CN108632516A - A kind of downhole optic fiber imaging camera machine - Google Patents
A kind of downhole optic fiber imaging camera machine Download PDFInfo
- Publication number
- CN108632516A CN108632516A CN201810738208.1A CN201810738208A CN108632516A CN 108632516 A CN108632516 A CN 108632516A CN 201810738208 A CN201810738208 A CN 201810738208A CN 108632516 A CN108632516 A CN 108632516A
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- China
- Prior art keywords
- image
- unit
- lens
- imaging
- forward sight
- Prior art date
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- 238000003384 imaging method Methods 0.000 title claims abstract description 48
- 239000000835 fiber Substances 0.000 title claims abstract description 37
- 239000013307 optical fiber Substances 0.000 claims abstract 2
- 239000011521 glass Substances 0.000 claims description 13
- 229910052594 sapphire Inorganic materials 0.000 claims description 13
- 239000010980 sapphire Substances 0.000 claims description 13
- 230000005540 biological transmission Effects 0.000 claims description 8
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000006835 compression Effects 0.000 abstract 1
- 238000007906 compression Methods 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/54—Mounting of pick-up tubes, electronic image sensors, deviation or focusing coils
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/45—Cameras or camera modules comprising electronic image sensors; Control thereof for generating image signals from two or more image sensors being of different type or operating in different modes, e.g. with a CMOS sensor for moving images in combination with a charge-coupled device [CCD] for still images
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/50—Constructional details
- H04N23/55—Optical parts specially adapted for electronic image sensors; Mounting thereof
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
- H04N23/56—Cameras or camera modules comprising electronic image sensors; Control thereof provided with illuminating means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
- H04N7/183—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast for receiving images from a single remote source
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/22—Adaptations for optical transmission
Abstract
The present invention relates to a kind of downhole optic fiber imaging camera machines, it include mainly the spread of the rumours unit, video compressing unit, storage unit, imaging unit, lighting unit, wherein imaging unit includes forward sight camera and side view camera, two cameras have corresponding light source, image is converged to through lens in imaging fibre in well, image in well is restored on sensitive chip through lens in the other end of optical fiber, output forward sight image and side elevation image after sensitive chip is digitized into, image carries out video compress by video compressing module, video image after compression is transmitted to ground system by the spread of the rumours unit with the digitized image of 2 frame per second through logging cable, with in the digitized image storage to storage unit of 25 30 frame per second, when instrument proposes well head, it is read on ground.Due to the use of imaging fibre, sensitive chip is conducive to the operating temperature for improving instrument, and the volume of side view camera is made to further decrease, apparatus structure is further simplified far from heat producing light sources.
Description
Technical field
The present invention relates to oil, exploration engineering fields, and in particular to arrives a kind of downhole imaging instrument of memory-type imaging fiber
Device is applied in open hole well or cased well.
Background technology
Existing downhole video cameras, mainly there is the following two kinds：The downhole video cameras of independent memory-type, is unable to uploading pictures,
Can not observe downhole conditions on ground, and be lighting module with sensitive chip together with design structure, cause instrument
Operating temperature is relatively low, is not suitable in deep-well or severe hole condition operation；The downhole video cameras transmitted using fiber optic cables, Ke Yishi
When uploaded videos, but also need to prepare fiber optic cables, go into the well of high cost.The front of existing lighting unit direct projection camera,
It is likely to result in front grain light-reflection, it is inaccurate that camera surveys light.In order to make up disadvantages described above, we are in camera structure, illumination
It is all redesigned in structure.
Invention content
In order to overcome downhole video cameras to illuminate so that sensitive chip temperature increases and limits the operating temperature of instrument and makes
Use environment.The object of the present invention is to provide a kind of downhole optic fiber imaging camera machines, due to the use of imaging fibre in imaging so that
Light structures and sensitive chip separate so that the operating temperature of instrument improves, headlamp with central shaft at the design at 25 ° of angles, both
Clearer can illuminate the borehole wall, but avoid because light cause by force very much camera acquisition vision signal have it is reflective；Headlamp and at
As lens front is devised equipped with high-temperature and high-presure resistent light transmission sapphire glass window so that instrument high temperature high voltage resistant.
To achieve the above object, the present invention uses following technical scheme：
A kind of downhole optic fiber imaging camera machine includes mainly the spread of the rumours unit, video compressing unit, storage unit, imaging unit, photograph
Bright unit；
Wherein, imaging unit output end is connected with video compressing unit, video compressing unit output end one end and the spread of the rumours unit phase
Even, the other end is connected with storage unit.
Imaging unit includes forward sight camera and side view camera, wherein forward sight camera includes lens one, imaging fibre
One, lens two, sensitive chip one, side view camera include lens three, imaging fibre two, lens four, sensitive chip two, lens one
It is respectively provided with high-temperature and high-presure resistent light transmission sapphire glass with three front end of lens.
Lighting unit includes forward sight lighting module and side view lighting module, wherein forward sight lighting module uses 9 high temperature resistants
LED light is evenly distributed on the structure of central shaft, and direction and the instrument axis direction of LED light are in 25 ° of angles, each LED light front end
Equipped with high-temperature and high-presure resistent light transmission sapphire glass.
The operation principle of downhole optic fiber imaging camera machine：Forward sight image and side elevation image are respectively through lens one and lens in well
Three converge in imaging fibre one and imaging fibre two, in the other end of imaging fibre one and imaging fibre two respectively through lens two
Forward sight image in well and side elevation image are restored to respectively on sensitive chip one and sensitive chip two with lens four, sensitive chip one
After being digitized into sensitive chip two, the digitlization forward sight image and side elevation image of 25-30 frames per second are exported, both numbers
Change image, send video compressing unit, carry out video compress, the video image after compressing is logical with the digitized image of 2 frame per second
It crosses the spread of the rumours unit and is transmitted to ground system through logging cable, stored into storage unit with the digitized image of 25-30 frames per second,
When instrument proposes well head, read on ground.
It is an advantage of the invention that：
1, camera has used imaging fibre, makes sensitive chip far from heat producing light sources, is conducive to the operating temperature for improving instrument.
2. the direction of 9 illuminating LED lamps of forward sight is in 25 ° of angles with instrument axis direction, this structure can either be clearer
Illuminate the borehole wall, but avoid because light cause by force very much camera acquisition vision signal have it is reflective.
3. each LED light front end is equipped with high-temperature and high-presure resistent light transmission sapphire glass so that instrument can be with high temperature or severe
Operation under hole condition.
4, due to the use of imaging fibre, the volume of side view camera further decreases, and apparatus structure is made to be further simplified.
Description of the drawings
The instrument composition schematic diagram of Fig. 1 present invention；
The lighting unit apparatus structure schematic diagram of Fig. 2 present invention.
Specific implementation mode
As shown in Figure 1 and Figure 2, a kind of downhole optic fiber imaging camera machine includes mainly the spread of the rumours unit 11, video compressing unit
12, storage unit 13, imaging unit 14, forward sight lighting unit 15, side view lighting unit 16；
Wherein, 14 output end of imaging unit is connected with video compressing unit 12,12 output end one end of video compressing unit and the spread of the rumours
Unit 11 is connected, and the other end is connected with storage unit 13.
Forward sight camera includes lens 1, imaging fibre 1, lens 2 22, sensitive chip 1, side view camera
Including lens 3 23, imaging fibre 2 26, lens 4 24, sensitive chip 2 28, lens 1 and 3 23 front end of lens fill respectively
There is high-temperature and high-presure resistent light transmission sapphire glass.
Lighting unit includes forward sight lighting module and side view lighting module, wherein forward sight lighting module uses 9 high temperature resistants
LED light is evenly distributed on the structure of central shaft, and direction and the instrument axis direction of LED light are in 25 ° of angles, each LED light front end
Equipped with high-temperature and high-presure resistent light transmission sapphire glass.
The operation principle of downhole optic fiber imaging camera machine：Forward sight image and side elevation image be respectively through lens 1 and thoroughly in well
Mirror 3 23 converges in imaging fibre 1 and imaging fibre 2 26, in the other end of imaging fibre 1 and imaging fibre 2 26
Forward sight image in well and side elevation image are restored to sensitive chip 1 and photosensitive respectively through lens 2 22 and lens 4 24 respectively
On chip 2 28, after sensitive chip 1 and sensitive chip 2 28 are digitized into, the digitlization forward sight of 25-30 frames per second is exported
Image and side elevation image, both digitized images send video compressing unit 12, carry out video compress, the video after compressing
Image is transmitted to ground system, with 25-30 per second by the spread of the rumours unit 11 with the digitized image of 2 frame per second through logging cable
In the digitized image storage to storage unit 13 of frame, when instrument proposes well head, read on ground.
As shown in Fig. 2, headlamp 6, lighting window sapphire glass 8 and the installation of one window sapphire glass 9 of imaging lens system
Onto lens mount 6, what the window of the cam lens 1 of the instrument and the window of headlamp 7 were all separate from, and
There are the slot for being used for installing sealing ring together, the window of 9 headlamps 7 to be circumferentially uniformly distributed on each window inner wall
, and be in each 25 ° of angle, one window of lighting window sapphire glass 8 and imaging lens system with the central shaft of instrument
Sapphire glass 9 is installed in corresponding window, and the circular circlip of inner utilization fixes lens 1, lens mount 6
There are 3 slots to be connected to window sapphire glass 9 and the outside of lens 1 on end face, in order to be able to lens 1 when will go into the well
The bubble that surface generates preferably is drained.
The foregoing is merely presently preferred embodiments of the present invention, and scope of protection of the present invention is not limited thereto.It is any to be based on
Equivalent transformation on the basis of technical solution of the present invention is all fallen within the protection scope of the present invention.
Claims (4)
1. a kind of downhole optic fiber imaging camera machine, it is characterised in that：Include mainly the spread of the rumours unit, video compressing unit, storage list
Member, imaging unit, forward sight lighting unit, side view lighting unit；
Wherein, image-forming module output end is connected with video compressing module, video compressing unit output end one end and the spread of the rumours unit phase
Even, the other end is connected with storage unit.
2. downhole optic fiber imaging camera machine according to claim 1, it is characterised in that：The imaging unit includes that forward sight is taken the photograph
As head and side view camera, wherein forward sight camera includes lens one, imaging fibre one, lens two, sensitive chip one, side view
Camera includes lens three, imaging fibre two, lens four, sensitive chip two, and lens one and three front end of lens are respectively provided with resistance to height
The light transmission sapphire glass of warm high pressure.
3. downhole optic fiber imaging camera machine according to claim 1, which is characterized in that the lighting unit includes that forward sight is shone
Bright module and side view lighting module, wherein forward sight lighting module is evenly distributed on the knot of central shaft using 9 high temperature resistant LED light
Structure, direction and the instrument axis direction of LED light are in 25 ° of angles, and each LED light front end is equipped with high-temperature and high-presure resistent light transmission sapphire
Glass.
4. the operation principle of downhole optic fiber imaging camera machine according to claim 1, it is characterised in that：Forward sight image in well
Converged in imaging fibre one and imaging fibre two through lens one and lens three respectively with side elevation image, imaging fibre one and at
As forward sight image in well and side elevation image are restored to photosensitive core by the other end of optical fiber two respectively through lens two and lens four respectively
On piece one and sensitive chip two, after sensitive chip one and sensitive chip two are digitized into, the digitlization of 25-30 frames per second is exported
Forward sight image and side elevation image, both digitized images send video compressing unit, carry out video compress, regarding after compressing
Frequency image is transmitted to ground system, with 25-30 per second by the spread of the rumours unit with the digitized image of 2 frame per second through logging cable
In the digitized image storage to storage unit of frame, when instrument proposes well head, read on ground.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810738208.1A CN108632516A (en) | 2018-07-06 | 2018-07-06 | A kind of downhole optic fiber imaging camera machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810738208.1A CN108632516A (en) | 2018-07-06 | 2018-07-06 | A kind of downhole optic fiber imaging camera machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108632516A true CN108632516A (en) | 2018-10-09 |
Family
ID=63688716
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810738208.1A Withdrawn CN108632516A (en) | 2018-07-06 | 2018-07-06 | A kind of downhole optic fiber imaging camera machine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108632516A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109546755A (en) * | 2019-01-30 | 2019-03-29 | 重庆大学 | For installing the cabinet and installation method of transmission line of electricity image monitoring terminal |
| CN110242282A (en) * | 2019-07-19 | 2019-09-17 | 西安威盛电子科技股份有限公司 | A kind of downhole video instrument |
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| US20150007983A1 (en) * | 2013-07-04 | 2015-01-08 | Schlumberger Technology Corporation | Downhole Imaging Systems and Methods |
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2018
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Patent Citations (12)
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|---|---|---|---|---|
| CN2390362Y (en) * | 1999-10-22 | 2000-08-02 | 徐凌堂 | Visible light split light source illuminating device for borehole TV |
| CN2784875Y (en) * | 2005-03-22 | 2006-05-31 | 范光照 | Novel micro three-dimensional topography measurer based on fiber-optic image bundles |
| CN105358892A (en) * | 2013-06-12 | 2016-02-24 | 建筑机械公司 | Pipe inspection device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109546755A (en) * | 2019-01-30 | 2019-03-29 | 重庆大学 | For installing the cabinet and installation method of transmission line of electricity image monitoring terminal |
| CN109546755B (en) * | 2019-01-30 | 2020-06-23 | 重庆大学 | Case for installing image monitoring terminal of power transmission line and installation method |
| CN110242282A (en) * | 2019-07-19 | 2019-09-17 | 西安威盛电子科技股份有限公司 | A kind of downhole video instrument |
| CN110242282B (en) * | 2019-07-19 | 2024-04-19 | 西安威盛电子科技股份有限公司 | Underground video instrument |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20181009 |
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| WW01 | Invention patent application withdrawn after publication |