Cable protector

Abstract

The utility model relates to the technical field of oil extraction in oil fields, and provides a cable protector, which is used for protecting a cable positioned between an inner hole of a sleeve and an oil pipe and comprises a central pipe, the upper coupling is detachably arranged on the central pipe, and the central pipe is connected with the oil pipe through the upper coupling; the central pipe is sleeved with the protective sleeve, the protective sleeve is provided with a cable storage groove, the cable storage groove is located on the outer side of the protective sleeve, and after the protective sleeve is installed on the sleeve, the inner wall of the sleeve and the cable storage groove form a storage space used for storing cables. By means of the technical scheme, the problem that in the prior art, an oil pipe is often not centered in the descending or lifting process and is prone to swinging, so that inner diameters of a cable and a sleeve are abraded or collided, and accidents are caused is solved.

Description

Technical Field

[0001] This utility model relates to the field of oilfield production technology, specifically to a cable protector. Background Technology

[0002] In the oil extraction field, cable well cables are devices that provide power support to downhole equipment. These cables are laid by attaching to the outer wall of the tubing. Tubing sleeves further ensure the stability and safety of the tubing in the complex downhole environment. Encasing the tubing, they effectively prevent damage from well wall compression, abrasion, and corrosion, while also providing a more stable foundation for the cable attachment. In the entire oil extraction system, tubing, cable well cables, and tubing sleeves work together to ensure the smooth operation of extraction. From power supply to crude oil transportation, each link is closely connected, providing strong support for efficient and stable oil extraction and forming an indispensable and crucial component of oil extraction engineering.

[0003] However, during the use of electric pump well cables, which are attached to the outer wall of the tubing and used inside the casing, the tubing is often not centered and is prone to swinging during the lowering or raising process. This can easily cause wear or damage to the inner diameter of the cable and casing, leading to accidents.

[0004] Therefore, there is a need for an easy-to-use and low-cost cable protection tool. Utility Model Content

[0005] This utility model proposes a cable protector that solves the problem in related technologies where oil pipes are often not centered and are prone to swinging during lowering or raising, which can easily cause wear or damage to the inner diameter of the cable and sleeve, leading to accidents.

[0006] The technical solution of this utility model is as follows:

[0007] A cable protector for protecting a cable located between the inner bore of a casing and an oil pipe, comprising:

[0008] Central tube;

[0009] The upper coupling is detachably mounted on the central tube, and the central tube is connected to the oil pipe through the upper coupling.

[0010] A protective sleeve is fitted onto the central tube. The protective sleeve has a cable storage groove located on the outside of the protective sleeve. After the protective sleeve is installed on the tube, the inner wall of the tube and the cable storage groove form a storage space for storing cables.

[0011] Optionally, the protective cover includes:

[0012] The sleeve is cylindrical and is arranged coaxially with the central tube.

[0013] A plurality of baffles are arranged parallel to each other on the outer wall of the sleeve. The length direction of the baffles is parallel to the axial direction of the sleeve, and the cable storage groove is formed between two adjacent baffles.

[0014] Optionally, the end face of the sleeve away from the upper coupling has a plurality of positioning grooves, the plurality of positioning grooves being arranged at intervals, and the central tube comprising:

[0015] The positioning key is provided in a plurality of them, and the plurality of positioning keys are spaced apart on the central tube, and the positioning key engages with the positioning groove.

[0016] Optionally, the number of positioning keys is not greater than the number of positioning slots.

[0017] Optionally, the positioning key is a cylindrical rod, the positioning groove is a U-shaped groove, and the cross-sectional profile of the positioning key is adapted to the cross-sectional profile of the positioning groove.

[0018] Optionally, the central tube has a limiting portion located at the middle of the outer side of the central tube, and the limiting portion is used to block the sleeve.

[0019] Optionally, the end of the stop bar away from the sleeve abuts against the inner wall of the sleeve's inner hole.

[0020] Optionally, the opening of the positioning groove faces downwards.

[0021] Optionally, both ends of the central tube have external threads, the central tube is threaded to the upper coupling, the central tube is threaded to the end of the oil pipe through the external threads, the upper coupling has internal threads, and the upper coupling is threaded to the end of the other oil pipe through the internal threads.

[0022] The working principle and beneficial effects of this utility model are as follows:

[0023] In this utility model, the protective sleeve of the cable protector can be adjusted 360°. After the protector and the lower oil pipe are tightened, the protective sleeve of the cable protector is adjusted to make its vertical direction as consistent as possible. This will ensure that the cable enters the well in a nearly vertical and untangled manner when it is lowered. The cable protector can effectively protect the cable, reduce cable repairs, and ensure the safety of the operation. Attached Figure Description

[0024] The preferred embodiments will be described below in a clear and easy-to-understand manner, in conjunction with the accompanying drawings, to further explain the above-mentioned characteristics, technical features, advantages and implementation methods of this utility model.

[0025] Figure 1This is a schematic diagram of the overall structure of the cable protector of this utility model;

[0026] Figure 2 This is a schematic diagram showing the position and structure of the cable protector and sleeve of this utility model;

[0027] Figure 3 This is a schematic diagram of the central tube structure of this utility model;

[0028] Figure 4 This is a schematic diagram of the protective sleeve structure of this utility model.

[0029] In the diagram: 1. Upper coupling, 101. Internal threaded part, 2. Central tube, 201. Limiting part, 202. External threaded part, 3. Protective sleeve, 301. Cable storage trough, 31. Sleeve, 32. Stop bar, 302. Positioning groove, 4. Sleeve, 5. Positioning key. Detailed Implementation

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the specific implementation methods of this utility model will be described below with reference to the accompanying drawings. Obviously, the drawings described below are merely some embodiments of this utility model. For those skilled in the art, other drawings and other implementation methods can be obtained based on these drawings without any creative effort.

[0031] To keep the drawings concise, only the parts relevant to the utility model are shown schematically in each drawing; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of the components with the same structure or function is schematically shown, or only one is labeled. In this document, "a" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0032] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0033] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0034] Reference Figures 1-4As an embodiment of this utility model, a cable protector is proposed for protecting the cable located between the inner hole of the sleeve 4 and the oil pipe, including a central tube 2; an upper coupling 1 is detachably installed on the central tube 2, and the central tube 2 is connected to the oil pipe through the upper coupling 1; a protective sleeve 3 is sleeved on the central tube 2, and the protective sleeve 3 has a cable storage groove 301, which is located on the outside of the protective sleeve 3. After the protective sleeve 3 is installed on the sleeve 4, the inner wall of the sleeve 4 and the cable storage groove 301 form a storage space for storing cables.

[0035] In the above scheme, it consists of a central tube 2, an upper coupling 1 detachably connected to the central tube 2, and a protective sleeve 3 fitted onto the central tube 2. The protective sleeve 3 has a cable storage groove 301 located on its outer side. When the protective sleeve 3 is installed on the sleeve 4, the inner wall of the sleeve 4 and the cable storage groove 301 together form a space for storing cables.

[0036] Working Process: During installation, the central tube 2 is first connected to the tubing via the upper coupling 1. Then, the cable is placed in the cable storage slot 301 of the protective sleeve 3, and the protective sleeve 3 is installed in a suitable position within the casing 4, ensuring that the inner wall of the casing 4 and the cable storage slot 301 form a cable storage space. This protects the cable between the tubing and the casing 4. During tubing lowering, multiple cable protectors can be installed to ensure the cable remains vertical. This effectively prevents wear or damage to the cable against the inner diameter of the casing 4 due to tubing misalignment or swaying during tubing lowering or raising, providing a stable protective structure for the cable and ensuring the safety of electric pump well operations.

[0037] Furthermore, the protective sleeve 3 includes a sleeve 31, which is cylindrical and coaxially arranged with the central tube 2; there are several baffles 32, which are arranged parallel to each other on the outer wall of the sleeve 31, with the length direction of the baffles 32 parallel to the axial direction of the sleeve 31, and a cable storage groove 301 is formed between two adjacent baffles 32.

[0038] In the above scheme, when assembling the cable protector, the cable is placed along the cable storage groove 301 between the retaining bars 32. Due to the parallel arrangement of the retaining bars 32 and their fixing structure with the sleeve 31, the cable can maintain a relatively stable position within the storage groove. This facilitates the placement and fixing of the cable, and at the same time, it better constrains the cable position during the installation and use of the protector, further improving the protection effect of the cable and reducing the risk of cable damage.

[0039] Furthermore, the end face of the sleeve 31 away from the upper coupling 1 has a number of positioning grooves 302, which are arranged at intervals. The central tube 2 includes a number of positioning keys 5, which are arranged at intervals on the central tube 2. The positioning keys 5 are engaged with the positioning grooves 302.

[0040] In the above scheme, when adjusting the position of the cable placement groove on the protective sleeve 3, the positioning groove 302 of the protective sleeve 3 is aligned with the positioning key 5 of the central tube 2, and then the protective sleeve 3 is moved downwards so that the positioning key 5 is engaged in the positioning groove 302. This engagement method ensures that the protective sleeve 3 is fixed in position on the central tube 2, preventing rotation or displacement of the protective sleeve 3 during use, thereby ensuring the stability of the cable storage groove 301 and maintaining effective protection for the cable. The engagement structure between the positioning key 5 and the positioning groove 302 enhances the stability and reliability of the connection between the protective sleeve 3 and the central tube 2, avoiding cable protection failures that may result from loosening of the protective sleeve 3, effectively ensuring the safety of the cable in complex downhole environments, and improving the overall performance of the cable protector.

[0041] Furthermore, the number of positioning keys 5 is no greater than the number of positioning slots 302.

[0042] The above scheme increases the fault tolerance of the installation of the protective sleeve 3 and the central tube 2, reduces the probability of installation failure due to factors such as processing accuracy or installation operation, improves the assembly efficiency and success rate of the cable protector, and ensures effective protection of the cable under different working conditions.

[0043] Furthermore, the positioning key 5 is a cylindrical rod, and the positioning groove 302 is a U-shaped groove. The cross-sectional profile of the positioning key 5 is adapted to the cross-sectional profile of the positioning groove 302.

[0044] In the above scheme, when adjusting the protective sleeve 3, the cylindrical rod-shaped positioning key 5 can be smoothly inserted into the U-shaped positioning groove 302. Because the cross-sectional contours of the two are compatible, they provide good positioning and fixing effects after snapping together, effectively limiting the circumferential and axial displacement of the protective sleeve 3 on the central tube 2. After connection, it has high stability and reliability, effectively resisting various vibrations and external force interferences during downhole operations, ensuring the long-term stable operation of the cable protector, and reducing the possibility of cable damage due to displacement of the protective sleeve 3.

[0045] Furthermore, the central tube 2 has a limiting part 201, which is located at the middle of the outer side of the central tube 2. The limiting part 201 is used to block the sleeve 31. This can prevent the sleeve 31 from detaching from the central tube 2.

[0046] Furthermore, the end of the retaining strip 32 away from the sleeve 31 abuts against the inner wall of the inner hole of the sleeve 31.

[0047] In the above solution, the abutment between the baffle 32 and the inner wall of the sleeve 31 can effectively prevent the cable from slipping or shifting from the storage tank.

[0048] Furthermore, the opening of the positioning groove 302 faces downwards.

[0049] In the above scheme, the positioning groove 302 on the protective sleeve 3 opens downwards.

[0050] Working process: When installing the protective sleeve 3, since the opening of the positioning groove 302 faces downward, as the protective sleeve 3 moves downward along the central tube 2, the positioning key 5 on the central tube 2 can smoothly enter the positioning groove 302 from above, facilitating the quick and accurate locking and limiting of the protective sleeve 3.

[0051] Furthermore, both ends of the central tube 2 have external threaded portions 202. The central tube 2 is threadedly connected to the upper coupling 1. The central tube 2 is threadedly connected to the end of the oil pipe through the external threaded portion 202. The upper coupling 1 has an internal threaded portion 101. The upper coupling 1 is threadedly connected to the end of another oil pipe through the internal threaded portion 101.

[0052] In the above scheme, during the downhole tubing connection process, one end of the central tube 2 is first threaded to the end of one tubing via the external thread 202. Then, the upper coupling 1 is screwed onto the central tube 2 via the internal thread 101. Next, the end of the other tubing is connected to the upper coupling 1 via the internal thread 101, thus achieving the connection between the two tubings and the cable protector. During installation, the threaded connection ensures the tightness and stability of the connection between the components, while also facilitating installation and disassembly.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solution of this utility model without departing from the spirit and scope of the technical solution of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A cable protector for protecting a cable located between the inner hole of a sleeve (4) and an oil pipe, characterized in that, include: Central tube (2); The upper coupling (1) is detachably mounted on the central tube (2), and the central tube (2) is connected to the oil pipe through the upper coupling (1); A protective sleeve (3) is fitted onto the central tube (2). The protective sleeve (3) has a cable storage groove (301). The cable storage groove (301) is located outside the protective sleeve (3). After the protective sleeve (3) is installed on the sleeve (4), the inner wall of the sleeve (4) and the cable storage groove (301) form a storage space for storing cables. The protective sleeve (3) includes: The sleeve (31) is cylindrical and is coaxially arranged with the central tube (2); The sleeve (31) has a plurality of positioning grooves (302) on one end face away from the upper coupling (1), and the plurality of positioning grooves (302) are arranged at intervals. The central tube (2) includes: Positioning keys (5) are provided in a plurality of them, and the plurality of positioning keys (5) are spaced apart on the central tube (2), and the positioning keys (5) are engaged with the positioning groove (302); The positioning key (5) is a cylindrical rod, the positioning groove (302) is a U-shaped groove, and the cross-sectional profile of the positioning key (5) is adapted to the cross-sectional profile of the positioning groove (302). The opening of the positioning groove (302) faces downward.

2. A cable protector according to claim 1, characterized in that, The protective sleeve (3) also includes: A plurality of baffles (32) are provided, and the plurality of baffles (32) are arranged parallel to each other on the outer wall of the sleeve (31). The length direction of the baffles (32) is parallel to the axial direction of the sleeve (31), and the cable storage groove (301) is formed between two adjacent baffles (32).

3. A cable protector according to claim 1, characterized in that, The number of the positioning keys (5) is not greater than the number of the positioning slots (302).

4. A cable protector according to claim 1, characterized in that, The central tube (2) has a limiting part (201) located in the middle of the outer side of the central tube (2), and the limiting part (201) is used to block the sleeve (31).

5. A cable protector according to claim 2, characterized in that, The end of the baffle (32) away from the sleeve (31) abuts against the inner wall of the inner hole of the sleeve (31).

6. A cable protector according to claim 1, characterized in that, The central tube (2) has external threaded portions (202) at both ends. The central tube (2) is threadedly connected to the upper coupling (1). The central tube (2) is threadedly connected to the end of the oil pipe through the external threaded portion (202). The upper coupling (1) has an internal threaded portion (101). The upper coupling (1) is threadedly connected to the end of another oil pipe through the internal threaded portion (101).

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