CN114460008A - Wellhead foam detection device and method - Google Patents
Wellhead foam detection device and method Download PDFInfo
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- CN114460008A CN114460008A CN202210140850.6A CN202210140850A CN114460008A CN 114460008 A CN114460008 A CN 114460008A CN 202210140850 A CN202210140850 A CN 202210140850A CN 114460008 A CN114460008 A CN 114460008A
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- 239000006260 foam Substances 0.000 title claims abstract description 59
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000000034 method Methods 0.000 title description 4
- 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
- 239000002518 antifoaming agent Substances 0.000 abstract description 7
- 230000008901 benefit Effects 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000007788 liquid Substances 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000004088 foaming agent Substances 0.000 description 3
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 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
- 239000000243 solution 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
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- 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
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- 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 a wellhead foam detection method, wherein the wellhead foam detection device comprises 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 field pipeline, the pipeline locking ring is fixed on the pipeline, the guide rails are fixedly connected with the pipeline locking ring, two groups of sliding modules are arranged, two groups of sliding modules are symmetrically arranged on the two guide rails in a mirror image mode respectively, the camera module and the light source module are arranged on the two groups of sliding modules respectively, 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 rails, the camera module shoots to obtain images, the images are 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 content of the foam in the pipeline can be realized, and the defoaming agent with corresponding discharge capacity and proportion is guided to be put in according to the content of the foam, so that the cost is reduced, and the economic benefit is improved.
Description
Technical Field
The invention relates to the technical field of gas production wellhead foam detection, in particular to a wellhead foam detection device and method in a foam drainage gas production process based on machine vision.
Background
The basic principle of gas production by foam drainage is that a certain surfactant (foaming agent) capable of foaming when meeting water is injected from the well head to the well bottom, and after the accumulated liquid in the well bottom contacts with the foaming agent, a large amount of low-density water-containing foam is generated by means of stirring of natural gas. As the bubble interface is generated, the liquid is continuously lifted, and the liquid at the bottom of the foam column is continuously supplemented until the well bottom water is completely replaced. The foaming agent enables the accumulated liquid in the shaft to form foam through the functions of dispersion, drag reduction, washing and the like, and enables insoluble dirt such as silt, sludge and the like to be wrapped in the foam and discharged along with airflow, thereby playing the roles of dredging a gas-water channel, increasing the yield and stabilizing the yield. In the foam drainage gas production process, a large amount of low-density water-containing foam coming out from a wellhead needs to be eliminated by adding a defoaming agent, so that the foam is prevented from entering a compressor, and the service life of the compressor is prolonged.
In the existing foam detection method, personnel are arranged to stay on site, samples are taken from a separator at regular intervals, and the feeding proportion or discharge amount of the defoaming agent is adjusted according to the sampling result. Because the foam from the well mouth exists in the pipeline, the foam condition in the pipeline can not be directly observed, the foam sampled from the separator is accumulated for a period of time, not the real-time foam condition in the pipeline, the change of the feeding proportion or the discharge amount of the defoaming agent according to the sampling result of the separator is not accurate, the consumption of the defoaming agent raw material by the existing injection system is large, and the economic benefit can not be improved for a long time.
Disclosure of Invention
The invention provides a wellhead foam detection device and a wellhead foam detection method aiming at the defects of the prior art. The foam content in the pipeline can be detected in real time, and the proportion or the discharge amount of the added defoaming agent can be accurately guided.
In order to realize the purpose of the invention, the technical scheme adopted by the invention is as follows:
a wellhead foam detection device, comprising: the device comprises 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 each pipeline locking ring is in interference fit with the outer diameter of the glass tube 8, the two pipeline locking rings 1 are respectively sleeved at two ends of the glass tube 8 and fixed, the upper end and the lower end of the outer wall of each annular guide rail 2 are provided with protrusions, the side surface of each protrusion is provided with a hole, the upper end and the lower end of the outer wall of each pipeline locking ring 1 are also provided with protrusions, the corresponding positions of the side surfaces of the protrusions are also provided with holes, the two annular guide rails 2 are fixedly connected with the two pipeline locking rings 1 in a symmetrical mirror image mode through bolts penetrating the holes, and the inner wall and the outer wall of each annular guide rail 2 are provided with chutes which are circumferentially arranged along the ring shape;
the two sets of sliding modules are symmetrically arranged on the two annular guide rails 2 in a mirror image mode respectively, the camera module 6 is fixedly arranged on one set of sliding module, the light source module 9 is fixedly arranged on the other set of sliding module, 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 a motor 10 to rotate around the sliding chute for a circle; and then camera module 6 shoots a complete circle of image in glass tube 8, motor 10, camera module 6 and light source module 9 work through computer control, camera module 6 transmits the image of shooing to the computer, light source module 9 is used for supplementing the light in glass tube 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 of dark place and bright place in the image.
Further, the sliding module includes: the device comprises two 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 face of one circular arc connecting plate 5 are respectively connected with one cylindrical joint 4, one cylindrical joint 4 is provided with one wheel hub 3, the two wheel hubs 3 are symmetrically distributed and matched with the chutes 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 arranged on the annular guide rail 2 in a mirror image manner; the two arc connecting plates 5 are connected through a connecting rod 7;
the connecting rod 7 of one group of sliding modules is fixedly provided with the camera module 6, and the connecting rod 7 of the other group of sliding modules is fixedly provided with the light source module 9.
The invention also discloses a wellhead foam detection method, which comprises the following steps:
motor 10 drives wheel hub 3 around the spout clockwise rotation round, make camera module 6 shoot the interior foam state image of the complete pipeline of next round, then motor 10 drives wheel hub 3 around the spout anticlockwise rotation round, make the coil avoid the winding that resets, display 11 shows the image of shooing, be convenient for directly observe the interior foam state of pipeline, if there is the foam in the pipeline, the image of demonstration can produce the region of light and shade difference, image processor 12 is through calculating the proportion of the area of dark place and bright place in the image, can obtain the foam content in the pipeline.
The circular area displayed by the display is S, and the sum of the areas of the open positions in the circular area is S1. Then:
S2＝S-S1
in the formula: s2K is the sum of the areas of the dark places and the content of foam in the pipeline.
Compared with the prior art, the invention has the advantages that:
1. surround the shooting through the camera to the glass pipe, can directly obtain the state of foam in the pipeline.
2. Through processing the shot image, the real-time display of the foam content in the pipeline can be realized.
3. And the amount of the foam content is used for guiding the feeding of the defoaming agent with corresponding discharge capacity and proportion, so that the cost is reduced, and the economic benefit is improved.
Drawings
FIG. 1 is a schematic sectional structure diagram of a wellhead foam detection device according to an embodiment of the invention;
FIG. 2 is a schematic structural diagram of a wellhead foam detection device according to an embodiment of the 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 method comprises the following steps of 1-pipeline locking ring, 2-guide rail, 3-wheel hub, 4-cylindrical joint, 5-arc connecting plate, 6-camera module, 7-connecting rod, 8-glass tube, 9-light source module, 10-motor, 11-display and 12-image processor.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be further described in detail below with reference to the accompanying drawings by way of examples.
In the description of the present invention, it is to be understood that the terms "circumferential," "radial," "clockwise," and the like refer to orientations or positional relationships based on those illustrated in the drawings, which are used for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, are not to be construed as limiting the present invention.
In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
As shown in fig. 1 and 2, a wellhead foam testing device comprises: a glass tube 8, a pipeline locking ring 1, an annular guide rail 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 each pipeline locking ring is in interference fit with the outer diameter of the glass tube 8, the two pipeline locking rings 1 are respectively sleeved at two ends of the glass tube 8 and fixed, the upper end and the lower end of the outer wall of each annular guide rail 2 are provided with protrusions, the side surface of each protrusion is provided with a hole, the upper end and the lower end of the outer wall of each pipeline locking ring 1 are also provided with protrusions, the corresponding positions of the side surfaces of the protrusions are also provided with holes, the two annular guide rails 2 are fixedly connected with the two pipeline locking rings 1 in a symmetrical mirror image mode through bolts penetrating the holes, and the inner wall and the outer wall of each annular guide rail 2 are provided with chutes which are circumferentially arranged along the ring shape;
the slip module has two sets ofly, and a set of slip module includes: the device comprises two 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 face of one circular arc connecting plate 5 are respectively connected with one cylindrical joint 4, one cylindrical joint 4 is provided with one wheel hub 3, the two wheel hubs 3 are symmetrically distributed and matched with the chutes 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 arranged on the annular guide rail 2 in a mirror image manner; the two arc connecting plates 5 are connected through a connecting rod 7;
two sets of sliding modules are symmetrically installed on the annular guide rail 2 in a mirror image mode, a camera module 6 is fixedly installed on a connecting rod 7 of one set of sliding modules, a light source module 9 is fixedly installed on a connecting rod 7 of the other set of sliding modules, and the camera module 6 and the light source module 9 are always kept unchanged in a mirror image position aligned with the glass tube 8.
The hub 3 is driven by the motor 10 to rotate around the chute for a circle; and then camera module 6 shoots a complete circle of image in glass tube 8, motor 10, camera module 6 and light source module 9 work through computer control, camera module 6 transmits the image of shooing to the computer, light source module 9 is used for supplementing the light in glass tube 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 of dark place and bright place in the image.
A wellhead foam detection method comprises the following steps:
motor 10 drives wheel hub 3 around the spout clockwise rotation round, make camera module 6 shoot the foam state image in the complete pipeline of next round, then motor 10 drives wheel hub 3 around the spout anticlockwise rotation round, make the coil avoid the winding that resets, display 11 shows the image of shooing, be convenient for directly observe the foam state in the pipeline, if there is the foam in the pipeline, the image of demonstration can produce the region (figure 3) of light and shade difference, image processor 12 is through calculating the proportion of the area of dark place and bright place in the image, can obtain the foam content in the pipeline.
The circular area displayed by the display is S, and the sum of the areas of the open positions in the circular area is S1. Then:
S2＝S-S1
in the formula: s2K is the sum of the areas of the dark places and the content of foam in the pipeline.
It will be appreciated by those of ordinary skill in the art that the examples described herein are intended to assist the reader in understanding the manner in which the invention is practiced, and it is to be understood that the scope of the invention is not limited to such specifically recited statements and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (3)
1. A wellhead foam detection device, comprising: the device comprises 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 each pipeline locking ring is in interference fit with the outer diameter of the glass tube (8), the two pipeline locking rings (1) are respectively sleeved at two ends of the glass tube (8) 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 ring (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 fixedly connected with the two pipeline locking rings (1) in a symmetrical mirror image mode through bolts penetrating into the holes, and the inner wall and the outer wall of each annular guide rail (2) are provided with chutes which are circumferentially arranged along the ring;
the two groups of sliding modules are symmetrically arranged on the two annular guide rails (2) in a mirror image mode respectively, 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 a motor (10) to rotate around the sliding groove for a circle; and then camera module (6) shoots a complete circle of image in glass pipe (8), motor (10), camera module (6) and light source module (9) are through computer control work, camera module (6) transmits the image of shooing to the computer, 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 is shown through display (11) of computer, install image processor (12) in the computer, image processor (12) are through calculating the proportion of the area of dark place and bright place in the image, obtain the foam content in the pipeline.
2. A wellhead foam detection device as claimed in claim 1, wherein: the sliding module includes: the device comprises two 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 face of one circular arc connecting plate (5) are respectively connected with one cylindrical joint (4), one cylindrical joint (4) is provided with one wheel hub (3), the two wheel 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 arranged on the annular guide rail (2) in a mirror image manner; 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 as claimed in claim 1, wherein: the detection method based on the wellhead foam detection device comprises the following steps:
the motor (10) drives the hub (3) to rotate clockwise for one circle around the sliding groove, so that the camera module (6) shoots a next circle of complete foam state images in the pipeline, then the motor (10) drives the hub (3) to rotate anticlockwise for one circle around the sliding groove, so that the coil is reset to avoid winding, the shot images are displayed by the display (11), the foam state in the pipeline can be directly observed conveniently, if foam exists in the pipeline, the displayed images can generate areas with different light and shade, and the image processor (12) can obtain the foam content in the pipeline by calculating the ratio of the areas of the dark place and the bright place in the images;
the circular area displayed by the display is S, and the sum of the areas of the open positions in the circular area is S1(ii) a Then:
S2＝S-S1
in the formula: s2K is the sum of the areas of the dark places and the content of foam in the pipeline.
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| CN202210140850.6A CN114460008B (en) | 2022-02-16 | 2022-02-16 | Wellhead foam detection device and method |
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