Oil pipe anti-corrosion testing tool

Abstract

The utility model discloses an oil pipe anti-corrosion testing tool which comprises a base body and a plurality of outer testing rings made of different materials, and the two ends of the base body are connected with two oil pipes respectively. An anti-corrosion layer is arranged on the surface of the substrate; and the plurality of outer test rings are sequentially arranged outside the base body at intervals from top to bottom. According to the utility model, the plurality of outer test rings made of different materials are sequentially arranged outside the base body with the anti-corrosion performance at intervals from top to bottom, so that the corrosion rates of various materials under a single well can be simultaneously tested, and meanwhile, the oil well exploitation is not influenced.

Description

Technical Field

[0001] This utility model relates to the technical field of downhole testing tools for oil fields, and more specifically to a tubing corrosion testing tool. Background Technology

[0002] In the extraction of both heavy and light oil, all downhole tools face corrosion problems. The corrosion of materials varies depending on the well conditions and the well location (for example, wells in different areas may have higher sulfur content or higher carbon content, leading to different corrosion rates for different materials). Oil well corrosion has always been a major issue in oil extraction. It not only affects the quality and speed of oil well production and corrodes well equipment, causing malfunctions, but also impacts the safety of on-site personnel. However, current technology lacks a downhole testing tool that can test the corrosion of various materials in different well locations without affecting normal oil production.

[0003] Therefore, providing a testing tool for oil pipe corrosion is a problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0004] In view of this, the present invention provides an oil pipe corrosion testing tool that can simultaneously measure the corrosion rate of multiple materials in a single well, and can more effectively carry out corrosion prevention for each well.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] An oil pipe corrosion testing tool includes a base and multiple outer test rings of different materials. The two ends of the base are respectively connected to two oil pipes. The surface of the base is provided with an anti-corrosion layer. The multiple outer test rings are installed on the outside of the base from top to bottom at intervals.

[0007] By adopting the above technical solutions, the beneficial effects of this utility model are as follows:

[0008] Multiple test rings of different materials are installed sequentially from top to bottom on the outside of a corrosion-resistant substrate. This allows for the simultaneous measurement of the corrosion rate of multiple materials in a single well without affecting oil well production.

[0009] Furthermore, the outer diameter of the oil pipe corrosion testing tool is less than or equal to the maximum outer diameter of the oil pipe; the inner diameter of the oil pipe corrosion testing tool is greater than or equal to the inner diameter of the oil pipe.

[0010] The beneficial effect of adopting the above-mentioned further technical solution is to avoid hindering the operation of the oil pump and the up-and-down movement of the sucker rod in the tubing.

[0011] Furthermore, the substrate includes a first connector, a second connector, and a third connector connected sequentially from top to bottom; there are two outer test rings, namely a first outer test ring and a second outer test ring, the first outer test ring is sleeved on the second connector and locked between the first connector and the second connector; the second outer test ring is sleeved on the third connector and locked between the second connector and the third connector.

[0012] The beneficial effect of adopting the above-mentioned further technical solution is that the substrate and the outer test ring are set separately, which avoids the test tool breaking off due to material corrosion, thus avoiding unnecessary losses such as well repair.

[0013] Furthermore, each of the outer test rings is mounted on the outside of the substrate via a non-metallic outer support ring.

[0014] The beneficial effect of adopting the above-mentioned further technical solution is to prevent wear caused by direct contact between the substrate and the outer test ring.

[0015] Furthermore, the non-metallic outer support ring is made of nylon.

[0016] Furthermore, it also includes an inner test ring, which is installed inside the first connector.

[0017] The beneficial effect of adopting the above-mentioned further technical solution is that it can simultaneously test the corrosion inside and outside the oil pipe.

[0018] Furthermore, it also includes a non-metallic inner support ring, which is fitted inside the first connector; the inner test ring is fitted inside the non-metallic inner support ring.

[0019] The beneficial effect of adopting the above-mentioned further technical solution is to prevent wear caused by direct contact between the substrate and the inner test ring.

[0020] Furthermore, the non-metallic inner support ring is made of nylon. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0022] Figure 1 The attached figure is a structural schematic diagram of an oil pipe corrosion testing tool provided by this utility model. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] like Figure 1 As shown in the figure, this utility model discloses an oil pipe corrosion testing tool, including a base 1 and multiple outer test rings 2 made of different materials. The two ends of the base 1 are connected to two oil pipes respectively, meaning the base replaces a section of oil pipe. An anti-corrosion layer is provided on the surface of the base 1. Multiple outer test rings 2 are sequentially and spaced apart from top to bottom on the outside of the base 1. This utility model, by sequentially and spaced apart from top to bottom on the outside of a corrosion-resistant base, can simultaneously measure the corrosion rate of multiple materials in a single well without affecting oil well production.

[0025] Specifically, the outer diameter of the tubing corrosion testing tool is less than or equal to the maximum outer diameter of the tubing; the inner diameter of the tubing corrosion testing tool is greater than or equal to the inner diameter of the tubing. In this embodiment, both the outer and inner diameters of the tubing corrosion testing tool are the same as those of the tubing to avoid hindering the operation of the oil pump and the up-and-down movement of the sucker rod inside the tubing.

[0026] Specifically, the substrate 1 includes a first connector 11, a second connector 12, and a third connector 13 connected sequentially from top to bottom; all three connectors are hollow. There are two outer test rings 2: a first outer test ring 21 and a second outer test ring 22. The first outer test ring 21 is fitted onto the second connector 12 and secured between the first connector 11 and the second connector 12; the second outer test ring 22 is fitted onto the third connector 13 and secured between the second connector 12 and the third connector 13. This separate design of the substrate 1 and the outer test rings 2 avoids the possibility of test tools breaking off due to material corrosion, thus preventing unnecessary losses during well repairs.

[0027] To further optimize the technical solution of this utility model, each outer test ring 2 is installed on the outside of the base 1 through a non-metallic outer support ring 3. The inner diameter of the non-metallic outer support ring 3 is interference-fitted with the maximum outer diameter of the base 1. The outer test ring 2 is sleeved on the non-metallic outer support ring 3. The non-metallic outer support ring 3 is made of nylon to prevent wear caused by direct contact between the base 1 and the outer test ring 2.

[0028] To further optimize the technical solution of this utility model, an inner test ring 4 is also included. The inner test ring 4 is installed inside the first connector 11 and can simultaneously test the corrosion inside and outside the oil pipe. Of course, there can be multiple inner test rings 4, each made of a different material and installed inside multiple connectors.

[0029] To further optimize the technical solution of this utility model, a non-metallic inner support ring 5 is also included, which is locked inside the first connector 11; an inner test ring 4 is locked inside the non-metallic inner support ring 5. The non-metallic inner support ring 5 is made of nylon to prevent wear caused by direct contact between the substrate 1 and the inner test ring 4.

[0030] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on its differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. For the apparatus disclosed in the embodiments, since they correspond to the methods disclosed in the embodiments, the description is relatively simple; relevant parts can be referred to the method section.

[0031] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A pipeline corrosion testing tool, characterized in that, It includes a substrate and multiple outer test rings made of different materials. The two ends of the substrate are respectively connected to two oil pipes. The surface of the substrate is provided with an anti-corrosion layer. Multiple outer test rings are installed on the outside of the substrate from top to bottom at intervals.

2. The oil pipe corrosion testing tool according to claim 1, characterized in that, The outer diameter of the oil pipe corrosion testing tool is less than or equal to the maximum outer diameter of the oil pipe; the inner diameter of the oil pipe corrosion testing tool is greater than or equal to the inner diameter of the oil pipe.

3. The oil pipe corrosion testing tool according to claim 1, characterized in that, The substrate includes a first connector, a second connector, and a third connector connected sequentially from top to bottom; there are two outer test rings, namely a first outer test ring and a second outer test ring, the first outer test ring is sleeved on the second connector and is locked between the first connector and the second connector; the second outer test ring is sleeved on the third connector and is locked between the second connector and the third connector.

4. The oil pipe corrosion testing tool according to claim 1, characterized in that, Each of the outer test rings is mounted on the outside of the substrate via a non-metallic outer support ring.

5. The oil pipe corrosion testing tool according to claim 4, characterized in that, The non-metallic outer support ring is made of nylon.

6. The oil pipe corrosion testing tool according to claim 3, characterized in that, It also includes an inner test ring, which is installed inside the first connector.

7. The oil pipe corrosion testing tool according to claim 6, characterized in that, It also includes a non-metallic inner support ring, which is fitted inside the first connector; the inner test ring is fitted inside the non-metallic inner support ring.

8. The oil pipe corrosion testing tool according to claim 7, characterized in that, The non-metallic inner support ring is made of nylon.

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