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Cable injection recovery system

A recovery system and cable technology, which is applied in the field of cable injection and recovery systems, can solve the problems of cable injection, consumption, and inconvenience in actual operation, and achieve the effects of reduced frictional resistance, convenient operation, and simple structure

Active Publication Date: 2016-06-01
SICHUAN HONGHUA PETROLEUM EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the prior art, in order to pass the cable into the coiled tubing, the following two methods are often used to inject the cable from the cable drum into the coiled tubing, or to retract the cable from the coiled tubing on the drum to the cable drum : One is to fully release the coiled tubing from the reel, extend it into a well drilled vertical well, and then use gravity to insert the cable into the coiled tubing; the other is to flatten the coiled tubing on the ground to form a very For long straight pipes, the cable is inserted into the continuous pipe by using the crawling mechanism or the principle of the hydraulic cylinder piston rod. The disadvantage of the above two methods is that the continuous pipe must be released from the reel to form a straight After the tube, use the crawling mechanism or piston-like mechanism to inject the cable, and the cable cannot be injected directly into the continuous tube wound on the reel. It is precisely because of this limitation that the actual operation is very inconvenient and requires a lot of manpower and material resources. , and also affects the life of coiled tubing

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] like Figure 1 to Figure 7 As shown, a cable injection recovery system in this embodiment includes a cable reel 1 and a coiled tubing reel 2, the drive shaft of the cable reel 1 is connected with a cable 3 winch, the cable reel 1 is provided with a cable 3, and the coiled tubing A continuous pipe 4 is coiled on the reel 2, and an injection device 5 is arranged between the cable reel 1 and the continuous pipe reel 2. The injection device 5 is tubular, and an injection chamber is arranged inside the injection device 5, and the injection chamber is provided with a connection to the External cable outlet 6, cable inlet 7 and fluid inlet 8; the cable outlet 6 and the cable inlet 7 are arranged at both ends of the injection device 5, and the fluid inlet 8 is arranged on the side wall of the injection device 5, and its The opening on the inner side of the injection device 5 faces the cable outlet 6, and the cable outlet 6 is provided with a connector 9. In this embodiment, the...

Embodiment 2

[0034] Such as Figure 1 to Figure 7 As shown, in this embodiment, the pumping device includes a drilling pump 11, the water inlet end of the drilling pump 11 is provided with a suction manifold 12, and the suction manifold 12 connects the water inlet end of the drilling pump 11 with the water storage tank 13, An injection manifold 14 is arranged between the outlet end of the drilling pump 11 and the third branch pipe 10c of the three-way valve 10, and a return manifold 15 is arranged between the end of the continuous pipe 4 and the water storage tank 13, through which the suction manifold 12, The injection manifold 14 and the return manifold 15 form a circulation channel for water storage and water injection, which is beneficial to avoid fluid waste and has the beneficial effect of energy saving and environmental protection.

[0035] Please refer to Embodiment 1 for other structures.

Embodiment 3

[0037] Such as Figure 1 to Figure 7 As shown, in this embodiment, although most of the fluid returns to the water storage tank 13 along the circulation channel formed by the continuous pipe 4, in order to avoid the high-pressure recoil of the high-pressure liquid at the cable injection port 7, the injection chamber is close to the cable injection port. One side of 7 is provided with an overflow manifold 16, which connects the injection chamber and the water storage tank 13, so that the fluid recoiled to the cable injection port 7 can return to the water storage tank 13 along the overflow manifold 16.

[0038] In order to further ensure the connection strength of the cable injection port 7, between the overflow pipe 28 and the cable injection port 7, the sealing tube 27 is connected. The overflow pipe 28 is threaded, so that the annular sealing ring in the sealing pipe 27 deforms and compresses the outer surface of the cable 3 to seal the fluid.

[0039] In order to further p...

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PUM

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Abstract

The invention discloses a cable injection recovery system, comprising a cable drum and a coiled tube drum, the cable drum is provided with a cable, and the coiled tube drum is coiled with a coiled tube, characterized in that: An injection device is provided between the cable reel and the coiled tubing reel, and an injection cavity is provided inside the injection device, and the injection cavity is provided with a cable outlet, a cable injection port and a fluid inlet connected to the outside; the cable guide The outlet is provided with a connector, and the butt end of the coiled tubing communicates with the injection cavity through the connector; the above-mentioned cable injection and recovery system can realize the injection and recovery of the cable without releasing and flattening the coiled tubing from the coiled tubing reel. Recycling, and the pressure loss tube and overflow tube are used in the injection device, so that the friction resistance between the sealing ring in the sealing tube and the surface of the cable is greatly reduced, so that the feeding and pulling of the cable can be realized with a small feeding and pulling force Out, simple structure, convenient operation.

Description

technical field [0001] The invention relates to the field of oil drilling and production equipment, in particular to a cable injection recovery system in which a coiled tubing can be injected into a cable without flattening. Background technique [0002] With the continuous development of coiled tubing related technologies, coiled tubing and related equipment have been increasingly used in drilling and logging of horizontal wells and directional wells. Since coiled tubing is a continuous section of thin-walled circular tube, compared with conventional Rod, in the process of operation, does not need to be connected with joints, and constitutes a continuous channel connecting ground equipment and downhole tools. Therefore, through the penetration of cables in coiled tubing to build downhole power and signal channels, the electrical drilling and logging work is more efficient than in Electric drilling and logging under conventional drill pipe has higher feasibility and better a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H02G1/08
CPCH02G1/086
Inventor 姚宇翔单代伟夏宏克胡晓君钟萍萍张波
Owner SICHUAN HONGHUA PETROLEUM EQUIP