Novel coiled tubing straightener

Abstract

The utility model relates to the field of coiled tubing equipment in oil and gas production increase construction in the petroleum and natural gas industry, in particular to a novel coiled tubing straightener, which comprises a leading-in device, an annular hoop and a straightening device, the leading-in device sequentially comprises a connecting section with a through hole, a transition section and a first fixing section, the straightening device comprises a second fixing section which is the same as the first fixing section in structure, a straightening section is fixedly arranged below the second fixing section, the straightening section is hollow, an observation opening and an insertion opening are formed in the outer wall of the straightening section, and a straightener is arranged at the position opposite to the insertion opening. The straightener comprises a straightening roller and a straightening oil cylinder for driving the straightening roller, the straightening roller is inserted into the insertion opening to make contact with the oil pipe, and the first fixing section and the second fixing section are connected through the annular clamp. According to the utility model, the safety of replacing underground tools is greatly improved, and the operation time is shortened.

Description

Technical Field

[0001] The utility model relates to the field of continuous oil tubing equipment in oil and gas production increase construction in the petroleum and natural gas industry, in particular to a novel continuous oil tubing straightener. Background Art

[0002] Coiled tubing equipment is a versatile, highly efficient, and self-contained device that can be equipped with various downhole tools to meet a variety of downhole operation requirements. Therefore, improving the efficiency and safety of disassembly, assembly, and replacement of coiled tubing downhole tools has become a top priority. During coiled tubing operations, replacing downhole tools requires disconnecting the blowout preventer (BOP) cartridge or lubricant from the underlying BOP tool. The injection head is then operated to extend the coiled tubing to a certain length. However, the tubing naturally bends to a certain degree, requiring operators to use a pull rope or chain to straighten the tubing, which is somewhat dangerous. Utility Model Content

[0003] In view of the above problems, the present invention provides a novel coiled tubing straightener, which solves the problems in the background technology.

[0004] The technical solution adopted by the utility model to solve its technical problems is: a new type of continuous oil pipe straightener, used in conjunction with a blowout preventer box, comprising an introduction device, an annular clamp and a straightening device, the introduction device sequentially comprising a connecting section with a through hole, a transition section and a fixed section one, the straightening device comprising a fixed section two with the same structure as the fixed section one, a straightening section fixedly provided below the fixed section two, the straightening section is hollow inside and an observation port and an insertion port are provided on the outer wall, a straightener is provided at a position opposite to the insertion port, the straightener comprises a straightening roller and a straightening cylinder driving the straightening roller, the straightening roller contacts the oil pipe by being inserted into the insertion port, and the annular clamp connects the fixed section one and the fixed section two.

[0005] As an optimization, a plurality of rollers are provided on the circumference of the inner wall of the transition section.

[0006] As an optimization, the outer wall of the connecting section is provided with an external thread connected to the blowout preventer box.

[0007] As an optimization, the observation port and the insertion port are arranged adjacent to each other.

[0008] As an optimization, a connecting frame is provided between the straightening roller and the straightening cylinder, and the width of the connecting frame is smaller than the width of the insertion port.

[0009] As an optimization, a roller box is provided on the outside of the straightening roller, and a cylinder box is provided on the outside of the straightening cylinder.

[0010] The beneficial effects of the present invention are as follows: the present invention provides a new type of continuous tubing straightener, which can be directly connected to the blowout preventer box. When the tubing is extended, it can be introduced into the straightening device through the straightener introduction device. The straightening device can be freely rotated to align the straightening cylinder with the bending direction of the tubing and then tighten the annular clamp. By controlling the extension and contraction of the straightening cylinder, the tubing can be pushed from the bent state to a state where downhole tools can be easily installed. Since the overall structure of the device is a split design, the downhole tools can be directly removed after installation. The weight of a single component is about ten kilograms, the structure is simple, and one person can disassemble and assemble it, making the disassembly and assembly of downhole tools safer and more convenient. By testing the machine, it can meet the requirements of straightening the extended part of the continuous tubing when replacing downhole tools, and one person can operate when installing components. The tubing is introduced smoothly. Rollers are installed on both the introduction device and the straightening device to reduce the wear of the tubing, greatly improving the safety when replacing downhole tools and reducing operation time. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Fig. 1 This is a schematic diagram of the structure of the utility model in the installed state;

[0012] Fig. 2 It is a structural diagram of the working state of the utility model.

[0013] Among them: 1. Introduction device, 2. Ring clamp, 3. Straightening device, 4. Through hole, 5. Connecting section, 6. Transition section, 7. Fixed section 1, 8. Fixed section 2, 9. Straightening section, 10. Observation port, 11. Insertion port, 12. Straightener, 13. Straightening roller, 14. Straightening cylinder. DETAILED DESCRIPTION

[0014] It should be noted that the following detailed descriptions are illustrative and intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present application belongs.

[0015] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0016] For the convenience of description, if the words "up", "down", "left" and "right" appear in this utility model, they only indicate that they are consistent with the up, down, left and right directions of the drawings themselves, and do not limit the structure. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, they should not be understood as limiting the present utility model.

[0017] like Figs. 1-2 As shown, a new type of coiled tubing straightener is used in conjunction with a blowout preventer, including an introduction device 1, an annular clamp 2 and a straightening device 3. The introduction device 1 includes a connecting section 5 with a through hole 4, a transition section 6 and a fixed section 1 7 in sequence. The straightening device 3 includes a fixed section 2 8 with the same structure as the fixed section 1 7. A straightening section 9 is fixed below the fixed section 2 8. The straightening section 9 is hollow inside and has an observation port 10 and an insertion port 11 on its outer wall. The observation port 10 and the insertion port 11 are adjacently arranged, and a straightener 12 is provided at a position opposite to the insertion port 11. The device 12 includes a straightening roller 13 and a straightening cylinder 14 that drives the straightening roller 13. A connecting frame is provided between the straightening roller 13 and the straightening cylinder 14. The width of the connecting frame is smaller than the width of the insertion port 11. The straightening roller 13 contacts the oil pipe by being inserted into the insertion port 11. A roller box is provided on the outside of the straightening roller 13. A cylinder box is provided on the outside of the straightening cylinder 14. The annular clamp 2 connects the fixed section 1 7 and the fixed section 2 8. A plurality of rollers are provided on the circumference of the inner wall of the transition section 6. The outer wall of the connecting section 5 is provided with an external thread connected to the blowout preventer box.

[0018] The novel coiled tubing straightener 12 can be directly connected to the blowout preventer box. When the tubing is extended, it can be introduced into the straightening device 3 by the introduction device 1. The straightening device 3 can be freely rotated to align the straightening cylinder 14 with the bending direction of the tubing and then tighten the annular clamp 2. By controlling the extension and contraction of the straightening cylinder 14, the tubing can be pushed from the bent state to a state where downhole tools can be easily installed. Since the overall structure of the straightener 12 is a split design, the downhole tools can be directly removed after installation. A single component weighs about ten kilograms and has a simple structure. It can be disassembled and assembled by one person, making the disassembly and assembly of downhole tools safer and more convenient.

[0019] During installation, the operator first assembles the split introduction device 1 and screws it into the blowout preventer box union, then assembles the split straightening device 3 with bolts and docks it with the introduction device 1, connects it with the annular clamp 2 without tightening it, and extends the oil pipe of the removed downhole tool through the introduction device 1 and into the straightening device 3 through the action of the injection head. After rotating the straightening device 3 according to the bending direction of the oil pipe, the straightening roller 13 and the straightening cylinder 14 are in the appropriate position, and then tighten the annular clamp 2, connect the hydraulic pipeline of the straightening cylinder 14 and operate the straightening cylinder 14 to straighten the coiled tubing before installing the downhole tool. After installation, the straightener 12 components are removed in the order of the annular clamp 2, the straightening device 3, and the introduction device 1. The straightener 12 solves the problem of difficulty in replacing downhole tools caused by the bending of the coiled tubing during operation. Personnel can replace the downhole tool without using a pull rope / chain to forcibly straighten the tubing, thereby improving safety.

[0020] The above-mentioned specific implementation methods are only specific cases of the present utility model. The scope of patent protection of the present utility model includes but is not limited to the product form and style of the above-mentioned specific implementation methods. Any appropriate changes or modifications made to them by ordinary technicians in the relevant technical field that comply with the claims of the present utility model shall fall within the scope of patent protection of the present utility model.

Claims

1. A new type of coiled tubing straightener, used in conjunction with a blowout preventer, characterized by: It includes an introduction device, an annular clamp and a straightening device. The introduction device includes a connecting section with a through hole, a transition section and a fixed section one in sequence. The straightening device includes a fixed section two with the same structure as the fixed section one. A straightening section is fixedly provided under the fixed section two. The straightening section is hollow inside and an observation port and an insertion port are provided on the outer wall. A straightener is provided at a position opposite to the insertion port. The straightener includes a straightening roller and a straightening oil cylinder driving the straightening roller. The straightening roller contacts the oil pipe by being inserted into the insertion port. The annular clamp connects the fixed section one and the fixed section two.

2. The novel coiled tubing straightener according to claim 1 is characterized in that: A plurality of rollers are provided on the circumference of the inner wall of the transition section.

3. The novel coiled tubing straightener according to claim 1 is characterized in that: A connecting frame is provided between the straightening roller and the straightening cylinder, and the width of the connecting frame is smaller than the width of the insertion port.

4. The novel coiled tubing straightener according to claim 1 is characterized in that: The outer wall of the connecting section is provided with an external thread connected to the blowout preventer box.

5. The novel coiled tubing straightener according to claim 1 is characterized in that: The observation port and the insertion port are arranged adjacent to each other.

6. The novel coiled tubing straightener according to claim 3 is characterized by: A roller box is provided on the outside of the straightening roller, and an oil cylinder box is provided on the outside of the straightening oil cylinder.

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