Novel logging headstall structure

Abstract

The utility model relates to the technical field of oil well logging, and discloses a novel well logging headstall structure which comprises a headstall body, and a dynamic protection mechanism is arranged on the outer side of the headstall body in a sleeved mode. The dynamic protection mechanism comprises a groove ring cylinder, the groove ring cylinder is arranged on the outer side of the headstall body in a sleeving mode, and a plurality of inclined rods are annularly distributed on the outer side of the groove ring cylinder at equal intervals. According to the novel well logging headstall structure, through cooperation of the headstall body and the dynamic protection mechanism, if the inner wall changes in the protection well logging period, the pressure sensor (set to be a fixed value) senses the change of acting force and sends an instruction to the control module in the box body, and then the control module instructs the electromagnet to adjust the magnetic intensity; the repulsive force of the electromagnet to the magnetic attraction piece is controlled to be a fixed value, the headstall body is sleeved with the groove ring cylinder, the sliding strip limits the sliding groove to prevent rotation, then the two sides are sleeved with the two conical cylinders, the second bolts penetrate through the conical cylinders and are in threaded connection with the groove ring cylinder, and operation is easy.

Description

Technical Field

[0001] This utility model relates to the field of oil well logging technology, specifically a novel well logging bridle structure. Background Technology

[0002] Some logging bridles have a simple structure without protection, which causes them to sway left and right and collide with the borehole wall during logging, resulting in wear and tear. This damages vulnerable internal components of the bridle, indicating poor protection and a shortened lifespan of its internal parts.

[0003] To address the aforementioned shortcomings, a utility model patent with authorization announcement number CN219654684U provides an oil well logging bridle. This oil well logging bridle includes a bridle body with a protective mechanism on its outer side. This solves the problem that some logging bridles have a simple structure without protection, causing them to sway left and right and collide with the borehole wall during well detection, resulting in wear and damage to vulnerable internal components, poor protection, and shortened lifespan of internal components.

[0004] However, the protective mechanism in its logging bridle structure cannot adjust the outward supporting force of the limiting pulley in real time. Due to the long distance from the well wall and the inevitable changes in the inner diameter of the path, when the inner diameter increases, the limiting pulley's restraint on the bridle body becomes unstable, reducing the protective effect. When the inner diameter decreases, the movement of the bridle body is obstructed, resulting in poor protective effect and smooth construction during the movement of the bridle body. Utility Model Content

[0005] The purpose of this invention is to provide a novel logging bridle structure that can precisely control the force of the limiting pulley in real time by adding a dynamically adjustable elastic support component, ensuring stable protection and smooth movement under different well diameters, and greatly improving the efficiency and reliability of logging operations, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a novel logging bridle structure, comprising: a bridle body, on the outside of which a dynamic protective mechanism is fitted; the dynamic protective mechanism comprising: a grooved ring cylinder, which is fitted on the outside of the bridle body, wherein multiple inclined rods are equidistantly distributed in a ring on the outside of the grooved ring cylinder, a base block is hinged to the end of each inclined rod near the grooved ring cylinder, the base block is fixedly connected to the grooved ring cylinder, a limiting pulley is hinged to the end of each inclined rod away from the grooved ring cylinder, a support rod is hinged to the outer wall of each inclined rod on the side near the grooved ring cylinder, a first collar is hinged to the end of each support rod away from the inclined rod, the inner wall of the first collar is clearance-fitted with the outer wall of the grooved ring cylinder, and the first collar... A compression spring is fixed to the surface of a first ring away from the base block. A second ring is fixed to the end of the compression spring away from the first ring. The inner wall of the second ring is fitted with the outer wall of the grooved ring cylinder. A pair of crossbars are fixed to the surface of the second ring away from the compression spring. The pair of crossbars penetrate a portion of the grooved ring cylinder. A T-shaped rod is inserted into the end of the crossbar away from the second ring. A magnetic absorbing piece is fixed to the end of the T-shaped rod away from the crossbar. An electromagnet is concentrically arranged on the magnetic absorbing piece away from the T-shaped rod. A soft block is fixed to the end of the T-shaped rod away from the magnetic absorbing piece. A pressure sensor is pressed against the end face of the soft block away from the T-shaped rod. The pressure sensor is fixedly connected to the crossbar. A box is provided above the pressure sensor and the electromagnet.

[0007] Preferably, a conical cylinder is fitted on both sides of the bridle body, and a pair of first bolts are inserted into the outer side of the conical cylinder. The first bolts pass through the conical cylinder and are threadedly connected to the grooved ring cylinder. The electromagnet and the box body are both fixedly connected to the contact surface of the conical cylinder.

[0008] Preferably, a pair of sliding strips are attached to the outer wall of the bridle body, and a pair of second bolts are inserted into both ends of the front surface of the sliding strips. The second bolts pass through the sliding strips and are threadedly connected to the shell of the bridle body. A pair of sliding grooves are provided on the inner wall of the grooved ring cylinder, and the sliding grooves are slidably connected to the sliding strips for limiting.

[0009] Preferably, the end of the box body away from the conical cylinder is an open structure, and a box cover is provided on the outside of the open structure. The box cover is connected to the box body by a third bolt.

[0010] Preferably, the inner walls of both the first and second rings are slidably engaged with a plurality of balls, which are in contact with the outer wall of the grooved ring cylinder.

[0011] Preferably, a pair of the sliders are symmetrically distributed with respect to the center point of the bridle body, and the contact surfaces of the sliders and the bridle body are matched.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This novel logging bridle structure has the following advantages:

[0013] Through the cooperation of the bridle body and the dynamic protection mechanism, the bridle body and the dynamic protection mechanism work together. During logging, the compression spring is compressed, and through the transmission of the first ring and the support rod, the inclined rod rotates around the base block, so that the limiting pulley is in contact with the inner wall of the logging. Because the limiting pulley can roll, it does not significantly increase the friction force, and its contact can stabilize the bridle body in the center, avoid impact, and achieve protection.

[0014] If the inner wall changes during logging, the pressure sensor (set to a fixed value) senses the change in force and sends a command to the control module inside the box. The control module then commands the electromagnet to adjust the magnetic strength, controlling the repulsive force of the electromagnet on the magnetic accumulator to a fixed value, so that the force between the limit pulley and the inner wall is constant. This allows for real-time and precise control, ensuring stable protection and smooth movement under different well diameters, and improving construction efficiency and reliability.

[0015] During installation, before logging, the grooved ring cylinder is placed on the outside of the horse bridle body, and the sliding bar limits the sliding groove to prevent rotation. Then, two conical cylinders are placed on both sides, and the second bolt is used to pass through the conical cylinder and connect to the grooved ring cylinder threadedly. The operation is simple. Attached Figure Description

[0016] The above and other features, advantages, and aspects of the embodiments of this disclosure will become more apparent from the accompanying drawings and the following detailed description. Throughout the drawings, the same or similar reference numerals denote the same or similar elements. It should be understood that the drawings are schematic, and the originals and elements are not necessarily drawn to scale.

[0017] Figure 1 This is a schematic diagram of the structure of this utility model;

[0018] Figure 2 for Figure 1 Front view partial sectional view;

[0019] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0020] Figure 4 for Figure 2 Enlarged view of point B in the middle;

[0021] Figure 5 for Figure 4 Enlarged view of point C in the middle;

[0022] Figure 6 for Figure 1 A three-dimensional structural diagram of the central groove ring cylinder.

[0023] In the diagram: 1. Bridle body, 2. Groove ring cylinder, 3. Diagonal bar, 4. Base block, 5. Limiting pulley, 6. Support rod, 7. First collar, 8. Compression spring, 9. Second collar, 10. Crossbar, 11. T-shaped bar, 12. Magnetic plate, 13. Electromagnet, 14. Soft block, 15. Pressure sensor, 16. Box body, 17. Conical cylinder, 18. First bolt, 19. Sliding bar, 20. Second bolt, 21. Sliding groove, 22. Box cover, 23. Third bolt. Detailed Implementation

[0024] 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.

[0025] Please see Figures 1-6 This utility model provides a technical solution: a novel logging bridle structure, comprising: a bridle body 1, with a dynamic protection mechanism fitted on the outer side of the bridle body 1; the dynamic protection mechanism includes: a grooved ring cylinder 2, which is fitted on the outer side of the bridle body 1; multiple inclined rods 3 are distributed in a ring at equal intervals on the outer side of the grooved ring cylinder 2; a base block 4 is hinged to the end of the inclined rod 3 near the grooved ring cylinder 2, and the base block 4 is fixedly connected to the grooved ring cylinder 2; a limiting pulley 5 is hinged to the end of the inclined rod 3 away from the grooved ring cylinder 2; a support rod 6 is hinged to the side of the outer wall of the inclined rod 3 near the grooved ring cylinder 2; a first ring 7 is hinged to the end of the support rod 6 away from the inclined rod 3; the inner wall of the first ring 7 is clearance-fitted with the outer wall of the grooved ring cylinder 2; and a compression spring 8 is fixedly connected to the surface of the first ring 7 away from the base block 4. A second ring 9 is fixedly connected to the end of the spring 8 away from the first ring 7. The inner wall of the second ring 9 is fitted with the outer wall of the grooved ring cylinder 2. A pair of crossbars 10 are fixedly connected to the surface of the second ring 9 away from the compression spring 8. The pair of crossbars 10 penetrate a part of the grooved ring cylinder 2. A T-shaped rod 11 is inserted into the end of the crossbar 10 away from the second ring 9. A magnetic absorbing piece 12 is fixedly connected to the end of the T-shaped rod 11 away from the crossbar 10. An electromagnet 13 is concentrically provided in the direction away from the T-shaped rod 11. A soft block 14 is fixedly connected to the end of the T-shaped rod 11 away from the magnetic absorbing piece 12. A pressure sensor 15 is pressed against the end face of the soft block 14 away from the T-shaped rod 11. The pressure sensor 15 is fixedly connected to the crossbar 10. A box 16 is provided above the pressure sensor 15 and the electromagnet 13.

[0026] In the specific implementation process, it is worth noting that the bridle body 1, as the core component of the entire logging equipment, undertakes the important task of connecting the logging instrument and the downhole cable. Since it is a known structural component, its specific operating principle will not be described in detail. The inner wall of the grooved ring cylinder 2 is clearance-fitted with the outer wall of the bridle body 1. The inclined rod 3 is made of lightweight, high-strength aluminum alloy. The base block 4 is hinged to the inclined rod 3 via a pin. The limiting pulley 5 is made of wear-resistant, low-friction engineering plastic, and its surface is smoothed to reduce friction with... The friction force on the inner wall of the well is controlled by the support rod 6, which serves as a transmission component. Its length and angle are matched with the inclined rod 3 to ensure that the movement of the first ring 7 can be accurately transmitted to the inclined rod 3. The inner walls of the first ring 7 and the second ring 9 are fitted with the outer wall of the grooved ring cylinder 2 with a clearance. The size of the clearance is precisely controlled to ensure that the rings can slide smoothly on the grooved ring cylinder 2. At the same time, multiple ball bearings that slide and engage on the inner wall further reduce the sliding friction force. The compression spring 8 is made of spring steel with a high elastic coefficient, and its elastic force is precisely adjusted to ensure that the friction force on the horse bridle body 1 is sufficient. During operation, the crossbar 10 provides stable pressure. As a component connecting the second ring 9 and the T-shaped rod 11, it has sufficient strength and rigidity to ensure that it will not deform under stress. The design of the T-shaped rod 11 enables it to stably transmit the repulsive force of the electromagnet 13. The magnetic chuck 12 is made of a permanent magnet material with strong magnetism to ensure that it can generate sufficient repulsive force with the electromagnet 13. The magnetic strength of the electromagnet 13 can be precisely adjusted by the control module to meet the protection requirements under different well diameters. The soft block 14 is made of a rubber material with good elasticity. Its function is to buffer the impact force on the pressure sensor 15 and protect the pressure sensor 15 from damage. The pressure sensor 15 is a high-precision and high-sensitivity sensor that can accurately monitor the force between the limit pulley 5 and the inner wall of the well in real time. The housing 16 is made of waterproof and dustproof engineering plastic. It contains the necessary structures such as the control module and the rechargeable battery assembly. It can process the signal transmitted from the pressure sensor 15 and send control commands to the electromagnet 13.

[0027] Furthermore, both sides of the bridle body 1 are fitted with conical cylinders 17, and a pair of first bolts 18 are inserted into the outer side of the conical cylinders 17. The first bolts 18 penetrate the conical cylinders 17 and are threadedly connected to the grooved ring cylinder 2. The electromagnet 13 and the box body 16 are both fixedly connected to the contact surface of the conical cylinders 17.

[0028] In the specific implementation process, it is worth noting that the design of the conical cylinder 17 allows it to better adapt to the shape of the bridle body 1, so as to ensure that it can fit tightly with the bridle body 1 during installation. The first bolt 18 is a high-strength, corrosion-resistant stainless steel bolt, and its length and diameter have been strictly selected to ensure that it can provide sufficient connection strength. The contact surfaces of the electromagnet 13 and the box 16 with the conical cylinder 17 are fixed with screws.

[0029] Furthermore, a pair of sliding strips 19 are attached to the outer wall of the bridle body 1. A pair of second bolts 20 are inserted into both ends of the front surface of the sliding strips 19. The second bolts 20 pass through the sliding strips 19 and are threadedly connected to the shell of the bridle body 1. A pair of sliding grooves 21 are provided on the inner wall of the groove ring cylinder 2. The sliding grooves 21 are slidably connected to the sliding strips 19.

[0030] In the specific implementation process, it is worth noting that the second bolt 20 is made of the same stainless steel as the first bolt 18 to ensure that the slide bar 19 can be firmly fixed on the bridle body 1. The width and depth of the slide groove 21 are precisely designed to match the size of the slide bar 19 to ensure that the slide bar 19 can slide smoothly in the slide groove 21, while also serving as a limit to prevent the groove ring cylinder 2 from rotating relative to the bridle body 1.

[0031] Furthermore, the end of the box body 16 away from the conical cylinder 17 is an open structure, and the outer side of the open structure is covered by a box cover 22, which is connected to the box body 16 by a third bolt 23.

[0032] In the specific implementation process, it is worth noting that the open structure design of the box body 16 facilitates the inspection, maintenance and charging of necessary structures such as the internal control module and the charging battery assembly. The box cover 22 is made of the same engineering plastic as the box body 16, and its surface is sealed to prevent underground liquids and dust from entering the box body 16. The third bolt 23 is a stainless steel bolt, and its length and diameter are selected according to the connection requirements of the box cover 22 and the box body 16 to ensure that the box cover 22 can be firmly fixed to the box body 16.

[0033] Furthermore, multiple balls are slidably engaged on the inner walls of both the first ring 7 and the second ring 9, with the balls fitting against the outer wall of the grooved ring cylinder 2.

[0034] In the specific implementation process, it is worth noting that the balls are made of high-precision, high-hardness steel balls with smooth surfaces to reduce friction with the outer wall of the grooved ring cylinder 2. The balls are installed using a snap-fit ​​structure to ensure that they will not fall off during sliding and to ensure that the balls and the outer wall of the grooved ring cylinder 2 always remain in close contact.

[0035] Furthermore, a pair of sliders 19 are symmetrically distributed relative to the center point of the bridle body 1, and the contact surfaces of the sliders 19 and the bridle body 1 are matched.

[0036] In the specific implementation process, it is worth noting that the symmetrical distribution design of the slide bar 19 ensures that the grooved ring cylinder 2 is subjected to uniform force during installation, thus guaranteeing the stability of the installation. At the same time, the fitting design of the contact surface allows the slide bar 19 to better adapt to the shape of the bridle body 1, improving the installation accuracy.

[0037] Limiting and stabilizing principles during dynamic protection:

[0038] During the logging process of the bridle body 1, the dynamic protection mechanism plays a key role. The compression spring 8 is in a compressed state. Through the transmission of the first ring 7 and the support rod 6, the inclined rod 3 is driven to rotate away from the grooved ring cylinder 2 with the base block 4 as the center. This causes the limiting pulley 5 to fit against the inner wall of the logging. Since the limiting pulley 5 can roll, the friction between the bridle body 1 and the inner wall of the logging will not increase significantly when the bridle body 1 moves, ensuring smooth movement. At the same time, the multiple limiting pulleys 5 fit against the inner wall of the logging, keeping the bridle body 1, which is in the center position, stable and effectively preventing the bridle body 1 from hitting the inner wall of the logging, thus achieving the basic protection effect of the bridle body 1.

[0039] Real-time control principle when well diameter changes:

[0040] When the inner wall of the logging shaft 1 changes (inner diameter increases or decreases) during the logging process, the pressure sensor 15 plays a monitoring role. The pressure sensor 15 is set to a fixed value. When the force changes due to the change in well diameter, it sends a command to the control module inside the housing 16. After receiving the command, the control module sends a signal command to the electromagnet 13 to adjust the magnetic strength of the electromagnet 13. The change in the magnetic strength of the electromagnet 13 will change its repulsive force on the magnetic suction plate 12. By controlling this repulsive force to a fixed value in real time, the force between the limiting pulley 5 and the inner wall of the logging shaft remains constant regardless of whether the inner diameter of the logging shaft increases or decreases. This method of real-time adjustment of the force of the limiting pulley ensures that the logging shaft 1 can obtain stable protection under different well diameters, making the movement smoother, thereby greatly improving the efficiency and reliability of logging operations.

[0041] Limiting and fixing principles during installation:

[0042] Before logging through the bridle body 1, the dynamic protection mechanism needs to be installed on the bridle body 1. First, the grooved ring cylinder 2 is fitted onto the outside of the bridle body 1. At this time, the sliding strip 19 limits the sliding groove 21 to prevent the grooved ring cylinder 2 from rotating relative to the bridle body 1, ensuring the initial stability of the installation. Then, the two conical cylinders 17 are fitted onto both sides of the bridle body 1. The first bolt 18 is then used to penetrate the conical cylinders 17 and threadedly connect them to the grooved ring cylinder 2, completing the secure installation of the dynamic protection mechanism and the bridle body 1. The entire installation process is simple and convenient, achieving a reliable connection between the dynamic protection mechanism and the bridle body 1, providing a stable guarantee for subsequent logging operations.

[0043] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel logging bridle structure, comprising: The horse bridle body (1) is characterized in that: a dynamic protective mechanism is fitted on the outside of the horse bridle body (1); The dynamic protection mechanism includes: a grooved ring cylinder (2), which is fitted on the outside of the bridle body (1). Multiple diagonal rods (3) are evenly distributed in a ring on the outside of the grooved ring cylinder (2). A base block (4) is hinged to the end of each diagonal rod (3) facing the grooved ring cylinder (2). The base block (4) is fixedly connected to the grooved ring cylinder (2). A limiting pulley (5) is hinged to the end of each diagonal rod (3) away from the grooved ring cylinder (2). A support rod (6) is hinged to the side of the outer wall of each diagonal rod (3) facing the grooved ring cylinder (2). A first collar (7) is hinged to the end of the support rod (6) away from the diagonal rod (3). The inner wall of the first collar (7) is clearance-fitted with the outer wall of the grooved ring cylinder (2). A compression spring (8) is fixed to the surface of the first collar (7) away from the base block (4). A second collar (9) is fixed to the end of the compression spring (8) away from the first collar (7). The inner wall of the collar (9) is fitted with the outer wall of the grooved ring cylinder (2) with a gap. A pair of crossbars (10) are fixed to the surface of the second collar (9) away from the compression spring (8). The pair of crossbars (10) penetrate a part of the grooved ring cylinder (2). A T-shaped rod (11) is inserted into the end of the crossbar (10) away from the second collar (9). A magnetic absorbing piece (12) is fixed to the end of the T-shaped rod (11) away from the crossbar (10). An electromagnet (13) is concentrically provided in the direction of the magnetic absorbing piece (12) away from the T-shaped rod (11). A soft block (14) is fixed to the end of the T-shaped rod (11) away from the magnetic absorbing piece (12). A pressure sensor (15) is pressed against the end face of the soft block (14) away from the T-shaped rod (11). The pressure sensor (15) is fixedly connected to the crossbar (10). A box (16) is provided above the pressure sensor (15) and the electromagnet (13).

2. The novel logging bridle structure according to claim 1, characterized in that: Both sides of the bridle body (1) are fitted with conical cylinders (17). A pair of first bolts (18) are inserted into the outside of the conical cylinders (17). The first bolts (18) pass through the conical cylinders (17) and are threadedly connected to the grooved ring cylinder (2). The electromagnet (13) and the box body (16) are both fixedly connected to the contact surface of the conical cylinders (17).

3. The novel logging bridle structure according to claim 1, characterized in that: A pair of sliding strips (19) are attached to the outer wall of the bridle body (1). A pair of second bolts (20) are inserted into both ends of the front surface of the sliding strips (19). The second bolts (20) pass through the sliding strips (19) and are threadedly connected to the shell of the bridle body (1). A pair of sliding grooves (21) are provided on the inner wall of the grooved ring cylinder (2). The sliding grooves (21) are slidably connected to the sliding strips (19).

4. The novel logging bridle structure according to claim 1, characterized in that: The end of the box body (16) away from the conical cylinder (17) is an open structure, and the outside of the open structure is covered by a box cover (22), which is connected to the box body (16) by a third bolt (23).

5. The novel logging bridle structure according to claim 1, characterized in that: The inner walls of the first ring (7) and the second ring (9) are each slidably engaged with a plurality of balls, which are in contact with the outer wall of the grooved ring cylinder (2).

6. The novel logging bridle structure according to claim 3, characterized in that: A pair of sliders (19) are symmetrically distributed relative to the center point of the bridle body (1), and the sliders (19) are in contact with the bridle body (1).

Images