CN217770200U

CN217770200U - Camera device for underground imaging

Info

Publication number: CN217770200U
Application number: CN202221563437.2U
Authority: CN
Inventors: 许剑; 郭莉霞; 赵华; 李玲; 杜洋
Original assignee: China Petroleum and Chemical Corp; Sinopec Southwest Oil and Gas Co
Current assignee: China Petroleum and Chemical Corp; Sinopec Southwest Oil and Gas Co
Priority date: 2022-06-22
Filing date: 2022-06-22
Publication date: 2022-11-08
Anticipated expiration: 2032-06-22

Abstract

The utility model belongs to oil and gas exploitation field specifically discloses a camera device for formation of image in pit. The underground camera comprises a first part, a second part and a third part, wherein the first part comprises a shell, a light-emitting unit arranged in the shell and a camera which is arranged in the light-emitting unit and used for shooting underground; and the second part is fixedly connected with the first part and comprises a light-transmitting mirror and a reflector fixedly connected with the light-transmitting mirror. Wherein the reflector is connected with the first portion. Wherein the reflector is configured to be able to reflect light of the light emitting unit to the tube wall. The utility model discloses can provide sufficient illumination environment for making a video recording in the pit to improve the definition of formation of image.

Description

Camera device for underground imaging

Technical Field

The utility model relates to an oil and gas exploitation field specifically relates to a camera device for formation of image in pit.

Background

The underground camera shooting is a novel optical logging technology, and mainly comprises the step of shooting the underground inner wall under the irradiation of a light source through a camera lens, so that the damage condition of an oil pipe in a well can be observed more visually, and meanwhile, the investigation of underground accidents can be assisted. However, the existing technology is not mature, so that the effect of shooting the underground by the camera lens is not good.

However, the prior art does not address the above-described apparatus.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a camera device for form image in pit, it can provide sufficient illumination environment for making a video recording in the pit to improve the definition of formation of image.

According to the utility model, the utility model provides a camera device for forming images in pit, including the first part, the first part includes the casing, sets up the luminescence unit in the casing, and sets up in the luminescence unit and be used for the camera of making a video recording in the pit; the second part is fixedly connected with the first part and comprises a light-transmitting mirror and a reflector fixedly connected with the light-transmitting mirror, wherein the reflector is connected with the first part; wherein the reflector is configured to reflect light of the light emitting unit to a pipe wall.

In one embodiment, the reflector is configured as a hollow sleeve and comprises a cylinder wall, and a first end surface and a second end surface which are respectively arranged at two ends of the cylinder wall, wherein the first end surface is connected with the light-transmitting mirror, and the second end surface is connected with the first part.

In one embodiment, a diameter of the first end surface is not smaller than a diameter of the light emitting unit.

In one embodiment, the cross-sectional area of the reflector is tapered from the first end face to the second end face.

In one embodiment, the cylinder wall is angled from horizontal in the range of 15 ° to 75 °.

In one embodiment, the light-transmissive mirror is made of convex lenses having mirror surfaces of equal thickness.

In one embodiment, the mirror surface of the convex lens is provided with a coating layer

In one embodiment, the light-transmitting mirror, the reflector, and the camera are disposed on the same axis.

In one embodiment, the first portion further includes a first glass disposed within the housing and enclosing the light emitting unit, and a second glass disposed within the housing and enclosing the camera, the first glass and the second glass being separated by a barrier.

In one embodiment, the second end face of the reflector is fixed to the second glass by screw threads.

Drawings

The invention will be described in detail below with reference to the attached drawings, in which:

fig. 1 schematically shows the structure of a camera device for downhole imaging according to the present invention.

In the drawings, like parts are given like reference numerals. The figures are not drawn to scale.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

Fig. 1 schematically shows the structure of a camera device 100 for downhole imaging according to the present invention. As shown in fig. 1, a camera device 100 for downhole imaging according to the present invention mainly includes a first portion 10 and a second portion 20. The first part 10 is a main structure of the camera device 100, and is used for recording the underground situation in real time. The second portion 20 is fixedly connected to the first portion 10 for providing the first portion 10 with an enhanced brightness working environment.

According to the present invention, the first part 10 includes a housing 11, a light emitting unit 12, and a camera 13. Wherein the housing 11 is configured as a hollow cylindrical structure. The light emitting unit 12 is disposed inside the housing 11 in the circumferential direction. The light emitting unit 12 is configured to emit light so as to provide a sufficient lighting environment for the camera 13. The camera 13 is arranged inside the light emitting unit 12, whereby the camera 13 is covered with sufficient light in the circumferential direction to enable the camera device 100 to image clearly downhole.

According to the present invention, the second portion 20 comprises a light transmissive mirror 21 and a reflector 30. The transparent mirror 21 is fixedly connected to the reflector 30 for receiving the light emitted from the light emitting unit 12. The light transmissive mirror 21 is configured to transmit light into the camera head 13 to meet the illumination requirements of the base of the camera 100 for taking images downhole. One end of the reflector 30 is fixedly connected with the housing 11, and the other end is fixedly connected with the transparent mirror 21. The reflector 30 is configured to reflect the light emitted from the light emitting unit 12 to the wall of the downhole pipe, and the light is transmitted to the camera 13 through the transparent mirror 21, so as to provide sufficient luminous flux for the camera 13, thereby improving the definition of the image formed by the camera device 100 downhole.

According to the utility model discloses, light-transmitting mirror 21 is made by the convex lens that mirror surface thickness equals. In this way, the brightness of the light received at each position of the mirror surface of the transparent mirror 21 is made uniform, thereby improving the quality of the image of the imaging device 100 in the well.

According to the utility model discloses an embodiment, be provided with the coating on the mirror surface of light-transmitting mirror 21. In this way, in the process of taking a picture in the pit, the light-transmitting mirror 21 can effectively reduce the pollutants attached to the surface, thereby ensuring the shooting effect of the camera device 100 taking a picture in the pit. In an embodiment of the present invention, since the transparent mirror 21 is made of a convex lens having a radian, the transparent mirror 21 can more easily wash the mirror surface by means of airflow or water flow during the process of being lowered in the well, thereby achieving the anti-pollution effect of the image pickup apparatus 100.

According to the present invention, the reflector 30 is constructed as a hollow sleeve and comprises a cylinder wall 31, and a first end surface 32 and a second end surface 33 arranged at both ends of the cylinder wall 31, respectively. The first end face 32 is fixedly connected to the transparent mirror 21, and the second end face 33 is fixedly connected to the housing 11 (specifically, the second glass 15 on the housing 11, which will be described later). The reflector 30 is configured to reflect light emitted by the light emitting unit 12 to the wall of the downhole well, thereby providing a sufficient lighting environment for the camera device 100.

In one embodiment of the present invention, the diameter of the first end face 32 is not smaller than the diameter of the light emitting unit 12. Therefore, the light emitted by the light emitting unit 12 can be sufficiently reflected to the wall of the well through the wall 31 of the reflector 30, and thus the image capturing apparatus 100 can operate in an environment with sufficient light, so as to obtain a clearer image in the well.

In one embodiment of the present invention, the cross-sectional area of the reflector 30 is gradually reduced from the first end surface 32 to the second end surface 33. Thus, the light-transmitting mirror 21 can sufficiently transmit the received light to the camera 13 through the inside of the reflector 30, so as to meet the requirement of the camera device 100 on the illumination environment and improve the quality of the underground imaging.

In one embodiment of the present invention, the angle between the wall 31 of the reflector 30 and the horizontal direction is in the range of 15 ° to 75 °. Thus, the position of the light emitted by the light emitting unit 12 reflected to the wall of the downhole pipe is adjusted by changing the included angle between the cylinder wall 31 and the horizontal direction. By means of the adjustment mode, the camera 13 can sufficiently receive light of different angles reflected by the pipe wall from different positions, and therefore the quality of images formed by the camera 100 in the underground is improved.

In an embodiment of the present invention, the transparent mirror 21, the reflecting cover 30, and the camera 13 are disposed on the same axis. In this way, the light-transmitting mirror 21, the reflector 30 and the camera 13 form a combined body. The combination can more easily provide a suitable downhole imaging environment for the imaging device 100.

According to an embodiment of the present invention, the first part 10 further comprises a first glass 14 and a second glass 15. Wherein the first glass 14 is configured in a ring structure and disposed within the housing 11. The first glass 14 is used to enclose the light emitting unit 12 within the housing 11. In this way, the first glass 14 can protect and prevent pollution to the light emitting unit 12 during the process of taking images downhole. The second glass 15 is constructed in a disc structure and is disposed inside the housing 11. The second glass 15 is used to enclose the camera 13 within the housing 11. In this way, the second glass 15 can protect and prevent pollution to the camera 13 during the process of taking a picture in the well.

In one embodiment of the present invention, the first glass 14 and the second glass 15 are separated by a baffle 16. Wherein the barrier 16 is configured in a ring structure, which can effectively separate the camera 13 from the light emitting unit 12. Specifically, the light emitting unit 12 can only reflect light to the wall of the downhole well through the wall 31 of the reflector 30; the camera 13 can only receive light reflected to the tube wall through the light-transmitting mirror 21.

In one embodiment of the present invention, the second end surface 33 of the reflector 30 is fixed on the second glass 15 by screw threads. In this way, the light-transmitting mirror 21 can more easily transmit the received light to the camera 13 through the inside of the reflector 30, thereby satisfying the illumination environment required for the image pickup apparatus 100.

According to the utility model discloses a reflector 30 for camera device 100 that forms images in pit, it can be with the light reflection to the pipe wall in the pit that light-emitting unit 12 sent to satisfy camera device 100 illumination requirement in the pit, improved the quality of forming images in the pit from this. Furthermore, the utility model discloses still make the convex lens that has the coating through with light-transmitting mirror 21 to the definition of camera device 100 formation of image in the pit has been improved.

The above is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto. Those skilled in the art can easily make changes or variations within the scope of the present disclosure, and such changes or variations are intended to be covered by the scope of the present disclosure. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A camera device for downhole imaging, comprising:

a first part (10), the first part (10) comprising a housing (11), a light emitting unit (12) disposed within the housing (11), and a camera (13) disposed within the light emitting unit (12) for taking a picture downhole;

a second part (20) fixedly connected to the first part (10), the second part (20) comprising a light-transmissive mirror (21), and a reflector (30) fixedly connected to the light-transmissive mirror (21), wherein the reflector (30) is connected to the first part (10);

wherein the reflector (30) is configured to be able to reflect light of the light emitting unit (12) to a pipe wall.

2. Camera device for downhole imaging according to claim 1, wherein the reflector (30) is configured as a hollow sleeve and comprises a cylinder wall (31) and a first end surface (32) and a second end surface (33) arranged at both ends of the cylinder wall (31), respectively, wherein the first end surface (32) is connected with the transparent mirror (21) and the second end surface (33) is connected with the first part (10).

3. Camera device for downhole imaging according to claim 2, wherein the diameter of the first end face (32) is not smaller than the diameter of the light emitting unit (12).

4. A camera device for downhole imaging according to claim 3, wherein the cross-sectional area of the reflector (30) tapers from the first end face (32) to the second end face (33).

5. Camera arrangement for downhole imaging according to claim 4, wherein the angle of the cylinder wall (31) to the horizontal is in the range of 15 ° to 75 °.

6. The camera device for downhole imaging according to claim 5, wherein the transparent mirror (21) is made of convex lenses with equal mirror thickness.

7. The camera device for downhole imaging according to claim 6, wherein the mirror surface of the convex lens is provided with a coating.

8. A camera device for downhole imaging according to claim 7, wherein the transparent mirror (21), the reflector (30) and the camera head (13) are arranged on the same axis.

9. Camera device for downhole imaging according to claim 8, wherein the first part (10) further comprises a first glass (14) arranged in the housing (11) and enclosing the light emitting unit (12), and a second glass (15) arranged in the housing (11) and enclosing the camera head (13), the first glass (14) and the second glass (15) being separated by a barrier (16).

10. A camera device for down-hole imaging according to claim 9, wherein the second end face (33) of the reflector (30) is screwed to the second glass (15).