CN218954356U

CN218954356U - Pre-bent coiled tubing

Info

Publication number: CN218954356U
Application number: CN202320146121.1U
Authority: CN
Inventors: 李禹辰; 由春梅
Original assignee: Daqing Chenping Drilling Technology Service Co ltd
Current assignee: Daqing Chenping Drilling Technology Service Co ltd
Priority date: 2023-01-28
Filing date: 2023-01-28
Publication date: 2023-05-02
Anticipated expiration: 2033-01-28

Abstract

The utility model relates to the technical field of pipes, in particular to a pre-bent coiled tubing, which comprises an inner coiled tubing layer and an outer coiled tubing layer, wherein an inner wall protection layer is arranged on the inner wall of the inner coiled tubing layer, and a middle reinforcing layer is fixedly sleeved on the inner coiled tubing layer. According to the utility model, the inner wall of the inner layer of the continuous oil pipe is provided with the inner wall protection layer, the inner layer of the continuous oil pipe and the inner wall protection layer are made of corrosion-resistant elastic materials, the corrosion-resistant elastic materials are special-shaped polyurethane, the condition that the continuous oil pipe is corroded and leaked after being used for a period of time is prevented, the safety of the pre-bent continuous oil pipe is ensured, the middle reinforcing layer is provided with the reinforcing support layer, the reinforcing support layer is woven by steel wires, the connection strength between the inner layer of the continuous oil pipe and the outer layer of the continuous oil pipe is increased, the condition that the continuous oil pipe is broken due to excessive bending is prevented, and the stability of the continuous oil pipe is ensured.

Description

Pre-bent coiled tubing

Technical Field

The utility model relates to the technical field of pipes, in particular to a pre-bent coiled tubing.

Background

Coiled tubing (coileedtubing) is a tubing made of low carbon alloy steel, and has good flexibility, also called coiled tubing, and a roll of coiled tubing is several kilometers long. The continuous oil pipe operation equipment has the characteristics of pressurized operation and continuous lifting, and is small in size, quick in operation period and low in cost. Coiled tubing originated from "PLUTO" from allied forces during the second world war of the twentieth century 40.

When the pre-bent coiled tubing is transported, the pre-bent coiled tubing needs to be curled to a certain extent, and after the pre-bent coiled tubing is curled for a plurality of times, leakage or fracture of the pre-bent coiled tubing is easily caused, so that the pre-bent coiled tubing is proposed.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides a pre-bent coiled tubing.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a pre-bending coiled tubing, includes coiled tubing inlayer and coiled tubing skin, the inner wall of coiled tubing inlayer is provided with the inner wall inoxidizing coating, fixed middle part reinforcement layer of cup jointing on the coiled tubing inlayer, middle part reinforcement layer is in between coiled tubing inlayer and the coiled tubing skin, fixed coiled tubing skin reinforcement layer of cup jointing on the coiled tubing skin, fixed coiled tubing skin inoxidizing coating of cup jointing on the coiled tubing skin reinforcement layer.

As a preferred technical scheme of the utility model, the inner layer and the inner wall protection layer of the continuous oil pipe are made of corrosion-resistant elastic materials.

As a preferable technical scheme of the utility model, the corrosion-resistant elastic material is special-shaped polyurethane.

As a preferable technical scheme of the utility model, a reinforcing support layer is arranged in the middle reinforcing layer, and the reinforcing support layer is woven by steel wires.

As a preferable technical scheme of the utility model, the outer reinforcing layer of the continuous oil pipe is made of rubber materials.

As a preferable technical scheme of the utility model, the continuous oil pipe outer protective layer is made of wear-resistant materials.

Compared with the prior art, the utility model has the following beneficial effects:

1. the inner wall through coiled tubing inlayer is provided with the inner wall inoxidizing coating, coiled tubing inlayer and inner wall inoxidizing coating are made by corrosion-resistant elastic material, corrosion-resistant elastic material is abnormal shape polyurethane, prevent that coiled tubing from taking place the condition that the corruption leaked after long-term use, guaranteed this preflex coiled tubing's security, be provided with the reinforcement supporting layer through middle part reinforcement in situ, the reinforcement supporting layer is woven by the steel wire, increased with the joint strength between coiled tubing inlayer and the coiled tubing skin, prevent because coiled tubing excessively crooked lead to cracked condition, guaranteed this coiled tubing's stability.

2. The outer reinforcing layer of the continuous oil pipe is fixedly sleeved on the outer layer of the continuous oil pipe, the outer reinforcing layer of the continuous oil pipe is fixedly sleeved on the outer reinforcing layer of the continuous oil pipe, the outer reinforcing layer of the continuous oil pipe is made of rubber materials, the continuous oil pipe is further protected, the outer reinforcing layer of the continuous oil pipe is made of wear-resistant materials, the wear resistance of the continuous oil pipe is improved, the continuous oil pipe is more durable, and the service life is prolonged.

Drawings

FIG. 1 is a schematic view of the structure of a pre-bent coiled tubing of the present utility model;

FIG. 2 is a schematic view of the structure of the outer reinforcing layer of the coiled tubing of the present utility model;

FIG. 3 is a schematic view of the structure of the middle reinforcing layer of the present utility model;

FIG. 4 is a schematic view of the structure of the inner wall protection layer of the present utility model.

Wherein: 1. an inner layer of coiled tubing; 2. an outer layer of coiled tubing; 3. an inner wall protective layer; 4. a coiled tubing outer reinforcing layer; 5. an outer protective layer of the continuous oil pipe; 6. and a middle reinforcing layer.

Detailed Description

In order that the manner in which the above recited features, objects and advantages of the present utility model are obtained will become readily apparent, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Based on the examples in the embodiments, those skilled in the art can obtain other examples without making any inventive effort, which fall within the scope of the utility model. The experimental methods in the following examples are conventional methods unless otherwise specified, and materials, reagents, etc. used in the following examples are commercially available unless otherwise specified.

As shown in fig. 1, 2, 3 and 4, a pre-bent coiled tubing comprises an inner coiled tubing layer 1 and an outer coiled tubing layer 2, wherein an inner wall of the inner coiled tubing layer 1 is provided with an inner wall protection layer 3, a middle reinforcing layer 6 is fixedly sleeved on the inner coiled tubing layer 1, the middle reinforcing layer 6 is positioned between the inner coiled tubing layer 1 and the outer coiled tubing layer 2, an outer coiled tubing layer reinforcing layer 4 is fixedly sleeved on the outer coiled tubing layer 2, an outer coiled tubing layer protection layer 5 is fixedly sleeved on the outer coiled tubing layer reinforcing layer 4, the inner coiled tubing layer 1 and the inner wall protection layer 3 are made of corrosion-resistant elastic materials, the inner wall protection layer 3 is arranged on the inner wall of the inner coiled tubing layer 1, the inner coiled tubing layer 1 and the inner wall protection layer 3 are made of corrosion-resistant elastic materials, the corrosion-resistant elastic materials are special-shaped polyurethane, after the coiled tubing is used for a long time, the condition of corrosion leakage is ensured, the safety of the pre-bent coiled tubing is ensured, the reinforcing support layer is arranged in the middle reinforcing layer 6 and is woven by steel wires, the connection strength between the inner layer 1 of the coiled tubing and the outer layer 2 of the coiled tubing is increased, the condition of fracture caused by excessive bending of the coiled tubing is prevented, the stability of the coiled tubing is ensured, the outer reinforcing layer 4 of the coiled tubing is fixedly sleeved on the outer layer 2 of the coiled tubing, the outer reinforcing layer 5 of the coiled tubing is fixedly sleeved on the outer reinforcing layer 4 of the coiled tubing, the outer reinforcing layer 4 of the coiled tubing is made of rubber materials, the coiled tubing is further protected, the wear resistance of the coiled tubing is increased, the coiled tubing is more durable and the service life is prolonged, the corrosion-resistant elastic material is special polyurethane, a reinforcing support layer is arranged in the middle reinforcing layer 6, the reinforcing support layer is woven by steel wires, the outer reinforcing layer 4 of the continuous oil pipe is made of rubber materials, and the outer protective layer 5 of the continuous oil pipe is made of wear-resistant materials.

During the use, be provided with inner wall inoxidizing coating 3 through the inner wall of coiled tubing inlayer 1, coiled tubing inlayer 1 and inner wall inoxidizing coating 3 are made by corrosion-resistant elastic material, corrosion-resistant elastic material is abnormal polyurethane, prevent that coiled tubing from taking place the condition of corroding and leaking after long-term use, this preflex coiled tubing's security has been guaranteed, be provided with the reinforcement supporting layer in through middle part reinforcement layer 6, the reinforcement supporting layer is woven by the steel wire, the joint strength with coiled tubing inlayer 1 and coiled tubing skin 2 has been increased, prevent because coiled tubing excessively crooked leads to the cracked condition, the stability of this coiled tubing has been guaranteed, through fixed the cup joint of coiled tubing skin reinforcement layer 4 on the coiled tubing skin 2, coiled tubing skin reinforcement layer 5 has been fixedly cup jointed on the coiled tubing skin reinforcement layer 4, coiled tubing skin reinforcement layer 4 is made by rubber material, play further safeguard effect to this coiled tubing, through coiled tubing skin 5 is made by wear-resistant material, the wearability of this coiled tubing has been increased, it is more durable, and life has been prolonged.

The embodiments of the present utility model have been described in detail with reference to the drawings, but the present utility model is not limited thereto, and various changes can be made within the knowledge of those skilled in the art without departing from the spirit of the present utility model.

Claims

1. The utility model provides a pre-bending coiled tubing, includes coiled tubing inlayer (1) and coiled tubing skin (2), its characterized in that, the inner wall of coiled tubing inlayer (1) is provided with inner wall inoxidizing coating (3), fixed middle part reinforcement layer (6) of cup jointing on the coiled tubing inlayer (1), middle part reinforcement layer (6) are in between coiled tubing inlayer (1) and the coiled tubing skin (2), fixed coiled tubing skin reinforcement layer (4) of cup jointing on the coiled tubing skin (2), fixed coiled tubing skin inoxidizing coating (5) of cup jointing on the coiled tubing skin reinforcement layer (4).

2. A pre-bent coiled tubing according to claim 1, characterized in that the inner layer (1) and the inner wall protection layer (3) of the coiled tubing are made of a corrosion resistant elastic material.

3. A pre-bent coiled tubing according to claim 2, wherein the resilient material is a profiled polyurethane.

4. A pre-bent coiled tubing according to claim 1, characterized in that a reinforcing support layer is provided in the central reinforcing layer (6), said reinforcing support layer being braided from steel wires.

5. A pre-bent coiled tubing according to claim 1, characterized in that the outer reinforcing layer (4) of the coiled tubing is made of a rubber material.

6. A pre-bent coiled tubing according to claim 1, characterized in that the coiled tubing outer protective layer (5) is made of a wear resistant material.