end point of the outer wall of the annular guide rail (2) are provided with bulges, the side faces of the bulges are provided with holes, the upper end point and the lower end point of the outer wall of the pipeline locking ring (1) are also provided with bulges, the corresponding positions of the side faces of the bulges are also provided with holes, the two annular guide rails (2) are symmetrically mirrored and fixedly connected with the two pipeline locking rings (1) through bolts penetrating the holes, and sliding grooves which are arranged along the circumferential direction of the annular guide rail (2) are arranged on the inner wall and the outer wall;
the sliding modules are two groups, symmetrical mirror images of the two groups of sliding modules are respectively arranged on the two annular guide rails (2), a camera module (6) is fixedly arranged on one group of sliding modules, a light source module (9) is fixedly arranged on the other group of sliding modules, the camera module (6) and the light source module (9) are always aligned to the glass tube (8), and the mirror image positions of the camera module (6) and the light source module (9) are unchanged;
the sliding module is driven by the motor (10) to rotate around the chute for one circle; and then camera module (6) shoot glass intraductal round complete image in (8), motor (10), camera module (6) and light source module (9) pass through computer control work, camera module (6) are given the computer with the image transmission that shoots, light source module (9) are used for supplementing the light in glass pipe (8) and make things convenient for camera module (6) to shoot, the image shows through display (11) of computer, install image processor (12) in the computer, image processor (12) are through the proportion of the area of calculating in the image dark place and bright place, obtain the foam content in the pipeline.
2. A wellhead foam detection device according to claim 1, characterized in that: the sliding module includes: two circular arc connecting plates (5), four cylindrical joints (4), four hubs (3) and a connecting rod (7);
the upper end and the lower end of one side surface of one circular arc connecting plate (5) are respectively connected with a cylindrical joint (4), one cylindrical joint (4) is provided with a hub (3), the two hubs (3) are symmetrically distributed and matched with sliding grooves on the inner wall and the outer wall of the annular guide rail (2) to realize circumferential sliding, and the other circular arc connecting plate (5) is also symmetrically and mirror-mounted on the annular guide rail (2); the two arc connecting plates (5) are connected through a connecting rod (7);
the camera module (6) is fixedly installed on the connecting rod (7) of one group of sliding modules, and the light source module (9) is fixedly installed on the connecting rod (7) of the other group of sliding modules.
3. A wellhead foam detection device according to claim 1, characterized in that: the detection method based on the wellhead foam detection device comprises the following steps of:
the motor (10) drives the hub (3) to rotate clockwise around the chute for one circle, so that the camera module (6) shoots a complete image of the foam state in the pipeline, then the motor (10) drives the hub (3) to rotate anticlockwise around the chute for one circle, so that the coil is reset to avoid winding, the display (11) displays the shot image, so that the foam state in the pipeline is convenient to directly observe, if the foam exists in the pipeline, the displayed image can generate areas with different brightness, and the image processor (12) can obtain the foam content in the pipeline by calculating the proportion of areas of dark places and bright places in the image;
let the circular area displayed by the display be S, and the sum of the open areas in the circular area be S 1 The method comprises the steps of carrying out a first treatment on the surface of the Then:
S 2 ＝S-S 1
wherein: s is S 2 K is the foam content in the pipeline, which is the sum of dark areas.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210140850.6A CN114460008B (en) | 2022-02-16 | 2022-02-16 | Wellhead foam detection device and method |
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| CN202210140850.6A CN114460008B (en) | 2022-02-16 | 2022-02-16 | Wellhead foam detection device and method |
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| CN114460008B true CN114460008B (en) | 2023-11-21 |
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