Coiled tubing built-in optical cable fixing device

Abstract

The utility model discloses a coiled tubing built-in optical cable fixing device which comprises a built-in cable layer, the built-in cable layer is arranged on the inner wall of a coiled tubing, the inner wall of the built-in cable layer is in contact connection with a lining layer, and the inner wall of the lining layer is in contact connection with an expansion block. The fixing device for the optical cable installed in the continuous oil pipe solves the problem that the optical cable in the continuous oil pipe is disorderly placed in the pipe, and consequently the optical cable is damaged.

Description

Technical Field

[0001] The utility model belongs to the technical field of continuous oil pipe cable operation equipment in oil field downhole operations, and particularly relates to a fixing device for optical cables installed in continuous oil pipes. Background Art

[0002] The use of coiled tubing (CT) is gradually increasing in oilfield workover operations, and cabled CT is of great significance to downhole visualization and the application of power tools. However, the current CT cabled technology has the following main problems: First, the existing optical cables in the CT easily swing and damage the optical fibers and cables inside the cable, resulting in line blockage; second, the optical cables in the CT are placed disorderly inside the tube, occupying a large space inside the tube, causing greater resistance to the liquid flow during circulation. Utility Model Content

[0003] The utility model aims to provide a fixing device for optical cables installed in a continuous oil pipe, which solves the problem that the optical cables in the continuous pipe are placed disorderly in the pipe, resulting in damage to the optical cables.

[0004] The technical solution adopted by the utility model is that the optical cable fixing device installed in the continuous oil pipe includes an internal cable layer, the internal cable layer is arranged on the inner wall of the continuous oil pipe, the inner wall of the internal cable layer is in contact with the inner lining layer, and the inner wall of the inner lining layer is in contact with the expansion block.

[0005] The utility model is also characterized in that:

[0006] The internal cable layer includes a cable protection layer, which is arranged on the inner wall of the continuous oil pipe. The inner wall of the cable protection layer contacts and connects the inner lining layer. The cable protection layer is provided with a plurality of through holes along the circumferential direction, and cables are passed through the plurality of through holes.

[0007] The cable protection layer includes a plurality of cable protection units, and the cross sections of the plurality of cable protection units are all in an arc shape.

[0008] One end of the plurality of cable protection units is provided with a tenon structure, and the other end of the plurality of cable protection units is provided with a mortise structure, and the plurality of cable protection units are connected in a mortise and tenon manner at their heads and tails.

[0009] The cables are embedded in the through holes of the cable protective layer.

[0010] The cable protective layer is a protective layer made of flexible material.

[0011] The inner lining layer is made of ductile and deformable material.

[0012] The beneficial effects of the utility model are:

[0013] The optical cable fixing device installed in the continuous oil pipe provided by the utility model is closely attached to the wall of the continuous oil pipe, provides a maximum internal space for the liquid flow channel, reduces the resistance to the liquid flow, fixes the optical cable firmly, and is not easily damaged during use. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the utility model of a device for fixing an optical cable in a coiled tubing;

[0015] Figure 2 This is a schematic cross-sectional view of a fixture for optical cables installed in a coiled tubing according to the present invention;

[0016] Figure 3 It is a structural schematic diagram of the cable protection unit of the present utility model.

[0017] In the figure, 1. Coiled tubing, 2. Cable protective layer, 3. Cable, 4. Liner, 5. Expansion block, 6. Through hole, 7. Cable protection unit. DETAILED DESCRIPTION

[0018] The present invention will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0019] The utility model provides a device for fixing optical cables in a continuous oil pipe. Figure 1 、 2 As shown, it includes an internal cable layer, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the internal cable layer is in contact with the inner lining layer 4, and the inner wall of the inner lining layer 4 is in contact with the expansion block 5. The internal cable layer includes a cable protection layer 2, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the cable protection layer 2 is in contact with the inner lining layer 4. The cable protection layer 2 is provided with a plurality of through holes 6 along the circumferential direction, and the cables 3 are passed through the plurality of through holes 6. This facilitates the classification and fixation of the cables 3. Figure 3 As shown, the cable protection layer 2 includes several cable protection units 7, each with an arc-shaped cross-section. Each cable protection unit 7 has a tenon structure at one end and a mortise structure at the other end, creating a mortise-and-tenon joint between the cable protection units 7 for easy disassembly. The cables 3 are embedded in the through-holes 6 of the cable protection layer 2. The cable protection layer 2 is made of a high-strength flexible material, and the inner lining layer 4 is made of an ductile and deformable material.

[0020] The working principle of the optical cable fixing device installed in the coiled tubing provided by the present invention is as follows: a plurality of dry cable protection units 7 are spliced into a cylindrical shape and sleeved on the outer wall of the inner lining layer 4 to form a cable protection layer 2; cables 3 are embedded in a plurality of through holes 6 of the cable protection layer 2 to form an internal cable layer; the internal cable layer is pulled into the inner cavity of the coiled tubing 1 through the plurality of cables 3; an expansion block 5 is pressed into the inner cavity of the coiled tubing 1 from one end of the coiled tubing 1 using a mechanical device; a pressurizing device is connected to the coiled tubing 1 with one end of the expansion block 5 inserted, and continuous pressure is applied to cause the expansion block 5 to move toward the other side of the coiled tubing 1, thereby expanding the inner lining layer 4, thereby making the cable protection layer 2 containing the cables 3 tightly adhere to the inner wall of the coiled tubing 1.

[0021] Example 1

[0022] The embodiment of the present invention provides a device for fixing optical cables in a coiled tubing. Figure 1 、 2 As shown, it includes an inner cable layer, which is arranged on the inner wall of the coiled tubing 1 , the inner wall of the inner cable layer is in contact with an inner lining layer 4 , and the inner wall of the inner lining layer 4 is in contact with an expansion block 5 .

[0023] Example 2

[0024] The embodiment of the present invention provides a device for fixing optical cables in a coiled tubing. Figure 1 、 2 As shown, it includes an internal cable layer, which is arranged on the inner wall of the coiled tubing 1, and the inner wall of the internal cable layer is in contact with the inner lining layer 4, and the inner wall of the inner lining layer 4 is in contact with the expansion block 5; the internal cable layer includes a cable protective layer 2, which is arranged on the inner wall of the coiled tubing 1, and the inner wall of the cable protective layer 2 is in contact with the inner lining layer 4. The cable protective layer 2 is provided with a plurality of through holes 6 along the circumferential direction, and the cables 3 are passed through the plurality of through holes 6.

[0025] Example 3

[0026] The optical cable fixing device installed in the coiled tubing proposed in this embodiment is as follows: Figure 1 、 2 As shown, it includes an internal cable layer, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the internal cable layer is in contact with the inner lining layer 4, and the inner wall of the inner lining layer 4 is in contact with the expansion block 5. The internal cable layer includes a cable protection layer 2, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the cable protection layer 2 is in contact with the inner lining layer 4. The cable protection layer 2 is provided with a plurality of through holes 6 along the circumferential direction, and the cables 3 are passed through the plurality of through holes 6. Figure 3 As shown, the cable protection layer 2 includes a plurality of cable protection units 7, and the cross-sections of the plurality of cable protection units 7 are all "arc-shaped".

[0027] Example 4

[0028] The optical cable fixing device installed in the coiled tubing proposed in this embodiment is as follows: Figure 1 、 2 As shown, it includes an internal cable layer, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the internal cable layer is in contact with the inner lining layer 4, and the inner wall of the inner lining layer 4 is in contact with the expansion block 5. The internal cable layer includes a cable protection layer 2, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the cable protection layer 2 is in contact with the inner lining layer 4. The cable protection layer 2 is provided with a plurality of through holes 6 along the circumferential direction, and the cables 3 are passed through the plurality of through holes 6. Figure 3 As shown, the cable protection layer 2 includes a plurality of cable protection units 7, each of which has an arc-shaped cross-section. Each of the cable protection units 7 has a tenon structure at one end and a mortise structure at the other end, forming a mortise-and-tenon joint between the head and tail of the cable protection units 7.

[0029] Example 5

[0030] The optical cable fixing device installed in the coiled tubing proposed in this embodiment is as follows: Figure 1 、 2 As shown, it includes an internal cable layer, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the internal cable layer is in contact with the inner lining layer 4, and the inner wall of the inner lining layer 4 is in contact with the expansion block 5. The internal cable layer includes a cable protection layer 2, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the cable protection layer 2 is in contact with the inner lining layer 4. The cable protection layer 2 is provided with a plurality of through holes 6 along the circumferential direction, and the cables 3 are passed through the plurality of through holes 6. Figure 3 As shown, the cable protection layer 2 includes several cable protection units 7, each of which has an arc-shaped cross-section. Each of the cable protection units 7 has a tenon structure at one end and a mortise structure at the other end, forming a mortise-and-tenon joint between the cable protection units 7. The cables 3 are embedded in the through holes 6 of the cable protection layer 2.

[0031] Example 6

[0032] The optical cable fixing device installed in the coiled tubing proposed in this embodiment is as follows: Figure 1 、 2 As shown, it includes an internal cable layer, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the internal cable layer is in contact with the inner lining layer 4, and the inner wall of the inner lining layer 4 is in contact with the expansion block 5. The internal cable layer includes a cable protection layer 2, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the cable protection layer 2 is in contact with the inner lining layer 4. The cable protection layer 2 is provided with a plurality of through holes 6 along the circumferential direction, and the cables 3 are passed through the plurality of through holes 6. Figure 3As shown, the cable protection layer 2 includes several cable protection units 7, each of which has an arc-shaped cross-section. Each of the cable protection units 7 has a tenon structure at one end and a mortise structure at the other end, forming a mortise-and-tenon joint between the cable protection units 7. The cables 3 are embedded in the through-holes 6 of the cable protection layer 2, which is made of a flexible material.

[0033] Example 7

[0034] The optical cable fixing device installed in the coiled tubing proposed in this embodiment is as follows: Figure 1 、 2 As shown, it includes an internal cable layer, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the internal cable layer is in contact with the inner lining layer 4, and the inner wall of the inner lining layer 4 is in contact with the expansion block 5. The internal cable layer includes a cable protection layer 2, which is arranged on the inner wall of the coiled tubing 1. The inner wall of the cable protection layer 2 is in contact with the inner lining layer 4. The cable protection layer 2 is provided with a plurality of through holes 6 along the circumferential direction, and the cables 3 are passed through the plurality of through holes 6. Figure 3 As shown, the cable protection layer 2 includes several cable protection units 7, each of which has an arc-shaped cross-section. Each of the cable protection units 7 has a tenon structure at one end and a mortise structure at the other end, forming a mortise-and-tenon joint between the cable protection units 7. The cables 3 are embedded in the through holes 6 of the cable protection layer 2. The cable protection layer 2 is made of a flexible material, and the inner lining layer 4 is made of an ductile and deformable material.

Claims

1. The optical cable fixing device installed in the coiled tubing is characterized by: It comprises an internal cable layer, which is arranged on the inner wall of a continuous oil pipe (1), the inner wall of the internal cable layer is in contact with an inner lining layer (4), and the inner wall of the inner lining layer (4) is in contact with an expansion block (5).

2. The optical cable fixing device installed in a coiled tubing according to claim 1, characterized in that: The inner cable layer comprises a cable protection layer (2), the cable protection layer (2) is arranged on the inner wall of the continuous oil pipe (1), the inner wall of the cable protection layer (2) contacts and connects to the inner lining layer (4), and a plurality of through holes (6) are opened on the cable protection layer (2) along the circumferential direction, and cables (3) are passed through the plurality of through holes (6).

3. The optical cable fixing device installed in a coiled tubing according to claim 2, characterized in that: The cable protection layer (2) comprises a plurality of cable protection units (7), and the cross sections of the plurality of cable protection units (7) are all in an arc shape.

4. The optical cable fixing device installed in a coiled tubing according to claim 2, characterized in that: One end of each of the plurality of cable protection units (7) is provided with a tenon structure, and the other end of each of the plurality of cable protection units (7) is provided with a mortise structure, and the head and tail of each of the plurality of cable protection units (7) are connected in a mortise and tenon manner.

5. The optical cable fixing device installed in a coiled tubing according to claim 2, characterized in that: The cable (3) is embedded in the through hole (6) of the cable protective layer (2).

6. The optical cable fixing device installed in a coiled tubing according to claim 2, characterized in that: The cable protective layer (2) is a protective layer made of flexible material.

7. The optical cable fixing device installed in coiled tubing according to claim 2, characterized in that: The inner lining layer (4) is a lining layer made of ductile and deformable material.

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