Oil pipe centralizer

Abstract

The utility model discloses an oil pipe centralizer, and relates to the technical field of water well pipe column equipment. The oil pipe centralizer comprises a centralizing assembly and a fixing bolt; the centralizing assembly is used for being arranged on a well oil pipe in a sleeving mode, and a longitudinal cable groove for containing a cable is formed in an inner cavity of the centralizing assembly. And the fixing bolt is used for locking the centralizing assembly on the water well oil pipe. The oil pipe centralizer is used for solving the problems that in the prior art, a water well oil pipe is prone to deviating in a casing pipe, and an underground cable and a sensing line are prone to being damaged by friction with the casing pipe, effective centralizing of the water well oil pipe is achieved, and reliable protection of the underground cable and the sensing line is achieved.

Description

Technical Field

[0001] This utility model relates to the field of water well tubing equipment technology, and in particular to a tubing centralizer. Background Technology

[0002] During the exploitation of water source wells, the stability of the well tubing and the protection of downhole cables and sensor wires are crucial. Currently, in water source well operations, the tubing often shifts within the casing due to various factors, leading to tubing instability and affecting normal operations. Simultaneously, the cables and sensor wires of the downhole submersible pump are affected by vibrations and tubing tripping, easily causing friction with the casing. This friction not only damages the insulation of the cables and sensor wires, affecting signal transmission and equipment operation, but in severe cases, it can even cause cable breakage, triggering downhole accidents and increasing operating costs and maintenance difficulty.

[0003] While some existing straightening devices can straighten the tubing to some extent, their protection of cables and sensor wires is not ideal. They often lack dedicated structures to secure the cables and sensor wires, leaving them free in the well and prone to friction with the casing. Alternatively, existing protective structures may be poorly designed, inconvenient to install, and unsuitable for different well conditions and cable configurations. Summary of the Invention

[0004] The purpose of this utility model is to provide a tubing straightener to solve the problems in the prior art where water well tubing is prone to displacement inside the casing and downhole cables and sensor wires are easily damaged by friction with the casing, thereby achieving effective straightening of water well tubing and reliable protection of downhole cables and sensor wires.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a tubing centralizer, comprising a centralizer assembly and a fixing bolt; the centralizer assembly is used to be sleeved on a water well tubing, and its inner cavity is provided with a longitudinal cable groove for accommodating cables; the fixing bolt is used to lock the centralizer assembly onto the water well tubing.

[0006] Optionally, the straightening assembly is made of a malleable material and can be opened and closed to fit onto the water well tubing.

[0007] Optionally, the number and size of the cable trays are adapted to the number and size of the cables to be passed through.

[0008] Optionally, the external shape of the centralizing assembly is adapted to the inner wall shape of the water well casing to play a centralizing role between the water well tubing and the water well casing. Through this adapted shape design, the centralizer can effectively keep the water well tubing in the center position of the casing, reduce tubing deviation, and improve the stability of the tubing string.

[0009] Optionally, it also includes a positioning ring, which is used to be disposed on the water well tubing to position the centralizing assembly on the water well tubing.

[0010] Optionally, the fixing bolt is a pointed screw, and the straightening assembly is provided with a screw hole that mates with the pointed screw.

[0011] Optionally, the straightening assembly is made of nylon or rubber. Nylon or rubber materials have good wear resistance and elasticity, which can reduce their own wear when rubbing against the sleeve, and at the same time provide a certain degree of cushioning protection for the cable.

[0012] Optionally, at least two centralizers are installed on each of the water well tubing sections, located at the upper and lower parts of the tubing, respectively. Installing centralizers at the upper and lower parts of the tubing allows for better centralization of the tubing, improving the centralization effect and providing more comprehensive protection for the cable.

[0013] Compared with existing technologies, the tubing centralizer provided by this utility model achieves centralization of the water well tubing by adapting the external shape of the centralizing assembly to the inner wall of the casing, ensuring tubing string stability; the cable groove in the inner cavity accommodates and fixes the cable, preventing damage from friction between the cable and the casing; the centralizing assembly is malleable, can be pried open and fitted onto the tubing, and then locked with fixing bolts, making the installation process simple and quick, improving operational efficiency; the number and size of the cable grooves can be adapted to different cable configurations, suitable for various cable patterns; the structural design of the centralizer can adapt to different water well operating conditions; the centralizing assembly made of nylon or rubber has good wear resistance and elasticity, which can effectively reduce friction damage to the cable and itself, extending the service life of the equipment. Attached Figure Description

[0014] Figure 1 A schematic diagram of the tubing centralizer provided in an embodiment of this utility model.

[0015] Figure 2 This is a schematic diagram of the installation of the tubing centralizer provided in an embodiment of the present invention.

[0016] Reference numerals: 100-oil pipe centralizer; 1-centralizer assembly; 2-fixing bolt; 3-cable trough; 4-positioning ring; 200-oil pipe; 300-coupling; 400-cable. Detailed Implementation

[0017] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0018] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.

[0019] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. "Several" means one or more, unless otherwise explicitly specified.

[0020] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0022] Please see Figure 1 and Figure 2 The tubing straightener 100 provided in this embodiment of the utility model includes a straightening assembly 1 and a fixing bolt 2; the straightening assembly 1 is used to be sleeved on the water well tubing 200, and its inner cavity is provided with a longitudinal cable groove 3 for accommodating the cable 400; the fixing bolt 2 is used to lock the straightening assembly 1 on the water well tubing 200.

[0023] In this application, the centralizing assembly 1 is made of a malleable material, allowing it to open and close to fit onto the water well tubing 200. During installation, workers can first bend the centralizing assembly 1 to a certain angle, then slip it onto the tubing 200, and finally lock it onto the tubing 200 using the fixing bolts 2. This malleable design greatly simplifies the installation process and improves operational convenience. This malleable design makes the installation of the centralizer more convenient and quick, eliminating the need for complex pretreatment of the tubing 200 and improving operational efficiency.

[0024] In one embodiment provided in this application, the number and size of the cable troughs 3 are adapted to the number and size of the cables 400 to be passed through. This ensures that the cables 400 can pass smoothly through the cable troughs 3 and be stably fixed within the cable troughs 3, preventing the cables 400 from swaying inside the well and rubbing against the casing. For example, when a single cable 400 and a single sensor wire need to be passed through, the number and size of the cable troughs 3 will be set accordingly to suit the specifications of a single cable 400 and a single sensor wire; when three cables 400 and a single sensor wire need to be passed through, the number and size of the cable troughs 3 will also be adjusted accordingly to meet the requirements for passing through and fixing three cables 400 and a single sensor wire.

[0025] To achieve the straightening effect on the water well tubing 200, the external shape of the straightening assembly 1 is adapted to the inner wall shape of the water well casing to play a straightening role between the water well tubing 200 and the water well casing. When the straightening assembly 1 is fitted onto the tubing 200 and installed inside the casing, the outside of the straightening assembly 1 contacts the inner wall of the casing, thereby keeping the tubing 200 in the center position of the casing, thus straightening the tubing 200, reducing the deviation of the tubing 200 inside the casing, and improving the stability of the tubing string.

[0026] In one embodiment provided in this application, a positioning ring 4 is also included. The positioning ring 4 is used to be set on the water well tubing 200 to position the centralizing assembly 1 on the water well tubing 200. In the actual installation process, the operator can first fix the positioning ring 4 at a predetermined position on the tubing 200, and then put the centralizing assembly 1 on the tubing 200 and make it contact the positioning ring 4 to determine the installation position of the centralizing assembly 1. The setting of the positioning ring 4 can ensure that the installation position of the centralizing assembly 1 on the tubing 200 is accurate and prevent the centralizing assembly 1 from sliding randomly on the tubing 200, thereby ensuring the effect of centralization and cable 400 protection.

[0027] In this application, the fixing bolt 2 is a pointed screw, and the straightening assembly 1 is provided with a screw hole that mates with the pointed screw. The pointed screw design makes it easy to insert into the screw hole, which improves the reliability of fixing and the convenience of installation.

[0028] In one embodiment provided in this application, the centralizing assembly 1 is made of nylon or rubber, both of which have good wear resistance and elasticity. During well operations, the outer surface of the centralizing assembly 1 will rub against the inner wall of the casing. The wear resistance of the nylon or rubber material can reduce the wear of the centralizing assembly 1 and extend its service life; at the same time, its elasticity can play a certain buffering role during the friction process, reducing the impact on the cable 400 and further protecting the cable 400.

[0029] In this application, at least two centralizers are installed on each water well tubing 200, located at the upper and lower parts of the tubing 200 respectively. By installing centralizers at the upper and lower parts of the tubing 200, a more stable support structure can be formed, improving the centralizing effect. At the same time, the cable 400 can be fixed and protected from both the upper and lower parts, reducing the swaying of the cable 400 in the well and further reducing the possibility of friction between the cable 400 and the casing.

[0030] In specific implementation: First, it is necessary to ensure that the casing used in the water source well is of a predetermined specification, and the transmission tubing 200 is of a predetermined specification. The predetermined specifications are determined based on the actual water well conditions and operational requirements to ensure that the dimensions of the casing and tubing 200 are compatible with the centralizer of this invention. Then, the tubing 200 is connected to form a complete tubing 200 column. During the connection of the tubing 200, it is essential to ensure a secure connection that meets operational requirements. Next, the cable 400 and sensor wire are threaded through the cable groove 3 of the corresponding size within the centralizer assembly 1. During threading, attention should be paid to the arrangement of the cable 400 and sensor wire, ensuring they are neat and orderly within the cable groove 3 and avoiding tangling. Afterward, the centralizer assembly 1 is opened and fitted onto the tubing 200. During fitting, attention should be paid to the position of the centralizer assembly 1, ensuring it contacts the positioning ring 4 previously installed on the tubing 200 to determine its accurate installation position. Finally, use the fixing bolt 2 to lock the centering assembly 1 onto the oil pipe 200. When tightening the fixing bolt 2, pay attention to the force to ensure that the centering assembly 1 is firmly fixed onto the oil pipe 200, while avoiding damage to the centering assembly 1 or the oil pipe 200 due to excessive force.

[0031] Through the above specific implementation process, the tubing straightener 100 of this utility model can be installed on the water well tubing 200 to straighten the tubing 200 and protect the cable 400.

[0032] As can be seen from the structure and specific implementation process of the tubing centralizer 100 described above, the centralizer assembly 1 adapts its external shape to the inner wall of the casing to achieve centralization of the water well tubing 200, ensuring the stability of the tubing string; the cable groove 3 in the inner cavity accommodates and fixes the cable 400, preventing the cable 400 from being damaged by friction with the casing; the centralizer assembly 1 is malleable and can be pried open and fitted onto the tubing 200, and then locked with the fixing bolts 2, making the installation process simple and quick, improving work efficiency; the number and size of the cable grooves 3 can be adapted according to different cable 400 configurations, suitable for various cable 400 modes; the structural design of the centralizer can adapt to different water well working conditions; the centralizer assembly 1, made of nylon or rubber, has good wear resistance and elasticity, which can effectively reduce friction damage to the cable 400 and itself, extending the service life of the equipment.

[0033] In the description of the above embodiments, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0034] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A tubing centralizer, characterized in that, It includes a straightening assembly and a fixing bolt; the straightening assembly is used to be sleeved on the water well tubing, and its inner cavity is provided with a longitudinal cable groove for accommodating the cable; the fixing bolt is used to lock the straightening assembly on the water well tubing.

2. The tubing centralizer according to claim 1, characterized in that, The straightening assembly is made of a malleable material and can be opened and closed to fit onto the water well tubing.

3. The tubing centralizer according to claim 1, characterized in that, The number and size of the cable trays are adapted to the number and size of the cables to be passed through.

4. The tubing centralizer according to claim 1, characterized in that, The external shape of the straightening assembly is adapted to the inner wall shape of the well casing to provide a straightening effect between the well tubing and the well casing.

5. The tubing centralizer according to claim 1, characterized in that, It also includes a positioning ring, which is used to be installed on the water well tubing to position the centralizing assembly on the water well tubing.

6. The tubing centralizer according to claim 1, characterized in that, The fixing bolt is a pointed screw, and the straightening assembly is provided with a screw hole that mates with the pointed screw.

7. The tubing centralizer according to claim 1, characterized in that, The straightening assembly is made of nylon or rubber material.

8. The tubing centralizer according to any one of claims 1-7, characterized in that, At least two centralizers are installed on each of the water well tubings, located at the upper and lower parts of the tubing, respectively.

Images