Flexible underground working barrel

Abstract

The invention discloses a flexible underground working barrel. Comprising a pipe body made of a flexible material, an expanded cylindrical part is arranged at the lower end of the pipe body, and a steel wire is wound outside the pipe body; the circuit board mounting cylinder is arranged in the cylindrical part; the temperature sensor and the vibration sensor are respectively arranged in the cylindrical part, are arranged below the circuit board mounting cylinder and are electrically connected with the circuit board mounting cylinder; the hydraulic pipeline and the conductive copper core are arranged in the pipe body in parallel in the axial direction of the pipe body, the lower end of the hydraulic pipeline and the lower end of the conductive copper core are electrically connected with the circuit board mounting cylinder, and the upper end of the hydraulic pipeline and the upper end of the conductive copper core are electrically connected with wellhead equipment. The beneficial effects of the invention are that the tube body is made of the flexible material, and the steel wire is wound outside the tube body, so that the damage of internal components caused by violent impact can be avoided. The hydraulic pipeline and the conductive copper core are arranged in the pipe body in parallel, and abrasion can be prevented.

Description

Technical Field

[0001] The invention relates to the technical field of offshore oil fields, and in particular to a flexible downhole working cylinder. Background Art

[0002] The underground mandrel is generally a rigid structure, and the equipment is heavy. When it is lowered, the equipment is sometimes hit violently due to poor well conditions, causing damage to internal components. At the same time, the conventional underground mandrel needs to be connected to a wire rope for operation, and the hydraulic pipelines and electrical pipelines are separately connected in series. The hydraulic pipelines and electrical pipelines are prone to wear when they are lowered. The conventional underground mandrel also does not have a warning before falling into the well. The above are all disadvantages of the conventional underground mandrel and its operation. Summary of the invention

[0003] The object of the present invention is to provide a flexible downhole working tube, the tube body of which is made of flexible material and steel wires are wound around the outside of the tube body, so as to avoid violent impacts that may cause damage to internal components.

[0004] Another object of the present invention is to provide a flexible downhole working tube, wherein the hydraulic pipeline and the conductive copper core are arranged in parallel in the tube body to prevent wear.

[0005] To achieve the above object, the present invention adopts the following technical solutions, including:

[0006] The tube body is made of a flexible material, an enlarged cylindrical portion is provided at the lower end of the tube body, and a steel wire is wound around the outside of the tube body;

[0007] a circuit board mounting cylinder disposed in the cylindrical portion; and

[0008] a temperature sensor and a vibration sensor, which are respectively arranged in the cylindrical portion and are located below the circuit board mounting cylinder and are electrically connected to the circuit board mounting cylinder;

[0009] The hydraulic pipeline and the conductive copper core are arranged in parallel in the tube body along the axial direction of the tube body, the lower ends of the hydraulic pipeline and the conductive copper core are electrically connected to the circuit board mounting tube, and the upper ends of the hydraulic pipeline and the conductive copper core are electrically connected to the wellhead equipment.

[0010] Preferably, the lower ends of the hydraulic pipeline and the conductive copper core are electrically connected to the circuit board mounting cylinder via a hydraulic-electrical connector.

[0011] Preferably, a zipper is provided on the tube wall of the tubular portion.

[0012] Preferably, the tube body is made of fluororubber.

[0013] Preferably, a longitudinal first pressure plate is provided on the upper periphery of the tube body, and a horizontal second pressure plate is provided on the top periphery of the tube body. The upper part of the tube body is bent downward, and one end of the first pressure plate is connected to the upper end of the second pressure plate for fixing the tube body at the wellhead.

[0014] Preferably, a support angle is provided between the first pressing plate and the second pressing plate.

[0015] Preferably, the first pressure plate is composed of a pair of first clamping blocks that are relatively buckled, a first tube body accommodating groove is provided on the inner surface of the first clamping block, and the pair of first clamping blocks are connected by bolts; the second pressure plate is composed of a pair of second clamping blocks that are relatively buckled, a second tube body accommodating groove is provided on the inner surface of the second clamping block, and the pair of second clamping blocks are connected by bolts.

[0016] Preferably, a plurality of convex strips for increasing friction are provided in the first tube accommodating groove and the second tube accommodating groove.

[0017] Preferably, a buffer pad for preventing the tube from being damaged is provided in the first tube accommodating groove and the second tube accommodating groove respectively.

[0018] The beneficial effects of the present invention are as follows: the tube body is made of a flexible material, and a steel wire is wound around the outside of the tube body, which can prevent violent impacts and damage to internal components. The hydraulic pipeline and the conductive copper core are arranged side by side in the tube body to prevent wear. A first pressure plate and a second pressure plate are provided to fix the tube body at the wellhead. The tube body between the first pressure plate and the second pressure plate serves as a safety warning rope. When the safety warning rope is deformed, it indicates that the equipment is at risk of falling into the well, and personnel should evacuate as soon as possible. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of a flexible downhole working cylinder of the present invention.

[0020] Figure 2 It is a cross-sectional view of the cylindrical portion in the present invention.

[0021] Figure 3 It is a schematic diagram of the first clamping block in the present invention.

[0022] Figure 4 It is a schematic diagram of the second clamping block in the present invention. DETAILED DESCRIPTION

[0023] The invention is further described in detail below in conjunction with the accompanying drawings so that those skilled in the art can implement it according to the description.

[0024] It should be understood that terms such as “having”, “including” and “comprising” used herein do not exclude the existence or addition of one or other elements or combinations thereof.

[0025] like Figure 1-4 As shown, a flexible downhole working barrel 1 of the present invention comprises:

[0026] The pipe body 110 is made of a flexible material, and an enlarged cylindrical portion 111 is provided at the lower end of the pipe body 110, and a steel wire 112 is wound around the outside of the pipe body 110. As a preferred embodiment, a zipper 113 is provided on the wall of the cylindrical portion 111. As a further preferred embodiment, a longitudinal first pressing plate 170 is provided on the outer periphery of the upper portion of the pipe body 110, and a horizontal second pressing plate 180 is provided on the outer periphery of the top end of the pipe body 110. The upper portion of the pipe body 110 is bent downward, and one end of the first pressing plate 170 is connected to the upper end of the second pressing plate 180, so as to fix the pipe body 110 at the wellhead.

[0027] The circuit board mounting cylinder 120 is disposed in the cylindrical portion 111 .

[0028] The temperature sensor 130 and the vibration sensor 140 are respectively arranged in the cylindrical portion 111, and are located below the circuit board mounting cylinder 120 and are electrically connected to the circuit board mounting cylinder 120. As a preferred embodiment, the lower ends of the hydraulic pipeline 150 and the conductive copper core 160 are electrically connected to the circuit board mounting cylinder 120 through a hydraulic-electrical connector 121.

[0029] The hydraulic pipeline 150 and the conductive copper core 160 are arranged in parallel along the axial direction of the tube body 110 in the tube body 110, and the lower ends of the hydraulic pipeline 150 and the conductive copper core 160 are electrically connected to the circuit board mounting tube 120, and the upper ends of the hydraulic pipeline 150 and the conductive copper core 160 are electrically connected to the wellhead equipment.

[0030] During use, the upper end of the tube body 110 is fixed to the wellhead by the first pressing plate 170 and the second pressing plate 180. The hydraulic pipeline 150 and the conductive copper core 160 are lowered into the flexible working cylinder 1 at the same time, and there is no need to connect the hydraulic pipeline and the electrical pipeline separately in series, so as to avoid the problem of easy wear of the hydraulic pipeline and the electrical pipeline when they are lowered. The circuit board installation cylinder 120 is electrically connected to the temperature sensor 130 and the vibration sensor 140 below; the zipper 113 is placed on the cylindrical part 111, and the temperature sensor 130, the vibration sensor 140 and the circuit board installation cylinder 120 can be installed by opening the zipper 113, and the downhole vibration working condition and downhole temperature can be monitored at the same time; the tube body 110 between the first pressing plate 170 and the second pressing plate 180 is used as a safety warning rope 114. When the safety warning rope 114 is deformed, it indicates that the equipment is at risk of falling into the well and the personnel should evacuate as soon as possible.

[0031] In another embodiment, the lower ends of the hydraulic pipeline 150 and the conductive copper core 160 are electrically connected to the circuit board mounting cylinder 120 via a hydraulic-electrical connector 121 .

[0032] In another embodiment, a zipper 113 is provided on the wall of the cylindrical portion 111 .

[0033] In another embodiment, the tube body 110 is made of fluororubber. The cylindrical portion 111 at the lower end of the tube body 110 is spindle-shaped, and the tube body 110 is in the shape of a thin tube. The manufacturing process is that after the fluororubber tube body is formed, the surface of the tube body 110 is heated, and the outer layer of steel wire 112 is evenly and tightly wound on the tube body 110 when the surface of the tube body 110 is molten. After the surface of the tube body 110 is cooled, the tube body 110 and the steel wire 112 are tightly infiltrated and bonded. When the flexible downhole mandrel 1 is underground, the outer layer of steel wire 112 is mainly stressed and withstands the scratches of the tube wall, ensuring that the overall flexibility is certain, while the internal tube body 110, temperature sensor 130 and vibration sensor 140 are not affected.

[0034] In another embodiment, a longitudinal first pressure plate 170 is provided on the upper periphery of the tube body 110, and a horizontal second pressure plate 180 is provided on the top periphery of the tube body 110. The upper portion of the tube body 110 is bent downward, and one end of the first pressure plate 170 is connected to the upper end of the second pressure plate 180 for fixing the tube body 110 at the wellhead.

[0035] In another embodiment, a support angle 190 is provided between the first pressing plate 170 and the second pressing plate 180 .

[0036] In another embodiment, the first pressure plate 170 is composed of a pair of first clamping blocks 171 that are relatively buckled, a first tube body accommodating groove 172 is provided on the inner surface of the first clamping block, and the pair of first clamping blocks are connected by bolts 173; the second pressure plate 180 is composed of a pair of second clamping blocks 181 that are relatively buckled, a second tube body accommodating groove 182 is provided on the inner surface of the second clamping block, and the pair of second clamping blocks are connected by bolts 183.

[0037] In another embodiment, a plurality of convex strips 174 and 184 for increasing friction are provided in the first tube receiving groove 172 and the second tube receiving groove 182 .

[0038] In another embodiment, a buffer pad is disposed in the first tube receiving groove 172 and the second tube receiving groove 182 respectively to prevent the tube from being damaged.

[0039] In summary, the present invention provides a flexible downhole working tube 1, wherein the tube body 110 is made of a flexible material, and a steel wire 112 is wound around the outside of the tube body 110 to avoid violent impacts that may damage internal components. The hydraulic pipeline 150 and the conductive copper core 160 are arranged side by side in the tube body 110 to prevent wear. A first pressure plate 170 and a second pressure plate 180 are provided to fix the tube body 110 at the wellhead. The tube body 110 between the first pressure plate 170 and the second pressure plate 180 serves as a safety warning rope 114. When the safety warning rope 114 is deformed, it indicates that the equipment is at risk of falling into the well and that personnel should evacuate as soon as possible.

[0040] Although the embodiments of the present invention have been disclosed as above, they are not limited to the applications listed in the specification and the implementation modes, and they can be fully applied to various fields suitable for the present invention. For those familiar with the art, additional modifications can be easily implemented. Therefore, without departing from the general concept defined by the claims and the scope of equivalents, the present invention is not limited to the specific details and the illustrations shown and described herein.

Claims

1. A flexible downhole mandrel, It is characterized in that include: The tube body is made of a flexible material, an enlarged cylindrical portion is provided at the lower end of the tube body, and a steel wire is wound around the outside of the tube body; a circuit board mounting cylinder disposed in the cylindrical portion; and a temperature sensor and a vibration sensor, which are respectively arranged in the cylindrical portion and are located below the circuit board mounting cylinder and are electrically connected to the circuit board mounting cylinder; The hydraulic pipeline and the conductive copper core are arranged in parallel in the tube body along the axial direction of the tube body, the lower ends of the hydraulic pipeline and the conductive copper core are electrically connected to the circuit board mounting tube, and the upper ends of the hydraulic pipeline and the conductive copper core are electrically connected to the wellhead equipment.

2. The flexible downhole mandrel according to claim 1, Features: The lower ends of the hydraulic pipeline and the conductive copper core are electrically connected to the circuit board mounting cylinder via a hydraulic-electrical joint.

3. The flexible downhole mandrel according to claim 1 or 2, Features: A zipper is provided on the tube wall of the tubular portion.

4. The flexible downhole mandrel according to claim 1 or 2, Features: The tube body is made of fluororubber.

5. The flexible downhole mandrel according to claim 1 or 2, Features: A first longitudinal pressure plate is provided on the upper periphery of the tube body, and a second horizontal pressure plate is provided on the top periphery of the tube body. The upper part of the tube body is bent downward, and one end of the first pressure plate is connected to the upper end of the second pressure plate for fixing the tube body at the wellhead.

6. The flexible downhole mandrel according to claim 1 or 2, Features: A support angle is provided between the first pressing plate and the second pressing plate.

7. The flexible downhole mandrel according to claim 1 or 2, Features: The first pressure plate is composed of a pair of first clamping blocks that are relatively buckled, a first tube body accommodating groove is provided on the inner surface of the first clamping block, and the pair of first clamping blocks are connected by bolts; the second pressure plate is composed of a pair of second clamping blocks that are relatively buckled, a second tube body accommodating groove is provided on the inner surface of the second clamping block, and the pair of second clamping blocks are connected by bolts.

8. The flexible downhole working barrel according to claim 7, Features: A plurality of convex strips for increasing friction are arranged in the first tube accommodating groove and the second tube accommodating groove.

9. The flexible downhole mandrel according to claim 7, Features: Buffer pads for preventing the tube from being damaged are respectively arranged in the first tube accommodating groove and the second tube accommodating groove.

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